FIELD OF THE INVENTION
[0001] The present invention relates to a body form-fitting duvet, which is suitable to
cover one or two persons lying in a bed in a body form-fitting manner. The invention
also relates to a duvet that does not easily drift away from the user(s) when the
user(s) moves during the night. Also provided is a duvet where the insulating properties
and warmth of one or more areas of the duvet can be varied independently to accommodate
two persons having different sleeping temperature preferences and/or to vary the insulating
properties and warmth of one or more areas of the duvet to accommodate the sleeping
temperature preferences one or two persons covered by the duvet across different seasons.
BACKGROUND OF THE INVENTION
[0002] Duvets are widely used in the Western world as substitute for blankets. Duvets are
particularly liked by people because of their light weight and warm properties, which
confer a feeling of comfort to the user. Duvets are traditionally filled with down
or feathers (also referred to as down feathers of the Eider duck), which explains
their lightweight. However, such duvets may not always be very comfortable because
they tend to cause large gaps and openings around the user, which allow cold air to
reach the user.
[0003] In order to get a better coverage of the body and prevent drifting of the duvet from
the body, the user has to tuck the duvet under his body or wrap the duvet around his
body so as to secure the duvet in place, reduce the gaps and openings around him and
shelter himself from external cold air.
[0004] This situation is not optimal since the duvet may still drift away for the user during
the night when the user moves, causing gaps and openings to form around the user again
or causing some body parts to be exposed to ambient air. This situation may be even
more unpleasant when two users are sleeping in the same bed. For instance, if one
user wraps himself/herself in the duvet, it may leave the other user without a duvet
covering his/her body during the night. Overall this situation may cause the user(s)
to be cold and/or sleep-deprived.
[0005] Another issue associated with duvets is that the duvet warmth or its degree of insulation
cannot easily be adjusted to accommodate varying preferences and needs or differing
preferences and needs in terms of sleeping temperatures of two persons sleeping under
a same duvet.
[0006] In the past, alternative duvets have been developed. One such duvet is described
in
US5,528,781. The duvet is a dome-type feather quilt or duvet having a dome-shape portion, matching
a body shape. The dome-shape portion of the duvet provides a cover surrounding the
body that minimizes the formation of gaps and openings around the body, so as to confer
a sensation of warmth and comfort to the user. This type of duvet is particularly
suitable for users with bigger bodies because the dome-shape portion accommodates
a relatively large surface. However, this type of duvet does not solve the problem
that duvets do not stay in their intended position and drift away from the user when
the user moves during the night, causing gaps. Further such duvets have uniform thermal
insulating properties.
[0007] Another duvet is disclosed in
EP0254087. The duvet is characterized in that it has a mild dome-shape like portion endowed
with a great heat retaining capacity. The dome-shape structure is achieved by filling
the portion of the duvet covering the body with more feathers, and by filling the
sides portion of the duvet with less feather. Thus, when the duvet is put on a person,
the center portion rises over the other portions because it is filled with a ticker
cushion of feathers. When the users moves, the feathers in the central portion of
the duvet do not move, thus conferring a superior insulation in the part of the duvet
covering the body. However, this type of duvet does not stay in place during the night
and drift away from the user when the user moves, causing gaps.
[0008] WO91/01101 discloses a down quilt with a body contour region.
[0010] Further, none of the duvets described above offer the ability to easily adjust the
duvet warmth or its degree of isolation to accommodate varying preferences, in terms
of sleeping temperature, of two persons sleeping under a same duvet.
OBJECT OF THE INVENTION
[0011] It is an object of the invention to provide a duvet suitable to cover one or two
persons lying in a bed, which covers the body(ies) in a body form-fitting manner.
[0012] It is an object of the invention to provide a duvet which provides a high degree
of comfort for the user(s).
[0013] It is an object of the invention to provide a duvet suitable to cover one or two
persons lying in a bed, wherein the insulating properties of the part(s) of the duvet
covering the body of one or two persons can be varied to simultaneously and differentially
accommodate the needs of two persons having different preferences for sleeping temperatures
and/or to accommodate the needs of one or two persons having different preferences
for sleeping temperatures across seasons.
[0014] It is a further object of the invention to provide a duvet suitable to cover one
or two persons lying horizontally on a bed, wherein the insulating properties of the
part(s) of the duvet covering different parts of the body can be locally varied to
accommodate the need of one or two persons having different preferences for sleeping
temperatures for particular areas of the body.
SUMMARY OF THE INVENTION
[0015] In order to achieve at least one object, the invention provides a body form-fitting
duvet (1) and one or two dome shaped spare parts (2'), the body form-fitting duvet
comprising a top layer of cloth and a bottom layer of cloth and a plurality of compartments
which are located between the top layer and the bottom layer, wherein the compartments
are defined by multiple seams connecting the top layer and the bottom layer to one
another, and wherein each compartment is filled with a filling material, the body
form-fitting duvet comprising:
- a flat part,
- one or two dome-shaped parts which have two planes of curvature, wherein each dome-shaped
part has a perimeter via which it is connected to the flat part, wherein said perimeter
comprises a head section, a foot section, a left section and a right section, and
wherein the flat part forms a flat peripheral zone surrounding the one or two dome-shaped
parts,
wherein the flat part has a greater mass per m
2 than the one or two dome-shaped parts, and
wherein the one or two dome-shaped parts are completely detachable in one piece from
the flat part via the one or two first releasable fastening means and completely replaceable
in one piece by the one or two spare dome-shaped parts which have different insulation
properties than the original one or two dome-shaped parts, by connecting said one
or two spare dome-shaped parts to the flat part via the one or two first releasable
fastening means.
[0016] The invention provides a high degree of form fit and stays in contact with the matrass
underneath the user and the body form-fitting duvet very well. The user does not feel
the extra weight, because the dome shaped part(s) are relatively light. The extra
weight is provided in the flat part only and rests directly on the mattress. Cold
air cannot easily reach the user(s) because the heavier flat part forms a seal and
prevents the cold air from reaching the user. Further, the user can easily vary the
degree of insulation of parts of the duvet, when desired, without having to purchase
or use another duvet having different insulation properties. This combination of features
into a single duvet offers a high level of versatility and comfort for the user(s).
[0017] A further advantage of the duvet as taught herein is that the spare dome shaped part,
which is to be stored when it is not in use, requires less storage space than a complete
duvet having different insulation properties.
[0018] In an embodiment, the compartments of the flat part are filled with more filling
material than the compartments of the one or two dome-shaped parts. This effectively
results in a higher weight.
[0019] In an embodiment, the flat part has a mass per m
2 which is at least 30 percent greater than the mass per m
2 of the one or two dome-shaped parts.
[0020] In an embodiment, the filling material may comprise one or more fillers selected
from the group consisting of down, feathers, polyester batting, wool, and silk. These
are the standard filling materials of duvets.
[0021] In an embodiment, all sections of the circumferential perimeter are curved, wherein
the curvature of the foot section and the head section is stronger than the curvature
of the left section and right section of the circumferential perimeter, wherein a
width of the one or two dome-shaped parts increases from the foot section towards
the head section. This provides a very good fit to a body shape.
[0022] In an embodiment, the compartments of the flat part are filled with a filling material
which is substantially heavier than feathers. Said filling material may be selected
from the group consisting of polyester batting, wool, and silk.
[0023] In an embodiment, the duvet as taught herein may further comprise one or two first
releasable fastening means via which the one or two dome-shaped parts are connected
to the flat part.
[0024] In an embodiment, each dome-shaped part is divided into an upper body dome part and
a lower body dome part and comprises a second releasable fastening means via which
the upper body dome part is connected to the lower body dome part;
and wherein the first releasable fastening means comprises:
- an upper body fastening means via which the upper body dome part is connected to the
flat part; and
- a lower body fastening means via which the lower body dome part is connected to the
flat part.
[0025] This embodiment provides a benefit in that the insulation properties can be varied
locally, which can be an advantage for users having cold feet.
[0026] The present invention further relates to an assembly of a duvet and :
- a spare upper body dome part, and
- a spare lower body dome part,
wherein the upper body dome part is completely detachable from the lower body dome
part via the second releasable fastening means and completely detachable from the
flat part via the upper body fastening means and completely replaceable by the spare
upper body dome part having different insulation properties than the original upper
body dome part by connecting said spare upper body dome part to the lower body dome
part via the second releasable fastening means and by connecting said spare upper
body dome part to the flat part via the upper body fastening means; and
wherein the lower body dome part is completely detachable from the upper body dome
part via the second releasable fastening means and completely detachable from the
flat part via the lower body fastening means and completely replaceable by the spare
lower body dome part having different insulation properties than the original lower
body dome part by connecting said spare lower body dome part to the upper body dome
part via the second releasable fastening means and by connecting said spare lower
body dome part to the flat part via the lower body fastening means.
[0027] In a preferred embodiment, the first, second, upper body and lower body releasable
fastening means are zippers.
[0028] In a further aspect, the present invention relates to the use of a duvet as taught
herein for covering one or two persons lying horizontally on a bed in a body form-fitting
manner.
[0029] In an embodiment, the use as taught herein is further characterized in that the one
or two dome-shaped parts substantially fit the body shape of one or two persons lying
horizontally on a bed, and the flat part substantially surrounds the body shape of
said persons and substantially contacts the surface of the bed in a tight manner as
a result of its greater mass (g) per m
2.
[0030] In an embodiment, the use as taught herein is further characterized in that the one
or two dome-shaped parts substantially fit the body shape of one or two persons lying
horizontally on a bed, and the flat part of the duvet remains substantially in contact
with the surface of the bed when the one or two persons move as a result of its greater
mass (g) per m
2.
[0031] In an embodiment, the duvet as taught herein may be used for varying the insulation
properties of the duvet in one or more areas of the duvet that is substantially covering
the body shape of one or two persons lying horizontally on a bed by detaching in one
piece the one or two dome-shaped parts from the flat part and by replacing in one
piece said one or two dome-shaped parts by one or two spare dome-shaped parts having
different insulating properties than the original one or two dome-shaped parts.
[0032] In a further embodiment, the duvet as taught herein may be used for varying the insulation
properties of the duvet in one or more areas of the duvet that is substantially covering
the upper body parts of one or two persons lying horizontally on a bed by detaching
the one or two upper body dome parts of the one or two dome-shaped parts from the
flat part and from the one or two lower body parts and by replacing said one or two
upper body dome parts by one or two spare upper body dome parts having different insulating
properties than the original one or two upper body dome parts.
[0033] In a further embodiment, the duvet as taught herein may be used for varying the insulation
properties of the duvet in one or more areas of the duvet that is substantially covering
the feet of one or two persons lying horizontally on a bed by detaching the one or
two lower body dome parts of the one or two dome-shaped parts from the flat part and
from the one or two upper body parts and replacing said one or two lower body dome
parts by one or two spare lower body dome parts having different insulating properties
than the original one or two lower body dome parts.
[0034] These and other aspects of the invention will be more readily appreciated as the
same becomes better understood by reference to the following detailed description
and considered in connection with the accompanying drawings in which like reference
symbols designate like parts.
BRIEF DESCRIPTION OF THE FIGURES
[0035]
Figure 1 shows a schematic top view of a duvet according to the invention.
Figures 2A and 2B show further diagrammatic top views of a duvet according to the
invention.
Figure 3 shows a 3D diagrammatic view of a dome shaped part of the duvet according
to the invention.
Figure 4 shows a diagrammatic top view of an assembly of a dome and a spare dome shaped
part according to the invention.
Figures 5A, 5B, 5C and 5D show diagrammatic top views of an assembly of a duvet having
a divided dome shaped part and a spare divided dome shaped part.
Figure 6A shows a diagrammatic sectional view of a two person duvet according to the
invention in use.
Figure 6B shows a diagrammatic view from above of a two person duvet according to
the invention.
[0036] In the present invention, all figures are intended to be representative schematic
views (i.e. not drawn to scale) of various embodiments of the invention.
DETAILED DESCRIPTION OF THE INVENTION
[0037] Turning to figure 1, a single person body form-fitting duvet 1 is shown which is
intended for a person lying horizontally on a bed in a body shape-fitting manner.
The term 'body shape-fitting manner' as used herein refers to a situation wherein
the duvet according to the invention tightly covers and surrounds the body shape or
the body contours of one or two persons lying horizontally on a bed in a manner that
substantially shelters said person(s) from the external environment and blocks cold
air from reaching said person(s) so as to provide more warmth and comfort to said
person(s). This body form-fitting quality is achieved by the combination of a flat
part 4 and a dome shaped part 2. For a two person version, two dome parts can be provided,
as will be discussed below.
[0038] As shown in figure 1, the body form-fitting duvet 1 is made of a top layer of cloth
T
1 and T
3 and a bottom layer of cloth T
2 and T
4 and comprises a plurality of compartments P
1 and P
2 which are located between said top layers T
1 and T
3 and bottom layers T
2 and T
4. The reference numerals T
1, T
2 and P
1 refer to the flat part 4 and the reference numerals T
3, T
3, P
2 refer to the dome shaped part(s) 4.
[0039] The top layers of cloth T
1 and T
3 and a bottom layers of cloth T
2 and T
4 can be made of any material suitable for the confection of a duvet. Non-limiting
examples of suitable material include cotton, polyester. In a preferred embodiment
the top layers of cloth T
1 and T
3 and the bottom layers of cloth T
2 and T
4 are made of cotton.
[0040] As shown in figure 1, the plurality of compartments P
1 and P
2 are defined by multiple seams S connecting the top layers T
1 and T
3 and the bottom layers T
2 and T
4 of the duvet 1.
[0041] The seams S may extend at right angles to the sides of the duvet, or may extend diagonally
or in another way. The seams may be straight or be curved.
[0042] When seen in top view the compartments P
1 and P
2 may be rectangular or square shaped. Obviously the dimensions (cm) of the plurality
of compartments P
1 and P
2 will vary depending on the size of the bed for which the duvet is intended for, e.g.
single bed, double bed, king-size bed, queen-size bed, and the like. The skilled person
is well-acquainted with bed size-specific measurements in relation to duvet confection.
[0043] Further, the plurality of compartments P
1 and P
2 may be filled with any filling material suitable for duvet confection. Non-limiting
examples of suitable filling material include feathers, polyester battings, wool,
silk and the like.
[0044] Turning to figures 2A and 2B, the duvet 1 comprises one or two dome-shaped parts
2, wherein each dome-shaped part has a perimeter 3 via which it is connected to a
flat part 4 of the duvet. The perimeter 3 comprises a head section H, a foot section
F, a left section L and a right section R. The foot section F is intended to cover
the feet and part of the legs of one or two persons while the head section H is intended
to cover the rest of the body parts of said one or two persons, including the shoulders,
torso and legs of said person(s) being covered by the duvet 1.
[0045] As shown in figures 2A and 2B, the one or two dome-shaped parts 2 are configured
so that all sections of the perimeter 3 are curved. The curvature of the foot section
F and the head section H is stronger than the curvature of the left section L and
right section R of the perimeter 3. The stronger curvature at the foot F and head
H sections relative to the curvature at the left section L and right section R, is
intended to give the one or two dome-shape parts 2 a shape that better matches the
body shape or body contours of one or two persons lying horizontally on a bed.
[0046] Figure 2A shows an embodiment in which the curvature of the foot section F is the
same as the curvature of the head section H, so as to give the one or two dome-shaped
parts 2 an oval shape. The width of the foot section F and the width of the head section
H are the same, and the width of the one or two dome-shaped parts 2 gradually increases
starting from both the foot section F and head section H towards the mid section of
the one or two dome-shaped parts 2.
[0047] Figure 2B shows a preferred embodiment in which the curvature of the foot section
F is stronger than the curvature of the head section H, in order to give the one or
two dome-shaped parts a more anatomical shape. The width of the one or two dome-shaped
parts 2 gradually increases from the foot section F towards the head section H. Such
construction allows for the provision of a duvet which better matches the natural
contours of the body of one or two persons lying horizontally in a bed relative to
traditional duvets by providing for larger coverage where needed, i.e. at the head
section H, including the shoulders and torso, and providing for a narrower coverage
where needed, i.e. at the foot section F, including the foot and part of the legs.
[0048] As shown in figures 1, 2A and 2B, the duvet 1 further comprises the flat part 4,
which forms a flat peripheral zone surrounding the one or two dome-shaped parts 2.
The flat part 4 has a greater mass (g) per m
2 than the one or two dome-shaped parts 2. The term 'flat part' as used herein refers
to an horizontal surface that is substantially plane when the duvet 1 covers one or
two persons lying horizontally on a bed, even when the one or two persons move during
the night.
[0049] In an embodiment, the compartments P
1 of the flat part 4 have a greater mass (g) per m
2 than the mass (g) per m
2 of the plurality of compartments P
2 of the one or two dome-shaped parts 2. The mass per m
2 of the flat part 4 may be 30 percent greater than the mass per m
2 of the dome shaped part(s) 2. In a further embodiment, the mass per m
2 of the flat part 4 may be 50 percent greater than the mass per m
2 of the dome shaped part(s) 2.
[0050] The greater mass per m
2 may be created by filling the compartments of the flat part with a filling material
which is substantially heavier than the filling material of the compartments of the
dome shaped part 2. Non-limiting examples of suitable, relatively heavy filling materials
include polyester batting, wool, silk, and the like.
[0051] In another embodiment, the compartments P
1 of the flat part 4 have a greater mass (g) per m
2 than the mass (g) per m
2 of the plurality of compartments P
2 of the one or two dome-shaped parts 2 as a result of being filled with more filling
material of a same kind. Any filling material suitable for duvet confection may be
used. Non-limiting examples of suitable filling material include feathers, polyester
batting, wool, and silk, and the like. A combination is also possible, i.e. more filling
material of a different kind.
[0052] In another embodiment, the compartments of the flat part are filled with a combination
of two different materials, a first material which is similar to the material of the
compartments of the dome shaped part and a second material which is substantially
heavier. The second material may have a sole purpose of increasing the weight, i.e.
the second material may not add anything to the thermal insulation characteristics.
[0053] The advantage of giving the flat part 4 of the duvet 1 a greater mass (g) per m
2 than the mass (g) per m
2 of the one or two dome-shaped parts 2, is that draft will be substantially avoided,
in particular when the user(s) move(s) during the night. That is because the flat
part 4 of the duvet 1, due to its greater mass (g) per m
2, will have the tendency to stay flat and in place and not let any air pass between
the flat part and the underlying mattress. In particular air channels between the
flat part and the mattress as a result of folds in the flat part are substantially
avoided.
[0054] In this way, cold air cannot reach the person(s), even when they move during the
night. Overall, this provides more comfort and warmth to the user(s). In other words,
the flat part forms a heavy sealing ring around the dome shaped part(s). because the
dome shaped part(s) is/are light, the user does not feel the extra weight.
[0055] Turning to figure 3, the one or two dome-shaped parts 2 are configured so as to have
two planes C
1 and C
2 of curvature. The domes are convex when seen from above.
[0056] Turning to figure 4, in an embodiment the duvet 1 further comprises one or two first
releasable fastening means F
1 via which the one or two dome-shaped parts 2 are connected to the flat part 4 of
the duvet 1. The term 'releasable fastening means' as used herein refers to any releasable
fastening means suitable for duvet confection. Non-limiting examples of suitable releasable
fastening means include zippers, ties, cords, button and holes, Velcro, press studs
and sockets, hooks and eyes, and the like. In an embodiment, zippers are preferred.
[0057] The releasable fastening means F
1 comprises a first cooperating part Co
1 located on the one or two dome-shaped parts 2 and a second cooperating part Co
2 located on the flat part 4. The second cooperating part Co
2 is complementary to the first cooperating part Co
1. The one or two first releasable fastening means F
1 are further configured to extend around substantially the entire perimeter 3 of the
one or two dome-shaped parts 2.
[0058] The configuration of the releasable fastening means F
1 is such that it allows a user to independently replace the one or two dome-shaped
parts 2 by one or two spare dome-shaped parts 2' having different insulating properties
than the original one or two dome-shaped parts 2. Figure 4 further shows that the
one or two dome-shaped parts 2' comprise one or two first releasable fastening means
F
1' which is configured to comprise a further first cooperating part Co
1' located on the one or two dome-shaped parts 2', wherein said second cooperating
part Co
1' is complementary to the second cooperating part Co
2 located on the flat part 4. Obviously, the one or two first releasable fastening
means F
1' is also configured to extend around substantially the entire perimeter 3 of the
one or two dome-shaped parts 2'.
[0059] This embodiment is suitable for a user having different preferences for the sleeping
temperature across seasons.
[0060] In an embodiment, the duvet 1 comprises two first releasable fastening means F
1 as taught herein which allows the two dome-shaped parts 2 to be completely detachable
in one piece from the flat part 4 via the two releasable fastening means F
1 and completely replaceable in one piece by two spare dome-shaped parts 2' having
different insulation properties than the original two dome-shaped parts 2 by connecting
said two spare dome-shaped parts 2' to the flat part 4 via the two first releasable
fastening means F
1'.
[0061] This embodiment is particularly suitable for covering 2 persons lying horizontally
on a same bed, which have different preferences for sleeping temperatures. The duvet
1 as taught herein can easily accommodate such preferences by allowing the one or
two dome-shaped parts 2 to be replaced independently and as frequently as desired.
[0062] Turning to figure 5A, the duvet 1 as taught herein may be configured so that the
one or two dome-shaped parts 2 are further divided into a upper body dome part D
1 and a lower body dome part D
2.
[0063] Figure 5B shows an embodiment wherein each dome-shaped part 2 comprises a second
releasable fastening means F
2 located on the one or two dome-shaped parts 2 between the upper body dome part D
1 and a lower body dome part D
2. The upper body dome part D
1 is connected to the lower body dome part D
2 via the second releasable fastening means. In top view, the boundary between the
upper and lower body dome part is a straight line. The second releasable fastening
means F
2 comprises a third cooperating part Co
3 located on the upper body dome part D
1 and a fourth cooperating part Co
4 located on the lower body dome part D
2 .The fourth cooperating part Co
4 is complementary to the third cooperating part Co
3. The second releasable fastening means F
2 extends along substantially the entire straight portion of the perimeter of the upper
and lower body dome parts D
1 and D
2.
[0064] Figure 5C shows an embodiment in which the upper and lower body dome part are separately
connected to the flat part. To this end, the first releasable fastening means F
1' comprises a third releasable fastening means F
3 via which the upper body dome part D
1 is connected to the flat part 4. The third releasable fastening means F
3 comprises a fifth cooperating part Co
5 located on the upper body dome part D
1 and a sixth cooperating part Co
6 located on the flat part 4. The sixth cooperating part Co
6 is complementary to the fifth cooperating part Co
5. The third fastening means F
3 extends around substantially the entire perimeter of the curved portion of the upper
body dome part D
1.
[0065] Turning to figure 5D, the first releasable fastening means F
1' further comprises a fourth releasable fastening means F
4 which connects the lower body dome part D
2 to the flat part 4. The fourth releasable fastening means F
4 comprises a seventh cooperating part C
07 located on the lower dome part D
2 and am eighth cooperating part Co
8 located on the flat part 4. The eighth cooperating part Co
8 is complementary to the seventh cooperating part Co
7. Figure 5D further shows that the fourth fastening means F
4 extends around substantially the entire perimeter of the curved portion of the lower
body dome part D
2.
[0066] The upper body dome part D
1 is completely detachable from the lower body dome part D
2 via the second releasable fastening means F
2 and is completely detachable from the flat part 4 via the third releasable fastening
means F
3. This configuration allows the upper body dome part D
1 to be completely replaceable by a spare upper body dome part D
1', as shown in figure 5C, having different insulation properties than the original
upper body dome part D
1 and comprising a further third cooperation part Co
3' and a further fifth cooperation part Co
5' located on the one or two upper body parts D
1' said further third cooperation part Co
3' and further fifth cooperation part Co
5' being complementary to the fourth cooperation part Co
4 located on the lower body part D
2 and sixth cooperation part Co
6 located in the flat part 4, respectively.
[0067] The replacement is accomplished by connecting said spare upper body dome part D
1' to the lower body dome part D
2 via the second releasable fastening means F
2 and by connecting said spare upper body dome part D
1' to the flat part 4 via the third releasable fastening means F
3.
[0068] The duvet 1 comprises a second F
2, a third F
3 and a fourth F
4 releasable fastening means, configured as described above, which further allows the
lower body dome part D
2 to be completely detachable from the upper body dome part D
1 via the second releasable fastening means F
2 and to be completely detachable from the flat part 4 via the fourth releasable fastening
means F
4. The lower body dome part D
2 is completely replaceable by a spare lower body dome part D
2', as shown in figure 5D, having different insulation properties than the original
lower body dome part D
2 and comprising a further fourth cooperation part Co
4' and a further seventh cooperation part Co
7' located on the one or two lower body parts D
2'. The replacement is achieved by connecting said spare lower body dome part D
2' to the upper body dome part D
1 via the second releasable fastening means F
2 and by connecting said spare lower body dome part D
2' to the flat part 4 via the fourth releasable fastening means F
4.
[0069] The first, second, third and fourth releasable fastening means F
1, F
2, F
3 and F
4 may be any releasable fastening means suitable for duvet convection. Non-limiting
suitable releasable fastening means include zippers, ties, cords, button and holes,
velcro, press studs and sockets, hooks and eyes, and the like. In a preferred embodiment,
first, second, third and fourth releasable fastening means F
1, F
2, F
3 and F
4 are zippers.
[0070] In a further aspect, the present invention relates to the use of a duvet 1 as taught
herein for covering one or two persons lying horizontally on a bed in a body form-fitting
manner.
[0071] Figures 6A and 6B illustrate the duvet 1 as taught herein for covering two persons
lying horizontally on a bed in a body form-fitting manner. It was observed that the
duvet 1 covers the body of one or two persons in a body form-fitting manner due to
the combination of:
- 1) the shape and curvature of the one or two dome-shaped parts 2, as described herein,
which allow to substantially fit the contours of the body (ies) of one or two persons
5 lying horizontally on a bed 6, and
- 2) the flat part 4, as described herein, which not only substantially surrounds the
contours of the body (ies) of one or two persons 5 and but also contacts the surface
of the bed 6 in a tight manner as a result of its greater mass (g).
[0072] It was further observed that the duvet 1 as taught herein may be used as an anti-drift
duvet because the flat part 4 of the duvet, as described herein, and remains substantially
in contact with the surface of the bed 6 as a result of its greater mass (g), even
when the one or two persons 5 move.
[0073] The seams S in this embodiment extend diagonally.
[0074] It will be recognized that an embodiment may not achieve all of the stated objects.
[0075] As required, detailed embodiments of the present invention are disclosed herein;
however, it is to be understood that the disclosed embodiments are merely exemplary
of the invention, which can be embodied in various forms. Therefore, specific structural
and functional details disclosed herein are not to be interpreted as limiting, but
merely as a basis for the claims and as a representative basis for teaching one skilled
in the art to variously employ the present invention in virtually any appropriately
detailed structure. Further, the terms and phrases used herein are not intended to
be limiting, but rather, to provide an understandable description of the invention.
[0076] The terms "a" or "an", as used herein, are defined as one or more than one. The term
plurality, as used herein, is defined as two or more than two. The term another, as
used herein, is defined as at least a second or more. The terms including and/or having,
as used herein, are defined as comprising (i.e., open language, not excluding other
elements or steps). Any reference signs in the claims should not be construed as limiting
the scope of the claims or the invention.
[0077] The mere fact that certain measures are recited in mutually different dependent claims
does not indicate that a combination of these measures cannot be used to advantage.
1. A body form-fitting duvet (1) and one or two dome shaped spare parts (2'), the body
form-fitting duvet (1) comprising a top layer of cloth (T
1, T
3) and a bottom layer of cloth (T
2, T
4) and a plurality of compartments (P
1, P
2), which are located between the top layer (T
1, T
3) and the bottom layer (T
2, T
4), wherein the compartments (P
1, P
2) are defined by multiple seams (S) connecting the top layer (T
1, T
3) and the bottom (T
2, T
4) layer to one another, and wherein each compartment is filled with a filling material,
the body form-fitting duvet comprising:
- a flat part (4),
- one or two dome-shaped parts (2) which have two planes (C1, C2) of curvature, wherein each dome-shaped part has a perimeter (3) via which it is
connected to the flat part (4), wherein said perimeter (3) comprises a head section
(H), a foot section (F), a left section (L) and a right section (R), and
wherein the flat part (4) forms a flat peripheral zone surrounding the one or two
dome-shaped parts (2),
wherein the flat part (4) has a greater mass (g) per m2 than the one or two dome-shaped parts (2), and
wherein the one or two dome-shaped parts (2) are completely detachable in one piece
from the flat part (4) via the one or two first releasable fastening means (F1) and completely replaceable in one piece by the one or two spare dome-shaped parts
(2') which have different insulation properties than the original one or two dome-shaped
parts (2), by connecting said one or two spare dome-shaped parts (2') to the flat
part (4) via the one or two first releasable fastening means (F1).
2. Duvet according to claim 1, wherein the flat part has a mass per m2 which is at least 30 percent greater than the mass per m2 of the one or two dome-shaped parts.
3. Duvet according to claim 1 or 2, wherein the compartments (P1) of the flat part (4) are filled with more filling material than the compartments
(P2) of the one or two dome-shaped parts (2).
4. Duvet according to any of the preceding claims, wherein the filling material in the
plurality of compartments (P1) of the flat part (4) is a different kind of filling material than the filling material
in the plurality of compartments (P2) of the one or two dome-shaped parts (2).
5. Duvet according to any of the preceding claims, wherein the compartments (P1) of the flat part (4) are filled with a filling material which is substantially heavier
than down or feathers.
6. Duvet according to claim 5, wherein said filling material is selected from the group
consisting of polyester batting, wool, and silk.
7. Duvet according to any of the preceding claims, wherein all sections of the circumferential
perimeter (3) are curved, wherein the curvature of the foot section (F) and the head
section (H) is stronger than the curvature of the left section (L) and right section
(R) of the circumferential perimeter, wherein a width of the one or two dome-shaped
parts (2) increases from the foot section (F) towards the head section (H).
8. Duvet according to any of the preceding claims, wherein each dome-shaped part (2)
is divided into an upper body dome part (D
1) and a lower body dome part (D
2) and comprises a second releasable fastening means (F
2) via which the upper body dome part (D
1) is connected to the lower body dome part (D
2);
and wherein the first releasable fastening means (F1) comprises:
- an upper body fastening means (F3) via which the upper body dome part (D1) is connected to the flat part (4); and
- a lower body fastening means (F4) via which the lower body dome part (D2) is connected to the flat part (4).
9. Duvet according to claim 8, and :
- at least one spare upper body dome part (D1'), and
- at least one spare lower body dome part (D2'),
wherein the upper body dome part (D1) is completely detachable from the lower body dome part (D2) via the second releasable fastening means (F2) and completely detachable from the flat part (4) via the upper body fastening means
(F3) and completely replaceable by the spare upper body dome part (D1') having different insulation properties than the original upper body dome part (D1) by connecting said spare upper body dome part (D1') to the lower body dome part (D2) via the second releasable fastening means (F2) and by connecting said spare upper body dome part (D1') to the flat part (4) via the upper body fastening means (F3); and
the lower body dome part (D2) is completely detachable from the upper body dome part (D1) via the second releasable fastening means (F2) and completely detachable from the flat part (4) via the lower body fastening means
(F4) and completely replaceable by the spare lower body dome part (D2') having different insulation properties than the original lower body dome part (D2) by connecting said further lower body dome part (D2') to the upper body dome part (D1) via the second releasable fastening means (F2) and by connecting said spare lower body dome part (D2') to the flat part (4) via the lower body fastening means (F4).
10. Duvet according to any of claims 8 - 9, wherein the first (F1), second (F2), upper body (F3) and lower body (F4) releasable fastening means are zippers.
11. Use of a duvet according to any of claims 1 - 10 for covering one or two persons (5)
lying horizontally on a bed (6) in a body form-fitting manner.
12. Use according to claim 11 for varying the insulation properties of the duvet in one
or more areas of the duvet that is substantially covering the body shape of one or
two persons (5) lying horizontally on a bed (6) by detaching in one piece the one
or two dome-shaped parts (2) from the flat part (4) and by replacing in one piece
said one or two dome-shaped parts (2) by one or two spare dome-shaped parts (2') having
different insulating properties than the original one or two dome-shaped parts (2).
13. Use according to claim 11 or 12 for varying the insulation properties of the duvet
in one or more areas of the duvet that is substantially covering the upper body parts
of one or two persons (5) lying horizontally on a bed by detaching the one or two
upper body dome parts (D1) of the one or two dome-shaped parts (2) from the flat part (4) and from the lower
body part (D2) and by replacing said one or two upper body dome parts (D1) by one or two further upper body dome parts (D1') having different insulating properties than the original one or two upper body
dome parts (D1).
14. Use according to any of claims 11 - 13 for varying the insulation properties of the
duvet in one or more areas of the duvet that is substantially covering the feet of
one or two persons (5) lying horizontally on a bed (6) by detaching the one or two
lower body dome parts (D2) of the one or two dome-shaped parts (2) from the flat part (4) and from the upper
body part (D1) and replacing said one or two lower body dome parts (D2) by one or two further lower body dome parts (D2') having different insulating properties than the original one or two lower body
dome parts (D2).
1. Körperformschlüssige Bettdecke (1) und ein oder zwei kuppelförmige Ersatzteile (2'),
wobei die körperformschlüssige Bettdecke (1) eine obere Lage aus Stoff (T
1, T
3) und eine untere Lage aus Stoff (T
2, T
4) und eine Vielzahl von Kompartimenten (P
1, P
2) umfasst, die zwischen der oberen Lage (T
1, T
3) und der unteren Lage (T
2, T
4) angeordnet sind, wobei die Kompartimente (P
1, P
2) durch mehrere Nähte (S) definiert sind, die die obere Lage (T
1, T
3) und die untere Lage (T
2, T
4) miteinander verbinden, und wobei jedes Kompartiment mit einem Füllmaterial gefüllt
ist, wobei die körperformschlüssige Bettdecke das Folgende umfasst:
- ein flaches Teil (4),
- ein oder zwei kuppelförmige Teile (2), die zwei Krümmungsebenen (C1, C2) aufweisen, wobei jedes kuppelförmige Teil einen Umfang (3) aufweist, über den es
mit dem flachen Teil (4) verbunden ist, wobei der Umfang (3) einen Kopfabschnitt (H),
einen Fußabschnitt (F), einen linken Abschnitt (L) und einen rechten Abschnitt (R)
umfasst, und
wobei das flache Teil (4) eine flache periphere Zone bildet, die die ein oder zwei
kuppelförmigen Teile (2) umgibt,
wobei das flache Teil (4) eine größere Masse (g) pro m
2 als die ein oder zwei kuppelförmigen Teile (2) aufweist, und
wobei die ein oder zwei kuppelförmigen Teile (2) über die ein oder zwei ersten lösbaren
Befestigungsmittel (F
1) in einem Stück von dem flachen Teil (4) vollständig abtrennbar und in einem Stück
durch die ein oder zwei kuppelförmigen Ersatzteile (2') vollständig ersetzbar sind,
die andere Isolationseigenschaften als die ursprünglichen ein oder zwei kuppelförmigen
Teile (2) aufweisen, indem die ein oder zwei kuppelförmigen Ersatzteile (2') mit dem
flachen Teil (4) über die ein oder zwei ersten lösbaren Befestigungsmittel (F
1) verbunden werden.
2. Bettdecke nach Anspruch 1, wobei das flache Teil eine Masse pro m2 aufweist, die um mindestens 30 Prozent größer als die Masse pro m2 von den ein oder zwei kuppelförmigen Teilen ist.
3. Bettdecke nach Anspruch 1 oder 2, wobei die Kompartimente (P1) von dem flachen Teil (4) mit mehr Füllmaterial als die Kompartimente (P2) von den ein oder zwei kuppelförmigen Teilen (2) gefüllt sind.
4. Bettdecke nach einem der vorhergehenden Ansprüche, wobei das Füllmaterial in der Vielzahl
von Kompartimenten (P1) von dem flachen Teil (4) eine andere Art von Füllmaterial als das Füllmaterial in
der Vielzahl von Kompartimenten (P2) von den ein oder zwei kuppelförmigen Teilen (2) ist.
5. Bettdecke nach einem der vorhergehenden Ansprüche, wobei die Kompartimente (P1) von dem flachen Teil (4) mit einem Füllmaterial gefüllt sind, das im Wesentlichen
schwerer als Daune oder Federn ist.
6. Bettdecke nach Anspruch 5, wobei das Füllmaterial aus der Gruppe ausgewählt ist, bestehend
aus Polyesterwatte, Wolle und Seide.
7. Bettdecke nach einem der vorhergehenden Ansprüche, wobei alle Abschnitte von dem umlaufenden
Umfang (3) gekrümmt sind, wobei die Krümmung von dem Fußabschnitt (F) und dem Kopfabschnitt
(H) stärker als die Krümmung von dem linken Abschnitt (L) und dem rechten Abschnitt
(R) des umlaufenden Umfangs ist, wobei eine Breite der ein oder zwei kuppelförmigen
Teile (2) vom Fußabschnitt (F) hin zum Kopfabschnitt (H) zunimmt.
8. Bettdecke nach einem der vorhergehenden Ansprüche, wobei jedes kuppelförmige Teil
(2) in einen Oberkörperkuppelteil (D
1) und einen Unterkörperkuppelteil (D
2) unterteilt ist und ein zweites lösbares Befestigungsmittel (F
2) umfasst, über das das Oberkörperkuppelteil (D
1) mit dem Unterkörperkuppelteil (D
2) verbunden ist;
und wobei das erste lösbare Befestigungsmittel (F1) das Folgende umfasst:
- ein Oberkörperbefestigungsmittel (F3), über das das Oberkörperkuppelteil (D1) mit dem flachen Teil (4) verbunden ist; und
- ein Unterkörperbefestigungsmittel (F4), über das das Unterkörperkuppelteil (D2) mit dem flachen Teil (4) verbunden ist.
9. Bettdecke nach Anspruch 8, und:
- mindestens ein Oberkörperkuppelersatzteil (D1'), und
- mindestens ein Unterkörperkuppelersatzteil (D2'),
wobei das Oberkörperkuppelteil (D
1) über das zweite lösbare Befestigungs- mittel (F
2) von dem Unterkörperkuppelteil (D
2) vollständig abtrennbar ist und über das Oberkörperbefestigungsmittel (F
3) von dem flachen Teil (4) vollständig abtrennbar ist und durch das Oberkörperkuppelersatzteil
(D
1') vollständig ersetzbar ist, welches andere Isolationseigenschaften als das ursprüngliche
Oberkörperkuppelteil (D
1) aufweist, indem das Oberkörper- kuppelersatzteil (D
1') mit dem Unterkörperkuppelteil (D2) über das zweite lösbare Befestigungsmittel (F
2) verbunden wird und indem das Oberkörper- kuppelersatzteil (D
1') über das Oberkörperbefestigungsmittel (F
3) mit dem flachen Teil (4) verbunden wird; und
wobei das Unterkörperkuppelteil (D
2) über das zweite lösbare Befestigungsmittel (F
2) von dem Oberkörperkuppelteil (D
1) vollständig abtrennbar ist und über das Unterkörperbefestigungsmittel (F
4) von dem flachen Teil (4) vollständig abtrennbar ist und durch das Unterkörperkuppelersatzteil
(D
2') vollständig ersetzbar ist, welches andere Isolations - eigenschaften als das ursprüngliche
Unterkörperkuppelteil (D
2) aufweist, indem das weitere Unterkörperkuppelteil (D
2') mit dem Oberkörperkuppelteil (D
1) über das zweite lösbare Befestigungsmittel (F
2) verbunden wird und indem das Unterkörperkuppelersatzteil (D
2') über das Unterkörper- befestigungsmittel (F
4) mit dem flachen Teil (4) verbunden wird.
10. Bettdecke nach einem der Ansprüche 1 - 9, wobei das erste lösbare Befestigungsmittel
(F1), das zweite lösbare Befestigungsmittel (F2), das lösbare Oberkörperbefestigungsmittel (F3) und das lösbare Unterkörperbefestigungsmittel (F4) Reißverschlüsse sind.
11. Verwendung nach einem der Ansprüche 1 - 10 zum Bedecken von ein oder zwei Personen
(5), die horizontal auf einem Bett (6) liegen, auf eine körperformschlüssige Weise.
12. Verwendung nach Anspruch 11 zum Variieren der Isolationseigenschaften von der Bettdecke
in ein oder mehreren Bereichen der Bettdecke, das heißt, die im Wesentlichen die Körperform
der ein oder zwei Personen (5), die horizontal auf einem Bett (6) liegen, abdecken,
indem die ein oder zwei kuppelförmigen Teile (2) von dem flachen Teil (4) in einem
Stück abgetrennt werden und die ein oder zwei kuppelförmigen Teile (2) durch ein oder
zwei kuppelförmige Ersatzteile (2') ersetzt werden, die andere Isolationseigenschaften
als die ursprünglichen ein oder zwei kuppelförmigen Teile (2) aufweisen.
13. Verwendung nach Anspruch 11 oder 12 zum Variieren der Isolationseigenschaften von
der Bettdecke in ein oder mehreren Bereichen der Bettdecke, das heißt, die im Wesentlichen
die Oberkörperteile der ein oder zwei Personen (5), die horizontal auf einem Bett
liegen, abdecken, indem die ein oder zwei Oberkörperkuppelteile (D1) von den ein oder zwei kuppelförmigen Teilen (2) von dem flachen Teil (4) und von
dem Unterkörperteil (D2) abgetrennt werden und die ein oder zwei Oberkörperkuppelteile (D1) durch ein oder zwei weitere Oberkörperkuppelteile (D1') ersetzt werden, die andere Isolationseigenschaften als die ursprünglichen ein oder
zwei Oberkörperkuppelteile (D1) aufweisen.
14. Verwendung nach einem der Ansprüche 11 - 13 zum Variieren der Isolationseigenschaften
von der Bettdecke in ein oder mehreren Bereichen der Bettdecke, das heißt, die im
Wesentlichen die Füße der ein oder zwei Personen (5), die horizontal auf einem Bett
liegen, abdecken, indem die ein oder zwei Unterkörperkuppelteile (D2) von den ein oder zwei kuppel- förmigen Teilen (2) von dem flachen Teil (4) und von
dem Oberkörperteil (D1) abgetrennt werden und die ein oder zwei Unterkörperkuppelteile (D2) durch ein oder zwei weitere Unterkörperkuppelteile (D2') ersetzt werden, die andere Isolationseigenschaften als die ursprünglichen ein oder
zwei Unterkörperkuppelteile (D2) aufweisen.
1. Couette (1) épousant la forme du corps et une ou deux parties de rechange en forme
de dôme (2'), la couette (1) épousant la forme du corps comprenant une couche supérieure
de tissu (T
1, T
3) et une couche inférieure de tissu (T
2, T
4) et une pluralité de compartiments (P
1, P
2), qui sont situés entre la couche supérieure (T
1, T
3) et la couche inférieure (T
2, T
4) , dans laquelle les compartiments (P
1, P
2) sont définis par des coutures multiples (S) reliant la couche supérieure (T
1, T
3) et la couche inférieure (T
2, T
4) l'une à l'autre, et dans laquelle chaque compartiment est rempli d'un matériau de
remplissage, la couette épousant la forme du corps comprenant:
- une partie plate (4),
- une ou deux parties en forme de dôme (2) qui ont deux plans (C1, C2) de courbure, dans laquelle chaque partie en forme de dôme a un périmètre (3) par
lequel elle est reliée à la partie plate (4), dans laquelle ledit périmètre (3) comprend
une section de tête (H), une section de pied (F), une section gauche (L) et une section
droite (R), et
dans laquelle la partie plate (4) forme une zone périphérique plate entourant la ou
les deux parties en forme de dôme (2),
dans laquelle la partie plate (4) a une masse (g) par m
2 plus grande que la ou les deux parties en forme de dôme (2), et
dans laquelle la ou les deux parties en forme de dôme (2) sont complètement détachables
en une seule pièce de la partie plane (4) par un ou deux premiers moyens de fixation
amovibles (F
1) et complètement remplaçables en une seule pièce par la ou les deux parties de rechange
en forme de dôme (2') qui ont des propriétés d'isolation différentes de celles de
la ou des deux parties en forme de dôme (2) originales, en reliant ladite ou lesdites
deux parties de rechange en forme de dôme (2') à la partie plate (4) via le premier
ou les deux premiers moyens de fixation amovibles (F
1).
2. Couette selon la revendication 1, dans laquelle la partie plate a une masse par m2 qui est supérieure d'au moins 30% à la masse par m2 de la ou des deux des parties en forme de dôme.
3. Couette selon la revendication 1 ou la revendication 2, dans laquelle les compartiments
(P1) de la partie plane (4) sont remplis de plus de matériau de remplissage que les compartiments
(P2) de la ou des deux parties en forme de dôme (2).
4. Couette selon l'une quelconque des revendications précédentes, dans laquelle le matériau
de remplissage dans la pluralité de compartiments (P1) de la partie plate (4) est un type différent de matériau de remplissage que le matériau
de remplissage dans la pluralité de compartiments (P2) de la ou des deux parties en forme de dôme (2).
5. Couette selon l'une quelconque des revendications précédentes, dans laquelle les compartiments
(P1) de la partie plate (4) sont remplis d'un matériau de remplissage qui est sensiblement
plus lourd que du duvet ou des plumes.
6. Couette selon la revendication 5, dans laquelle ledit matériau de remplissage est
choisi dans le groupe constitué d'ouate de polyester, de laine et de soie.
7. Couette selon l'une quelconque des revendications précédentes, dans laquelle toutes
les sections du périmètre circonférentiel (3) sont incurvées, dans laquelle la courbure
de la section de pied (F) et de la section de tête (H) est plus forte que la courbure
de la section gauche (L) et de la section droite (R) du périmètre circonférentiel,
dans laquelle une largeur de la ou des deux parties en forme de dôme (2) augmente
de la section de pied (F) vers la section de tête (H).
8. Couette selon l'une quelconque des revendications précédentes, dans laquelle chaque
partie en forme de dôme (2) est divisée en une partie de dôme de haut du corps (D
1) et une partie de dôme de bas du corps (D
2) et comprend un second moyen de fixation amovible (F
2) par laquelle la partie de dôme de haut du corps (D
1) est reliée à la partie de dôme de bas du corps (D
2); et dans laquelle le premier moyen de fixation amovible (F
1) comprend:
- un moyen de fixation de haut du corps (F3) par lequel la partie de dôme de haut du corps (D1) est reliée à la partie plate (4); et
- un moyen de fixation de bas du corps (F4) par lequel la partie de dôme de bas du corps (D2) est reliée à la partie plate (4).
9. Couette selon la revendication 8, et:
- au moins une partie de dôme de haut du corps de rechange (D1') et
- au moins une partie de dôme de bas du corps de rechange (D2'),
dans laquelle la partie de dôme de haut du corps (D
1) est complètement détachable de la partie de dôme de bas du corps (D
2) par les seconds moyens de fixation amovibles (F
2) et complètement détachable de la partie plate (4) par les moyens de fixation de
haut du corps (F
3) et entièrement remplaçable par la partie de dôme de haut du corps de rechange (D
1') ayant des propriétés d'isolation différentes de la partie de dôme de haut du corps
(D
1) originale en reliant ladite partie de dôme de haut du corps de rechange (D
1') à la partie de dôme de bas du corps (D
2) par les seconds moyens de fixation amovibles (F
2) et en reliant ladite partie de dôme de haut du corps de rechange (D
1') à la partie plate (4) par l'intermédiaire des moyens de fixation de haut du corps
(F
3); et
la partie de dôme de bas du corps (D
2) est complètement détachable de la partie de dôme de haut du corps (D
1) par les seconds moyens de fixation amovibles (F
2) et complètement détachable de la partie plate (4) par les moyens de fixation de
bas du corps (F
4) et complètement remplaçable par la partie de dôme de bas du corps de rechange (D
2') ayant des propriétés d'isolation différentes de la partie de dôme de bas du corps
originale (D
2) en reliant de plus ladite partie de dôme de bas du corps (D
2') à la partie de dôme de haut du corps (D
1) par les seconds moyens de fixation amovibles (F
2) et en reliant ladite partie de dôme de bas du corps de rechange (D
2') à la partie plate (4) par les moyens de fixation de bas du corps (F
4).
10. Couette selon l'une quelconque des revendications 8 à 9, dans laquelle les premiers
(F1) et les seconds (F2) moyens de fermetures amovibles et les moyens de fermetures amovibles de haut du
corps (F3) et de bas du corps (F4) sont des fermetures à glissière.
11. Utilisation d'une couette selon l'une quelconque des revendications 1 à 10 pour recouvrir
une ou deux personnes (5) allongées horizontalement sur un lit (6) d'une manière qui
épouse la forme du corps.
12. Utilisation selon la revendications 11 pour modifier les propriétés d'isolation de
la couette dans une ou plusieurs zones de la couette qui couvre sensiblement la forme
du corps d'une ou deux personnes (5) reposant horizontalement sur un lit (6) en détachant
en une pièce les une ou deux parties en forme de dôme (2) de la partie plate (4) et
en remplaçant en une pièce lesdites une ou deux parties en forme de dôme (2) par une
ou deux parties en forme de dôme de rechange (2') ayant des propriétés d'isolation
différentes de la ou des deux parties en forme de dôme (2) originales.
13. Utilisation selon la revendication 11 ou la revendication 12 pour faire varier les
propriétés d'isolation de la couette dans une ou plusieurs zones de la couette recouvrant
sensiblement les parties de haut du corps d'une ou deux personnes (5) reposant horizontalement
sur un lit en détachant la ou les deux parties de dôme de haut du corps (D1) de la ou des deux parties en forme de dôme (2) de la partie plate (4) et de la partie
de bas du corps (D2) et en remplaçant ladite ou lesdites deux parties de dôme de haut du corps (D1) par une ou deux autres parties de dôme de haut du corps (D1') ayant des propriétés d'isolation différentes de celles de la ou des deux parties
de dôme de haut du corps (D1) originales.
14. Utilisation selon l'une quelconque des revendications 11 à 13 pour faire varier les
propriétés d'isolation de la couette dans une ou plusieurs zones de la couette recouvrant
sensiblement les pieds d'une ou deux personnes (5) reposant horizontalement sur un
lit (6) en détachant la ou les deux parties de dôme de bas du corps (D2) de la ou des deux parties en forme de dôme (2) de la partie plate (4) et de la partie
de haut du corps (D1) et en remplaçant ladite une ou lesdites deux parties de dôme de bas du corps (D2) par une ou deux autres parties de dôme de bas du corps (D2') ayant des propriétés d'isolation différentes de celles de la ou des deux parties
de dôme de bas du corps (D2) originales.