[0001] The present invention relates to a dispenser of viscous products, such as toothpaste
products, cosmetic creams, food juices, and the like, in which a container is squeezed
to deliver the product out and then released.
[0002] More particularly, the invention relates to a dispenser of viscous products which
comprises an outer container, extending along a longitudinal axis which would generally
lie vertical, with at least one elastically deformable side wall, a closed bottom,
and a top provided with an opening defined by a rim, a flexible bag placed inside
said outer container, said bag having a mouth and being intended for containing the
viscous product, a plate-like element positioned across the opening in the container
top and being connected to the rim of the latter, said plate-like element being provided
with an axial passageway, parallel to the longitudinal axis of the outer container,
having a collar projected inwardly of said outer container, said bag having its mouth
sealed around said collar, a head provided in its inner side with a viscous product
delivery conduit which has one end provided with a delivery orifice and an opposite
end provided with an inlet orifice in communication with the axial passageway through
said plate-like element, said head including connecting means for being connected
to the rim of the opening in the top of said outer container, a first one-way valve
means placed in said viscous product delivery conduit and opening in the direction
toward said delivery orifice, and a second one-way valve means opening in the direction
toward the inner side of the outer container. A dispenser having the features as defined
in the preamble of claim 1 is disclosed in WO-A-86/01489.
[0003] Dispensers of the type mentioned above, are also shown and described, for example,
in US-A-4,469,250; 4,909,416; and 4,842,165.
[0004] According to the disclosure of US-A-4,469,250 and 4,909,416, the flexible bag intended
for containing a viscous product to be dispensed out is only firmly secured at the
location of the open mouth of the container with elastically deformable walls by means
of a holding element disposed across the mouth and being fixed to the container.
[0005] This arrangement has a drawback in that, not even after repeatedly squeezing and
releasing the elastic walls of the outer container, does it allow the bag to be emptied
completely and, therefore, the full amount of product charged into the bag to be used.
[0006] According to the prior art disclosed by US-A-4,842,165, the bag of viscous product
is instead secured directly on the outer container, both at the location of its mouth
and of a peripheral region halfway the height of the container.
[0007] With such a construction, the bag emptying is falicitated and full amount of viscous
product contained therein can be used.
[0008] However, the bag connection to the middle region of the inner wall of the outer container,
as well as at the location of its mouth, involves manufacturing technologies which
are quite complicated, adversely affect the dispenser manufacturing cost, and disallows
any filling of the bag with the product to be dispensed, and subsequent handling thereof,
while separate from the container.
[0009] In addition, the continuous seal of the bag to the middle region of the outer container
requires that the valve means for admitting air to the container inside, as should
occur at the end of each compressive action on the container, be positioned in the
container bottom or, at least in an area underlying the seal region in order to be
active onto the free portion of the flexible bag.
[0010] This position requirement for the air-admitting valve means restricts the feasibility
of the outer container in one piece, and further increases the dispenser cost.
[0011] It is the object of this invention to obviate the drawbacks of the above-mentioned
prior art dispensers, and ensure complete emptying of the flexible bag without involving
peripheral attachment of the bag to the middle region of the outer container.
[0012] A further object is to avoid the need to have the air-admitting valve means located
on the walls of the outer container, and this for the benefit of the dispenser manufacturing
economy and of the bag filling procedure, which can be now carried out even without
the presence of the outer container.
[0013] These objects are achieved by a dispenser according to the appended claims.
[0014] The invention will be now described in greater detail with reference to two preferred
embodiments thereof, given by way of illustration and not of limitation and shown
in the accompanying drawings, wherein:
Figure 1 shows in longitudinal section a first embodiment of this dispenser;
Figure 2 is a longitudinal section view of the embodiment shown in Figure 1, but taken
in a perpendicular plane to that of Figure 1;
Figure 3 is a sectional view taken along the line III-III in Figure 2;
Figure 4 is a sectional view taken along the line IV-IV in Figure 1;
Figure 5 is a fragmentary sectional view, drawn to an anlarged scale and taken along
the line V-V in Figure 4;
Figure 6 is a longitudinal section view similar to that in Figure 1, but showing the
dispenser head removed from the outer container;
Figure 7 shows a second embodiment of this dispenser with the head in the open condition
for pulling out the bag; and
Figure 8 is a perspective view of an opener having elastically divergent legs;
Figure 9 is a perspective view of an opener to according a modified embodiment.
Figure 10 is a perspective view showing the assembling step of an opener according
to Figure 9 into the outer container.
[0015] With reference to the above-listed drawing figures, shown at 1 is an outer container
made of plastics material, e.g. of the polyolefinic type.
[0016] It is substantially elliptical in plan view and has a closed bottom 2, serving as
a rest base, and a top 3 formed with an opening 4 defined by the edge 5.
[0017] The container 1 extends along a longitudinal axis X-X, generally arranged to lie
upright, and has at least one of its walls, 6 and 7, with a greater radius of curvature
made deformable elastically under a pressure force from outside, e.g. finger pressure
from the fingers of one user's hand.
[0018] Provided across the opening 4 is a plate-like element 8, also made of a plastics
material, which is connected with its peripheral edge 9 to the edge 5 defining the
opening 4.
[0019] This plate-like element 8 is formed with a passageway 10, coaxial with the axis X-X,
around which a collar 11 is provided.
[0020] Said collar 11 is made in one piece with the element 8 and extends inwardly of the
container 1.
[0021] Connected to the outer surface of the collar 11, as by welding, is the mouth 12 of
a flexible bag 13 intended to contain a product, such a toothpaste, to be dispensed.
The bag 13 is generally formed from a laminated film whose inner layer comprises a
heat-sealable material which is compatible with that of the collar 11.
[0022] The circumference of the bag 13, in the fully extended condition when filled with
the viscous product to be dispensed is such that an interspace 14 is formed between
the bag and the wall of the outer container 1.
[0023] Also connected to the plate-like element 8 is a support 15 which, in the embodiments
shown, is in the form of an annular element coaxial with the collar 11 and secured
on the interior of the latter. From the support 15 there extend, inwardly of the bag
13, opposite leg pairs 16, 17 and 16a, 17a, which are elastically divergent and have
ends 18, 19 and 18a, 19a arranged to push, as a retractor on the bag 13 toward the
outer container 1, thereby keeping the bag under a tension force, directed from the
inside out, even as the bag, due to the product dispensing action, gradually empties
itself and its bottom portion is folded up toward the mouth 12, as shown by the dash
line in Figure 2.
[0024] The spreading tension from the legs 16, 17 and 16a, 17a is applied to the bag 13
in a peripheral region located substantially halfway of the container 1 length along
a substantially perpendicular direction to the axis X-X.
[0025] The ends 18, 19 and 18a, 19a of the legs 16, 17 and 16a, 17a, which may be conveniently
formed from a polyolefinic or polyamidic plastics material, are shaped as arcuate
segments having a radius of curvature which corresponds to that of the respective
confronting walls of the container 1, and extend in height over a predetermined distance
parallel to the axis X-X.
[0026] Between the leg pairs 16, 17, 16a, 17a and their respective ends 18, 19, 18a and
19a, there are formed slots 20 sized to allow the elastic movement of the legs on
the container 1 being squeezed and released, while preventing, however, the bag 13
from getting in between and forming pockets of non-dispensable product.
[0027] Located on this same plate-like element 8, as particularly shown in Figures 4 and
5, is a one-way valve means for admitting external air to the container 1 interior
following the suction effect created by the elastic recovery of the container 1 walls
at the end of a product dispensing action.
[0028] This valve means comprises a hollow seat 21 defined by a frusto-conical side wall
22 and a top wall 23, with the taper pointing away from the container 1 and the cavity
open into the inner side of the container. The frusto-conical side wall 22 is provided
with a plurality of openings 24.
[0029] Located inside the seat 21 is a bell-shaped element 25, made of an elastomeric material
and being, therefore, elastically flexible, which is connected to the top wall 23
by a peduncle 26. This bell-shaped element 25 will cling elastically against the openings
24 and hold them normally closed, especially when a pressure is exerted on the walls
6 and 7 of the container 1.
[0030] On said walls being released at the end of a dispensing operation, external air is
allowed to enter through the openings 24 in consequence of the elastic deformation
undergone by the bell-shaped element 25 inwardly of the seat 21, and each the interspace
14 between the flexible bag 13 and the outer container 1.
[0031] Due to the absence of intervening obstructions, the air can also flow beneath the
bag 13 past the position of the ends 18, 19 and 18a, 19a of the opener legs and gradually
cause the bag to overturn until emptied completely.
[0032] With specific reference to Figure 6, it may be noted that the dispenser of this invention
includes a head, generally indicated by numeral reference 27. This head has, on its
inner side, a delivery conduit 28 provided with a delivery orifice 29 at its end 30,
and an inlet orifice 31 at its opposite end 32. The inlet orifice 31 is into communication
with that axial passageway 10 of the plate-like element 8 by means of a front connection
of the edge of the end 32 with an annular groove 33 formed on the element 8 around
the axial passageway 10. The profiles of the cross-section of the groove 33 and of
the edge of the end 32 mate with each other interlocked relationship.
[0033] A plurality of holes 8a is provided in the bottom of annular groove 33.
[0034] Said holes 8a, which can be seen in Figure 2, go across the thickness of the plate-like
element 8 and open into the interspace 14.
[0035] At the location of the inlet orifice 31, the delivery conduit 28 is provided with
a one-way valve means which opens in the direction toward the delivery orifice 29.
This valve means comprises a cap 34 made from polypropylene, for example, which can
be displaced angularly (see Figure 2) about a point 35 of attachment to a ring 36
which bears sealingly on an annulus 36a against which said cap 34 abuts in the sealing
position.
[0036] The hinge-like point 35 of attachment is sized to hold, in its rest condition, the
cap 34 in the closed position.
[0037] The head 27 is further provided with connecting means for connection to the open
top 3 of the container 1. This means comprises a ring-like rib 37 formed around the
edge 38 of the head and a counter-rib 39 formed on the edge 5 of the aperture 4 of
the container 1.
[0038] Lastly, the head 27 includes a thread-down cap 40 with a tamper-proof band 41, for
closing the delivery orifice 29.
[0039] With reference now to the embodiment shown in Figure 7, the rib 37 for connection
of the head 27 to the container 1 is shown formed on a ring-like band 42 which is
connected axially to the head 27 by a self-hinge flexible bridge 43 and interlockingly
matched profiles 44 and 45 formed along the confronting edges of the head 27 and the
band 42, respectively, in regions extending laterally of the bridge 43.
[0040] In the same embodiment as shown in Figure 7, the plate-like element 8 is provided
with a grip ring 46, concentrical with the axial passageway 10, which is substantially
co-planar with the plate-like element 8, in the rest position, and is connected to
the latter by a self-hinge flexible bridge 47.
[0041] The grip ring 46 can be raised by angular displacement about the bridge 47, as shown
in Figure 7, and used to pull out of the container 1 the structural assembly formed
by the plate-like element 8 and the flexible bag 13 when the latter has been emptied
completely, and replace it with another assembly with a full bag 13.
[0042] The embodiment just described enables repeated use of the container 1 and its head
27 by replacing emptied bags 13 with full bags in a refill-like fashion.
[0043] It will be appreciated from the foregoing description that, with this invention,
the flexible bag 13 requires no direct connection to the interior walls of the outer
container 1, either at the mouth or any intermediate peripheral region thereof.
[0044] The bag 13, being held under constant tension by the ends 18, 19 and 18a, 19a of
the opener legs placed inside it, enables exhaustive delivery of the product contained
therein. In addition, by virtue of its connection to the collar 11 of the plate-like
element in a detachable fashion from the container 1 together with the internal opener
leg pairs 16, 17 and 16a, 17a, the bag 13 can be filled, where required, separately
from the container 1, thereby to provide a separate refill item and affording all
the advantages mentioned hereinabove.
[0045] With reference to Figure 9, which discloses a different embodiment of the opener
of Figure 8, the leg pair 16 and 17 is replaced by a pair of smaller legs 160 and
170 which are connected to each other by a flexible strip-like annular element 171,
at their farthest position from the support 150. Said annular element 171 is flat
and substantially thick as the legs 160 and 171. Its outline, when inserted in the
bag 13 and not pressed, is such to mate the outline of the inner side of the container
1 whereas its axial extension or wedth is symmetrically decreasing from the location
of the legs 160 and 170 to the opposite locations 172 and 173.
[0046] The axial width at said opposite locations 172 and 173 is such to allow the annular
element 171 to pass through the opening 4 of the container by means of a tilting movement
during the assembling steps of the dispenser, as shown in Figure 10.
[0047] The operation of a dispenser according to the invention can be appreciated from the
foregoing description: after removing the protective cap 40 and while holding the
outer container 1 in one hand, by application of a pressure force to the resilient
walls 6 and 7 one will cause the bag 13 and the elastic opener leg pair 16 and 17
or 160 and 170 to become compressed.
[0048] As a result, a selected amount of the viscous product can be urged out past the one-way
valve 34 which opens toward the delivery orifice 29.
[0049] On relieving the walls 6 and 7 of the container 1 of the compressive force, and as
such walls spring back to their normal positions, the opener leg pair 16 and 17 or
160 and 170 will develop a lateral thrust force inside the bag 13 and again stretch
it to its maximum diameter as allowed by the transverse dimensions of the bag 13 before
it contacts the inside surfaces of the walls 6 and 7 of the container 1.
[0050] Concurrently therewith, as the cap 34 is closed against the abutment ring 36, the
bell-shaped element 25 will deform elastically toward the hollow seat 21 and allow
the air present in the cavity 27a of the head 27, which is not sealed off around its
outer edge, to flow from the outside into the container 1 and the lower areas of the
bag 13 through the interspace 14.
[0051] The dispenser of this invention is assembled by first connecting the support 15 for
the opener legs to the plate-like element 8, specifically by attaching it to the inner
wall of the collar 11.
[0052] At this stage, using a holding tool, not shown, passed through the axial passageway
10, in the case of the embodiment of Figure 8, the elastic legs 16, 17 and 16a, 17a
are engaged with the tool and held gathered together in a converging condition. Specially
useful to this aim is the recess 48 provided in the interconnection region of the
ends 18, 19 and 18a, 19a to the respective legs 16, 17 and 16a, 17a.
[0053] The assembly including the plate-like element 8 and the opener legs 16, 17 and 16a,
17a held gathered by the tool is brought toward the bag 13, and the legs, while still
held in the tool, are inserted through the mouth 12 until the latter locates around
the outer surface of the collar 11.
[0054] The mouth 12 of the bag is now welded to the collar 11 using conventional welding
equipment.
[0055] On completion of the welding step, the assembly is inserted into the container 1
and the plate-like element 8 is air-tight fixed with its edge 9 to the edge 5 of the
container 1.
[0056] This seal may be enhanced by a wall section 9a fitting as a stopper inside the mouth
4 of the container 1.
[0057] At that point, the opener legs 16, 17 and 16a, 17a are released from the holding
tool and the tool is taken out axially through the passageway 10, thereby the opener
legs will spring to their bag 13 stretching positions.
[0058] This is followed by the filling step of fitting the head 27.
[0059] During the filling step, the holes 8a, provided in the bottom of the groove 33, allow
the exit of the air from the interspace 14, whereas when the head 27 is fitted on
the container 1, they become air-tight closed by the end 32 of the delivery conduit
28 which is inserted into the groove 33.
1. A dispenser of viscous products which comprises an outer container (1), extending
along a longitudinal axis (X-X) which would generally lie vertical, with at least
one elastically deformable side wall (6,7), a closed bottom (2), and a top (3) provided
with an opening (4) defined by a rim (5), a flexible bag (13) placed inside said outer
container (1), said bag (13) having a mouth (12) and being intended for containing
the viscous product, a plate-like element (8) positioned across the opening (4) in
the container (1) top and being connected to the rim (5) of the latter, said plate-like
element (8) being provided with an axial passageway (10), parallel to the longitudinal
axis (X-X) of the outer container (1), having a collar (11) projected inwardly of
said outer container, said bag (13) having its mouth (12) sealed around said collar
(11), a head (27) provided in its inner side with a viscous product delivery conduit
(28) which has one end (30) provided with a delivery orifice (29) and an opposite
end (32) provided with an inlet orifice (31) in a communication with the axial passageway
(10) through said plate-like element (8), said head (27) including connecting means
(37) for being connected to the rim (5) of the opening (4) in the top of said outer
container (1), a first one-way valve means (34) placed in said viscous product delivery
conduit (28) and opening in the direction toward said delivery orifice (29), and a
second one-way valve means (25) opening in the direction toward the inner side of
the outer container (1), characterized in that it includes opening apart means comprising
at least one pair of elastically divergent legs (16,17,16a,17a,160,170) projecting
from a support (15,150) connected to said plate-like element (8), said legs extending
inside said bag (13) and applying a pressure force to the bag (13) directed toward
the outer container (1).
2. A dispenser according to Claim 1, characterized in that said legs have a free respective
end (18,19,18a,19a) which engages with the bag (13) at a location substantially halfway
along the longitudinal extent of the bag (13) within the outer container (1).
3. A dispenser according to Claim 1, characterized in that said legs (160,170) are connected
to each other by a flexible strip-like annular element (171) at their farthest position
from said support (150).
4. A dispenser according to claim 3, characterized in that said flexible strip-like annular
element (171) has an outline which mates the outline of the inner side of said outer
container (1).
5. A dispenser according to Claim 4 characterized in that said flexible strip-like annular
element (171) is provided with an axial width decreasing from the leg location to
the opposite locations (172,173) far away from the legs (160,170).
6. A dispenser according to Claim 1, characterized in that said plate-like element (8)
is provided with connecting means (9) for connecting said viscous product delivery
conduit (28) to the end (32) thereof carrying the inlet orifice (31).
7. A dispenser according to Claim 6, characterized in that said connecting means comprises
an annular groove (33) formed around said axial passageway (10), the cross-section
profile of such groove, sealingly fitting the profile of the end (30) carrying the
inlet orifice (29) of said delivery conduit (28).
8. A dispenser according to Claim 1, characterized in that said second one-way valve
means (25) is placed on said plate-like element (8) to one side of said axial passageway
(10).
9. A dispenser according to Claim 8, characterized in that said second one-way valve
means comprises a hollow seat (21) defined by a frusto-conical side wall (22) and
a top wall (23) being both formed on said plate-like element (8), with the taper pointing
toward said head (27) and the cavity toward said outer container (1), a plurality
of openings (24) formed in said frusto-conical side wall, an elastically flexible,
bell-shaped element (25) fitting inside said hollow seat (21), being connected to
said top wall (23) and caused to adhere elastically to said frusto-conical wall (22)
close against said plurality of openings (24).
10. A dispenser according to Claim 1, characterized in that said connecting means of attaching
said head (27) to the open top of said outer container (1) is carried on an annular
band (42) connected axially to the head (27) by a self-hinge flexible bridge (43)
and interlockingly mating profiles (44,45) around the confronting edges of the head
(27) and the band (42) in regions extending laterally of the bridge (43).
11. A dispenser according to Claim 10, characterized in that said plate-like element (8)
is provided with a ring grip (46) substantially co-planar with said plate-like element
(8) while in the rest condition, and adapted to be raised off it by pivotal movement
about a flexible connecting bridge (47), said ring grip (46) allowing the plate-like
element (8) and the bag (13) attached thereto to be taking manually out of said outer
container (1).
1. Spender für viskose Erzeugnisse, der einen äußeren Behälter (1), der sich entlang
einer Längsachse (X-X) erstreckt, die im allgemeinen vertikal verläuft, mit wenigstens
einer elastisch verformbaren Seitenwand (6,7), einem geschlossenen Boden (2) sowie
einer Oberseite (3), die mit einer durch einen Rand (5) begrenzten Öffnung (4) versehen
ist, einen flexiblen Beutel (13), der im Inneren des äußeren Behälters (1) angeordnet
ist, wobei der Beutel (13) eine Öffnung (12) aufweist und zur Aufnahme des viskosen
Erzeugnisses dient, ein plattenartiges Element (8), das über die Öffnung (4) in der
Oberseite des Behälters (1) hinweg angeordnet ist und mit dem Rand (5) des letzteren
verbunden ist, wobei das plattenartige Element (8) mit einem axialen Durchlaß (10)
parallel zur Längsachse (X-X) des äußeren Behälters (1) versehen ist, der einen Bund
(11) aufweist, der von dem äußeren Behälter nach innen vorsteht, wobei die Öffnung
(12) des Beutels (13) um den Bund (11) herum abgedichtet ist, einen Kopf (27), der
an seiner Innenseite mit einer Abgabeleitung (28) für das viskose Erzeugnis versehen
ist, die ein mit einer Abgabeöffnung (29) versehenes Ende (30), sowie ein gegenüberliegendes
Ende (32) aufweist, das mit einer Einlaßöffnung (31) versehen ist, die durch das plattenartige
Element (8) hindurch mit dem axialen Durchlaß (10) in Verbindung steht, wobei der
Kopf (27) eine Anbringungseinrichtung (37) zur Anbringung an dem Rand (5) der Öffnung
(4) in der Oberseite des äußeren Behälters (1) enthält, eine erste Rückschlagventileinrichtung
(34), die in der Abgabeleitung (28) für das viskose Erzeugnis angeordnet ist und sich
in Richtung auf die Abgabeöffnung (29) zu öffnet, sowie eine zweite Rückschlagventileinrichtung
(25) umfaßt, die sich in Richtung auf die Innenseite des äußeren Behälters (1) zu
öffnet.
dadurch gekennzeichnet, daß er eine sich öffnende Einrichtung enthält, die wenigstens ein Paar elastisch
auseinandergehender Schenkel (16,17,16a,17a,160,170) umfaßt, die von einer Halterung
(15,150) vorstehen, die mit dem plattenartigen Element (8) verbunden ist, wobei sich
die Schenkel im Innern des Beutels (13) erstrecken und eine Druckkraft auf den Beutel
(13) ausüben, die auf den äußeren Behälter (1) zu gerichtet ist.
2. Spender nach Anspruch 1, dadurch gekennzeichnet, daß die Schenkel jeweils ein freies Ende (18,19,18a,19a) aufweisen, das mit dem Beutel
(13) an einer Position im wesentlichen in der Mitte der Längsausdehnung des Beutels
(13) in dem äußeren Behälter (1) in Kontakt ist.
3. Spender nach Anspruch 1, dadurch gekennzeichnet, daß die Schenkel (160,170) an ihrer von der Halterung (150) am weitesten entfernten
Position durch ein flexibles streifenartiges, ringförmiges Element (171) miteinander
verbunden sind.
4. Spender nach Anspruch 3, dadurch gekennzeichnet, daß das flexible streifenartige, ringförmiges Element (171) einen Umriß aufweist,
der an den Umriß der Innenseite des äußeren Behälters (1) paßt.
5. Spender nach Anspruch 4, dadurch gekennzeichnet, daß das flexible streifenartige, ringförmige Element (171) eine axiale Breite aufweist,
die sich von der Position des Schenkels zu den einander gegenüberliegenden Positionen
(172,173) hin, die von den Schenkeln (160,170) entfernt sind, verringert.
6. Spender nach Anspruch 1, dadurch gekennzeichnet, daß das plattenartige Element (8) mit einer Verbindungseinrichtung (9) versehen ist,
die die Abgabeleitung (28) für das viskose Erzeugnis mit dem Ende (32) derselben verbindet,
das die Einlaßöffnung (31) trägt.
7. Spender nach Anspruch 6, dadurch gekennzeichnet, daß die Verbindungseinrichtung eine ringförmige Nut (33) umfaßt, die um den axialen
Durchlaß (10) herum ausgebildet ist, wobei das Querschnittsprofil dieser Nut dichtend
an das Profil des Endes (30) paßt, das die Einlaßöffnung (29) der Abgabeleitung (28)
trägt.
8. Spender nach Anspruch 1, dadurch gekennzeichnet, daß die zweite Rückschlagventileinrichtung (25) an dem plattenartigen Element (8)
an einer Seite des axialen Durchlasses (10) angeordnet ist.
9. Spender nach Anspruch 8, dadurch gekennzeichnet, daß die zweite Rückschlagventileinrichtung einen hohlen Sitz (21) umfaßt, der durch
eine kegelstumpfförmige Seitenwand (22) und eine obere Wand (23) begrenzt wird, die
beide an dem plattenartigen Element (8) ausgebildet sind, wobei der Konus auf den
Kopf (27) zu gerichtet ist und der Hohlraum auf den äußeren Behälter (1) zu, wobei
eine Vielzahl Öffnungen (24) in der kegelstumpfförmigen Seitenwand ausgebildet sind,
ein elastisch flexibles, glockenförmiges Element (25) in das Innere des hohlen Sitzes
(21) paßt, das mit der oberen Wand (23) verbunden ist und elastisch an der kegelstumpfförmigen
Seitenwand (22) nahe an der Vielzahl von Öffnungen (24) anliegt.
10. Spender nach Anspruch 1, dadurch gekennzeichnet, daß die Verbindungseinrichtung zur Anbringung des Kopfes (27) an der offenen Oberseite
des äußeren Behälters (1) von einem ringförmigen Band (42), das über einen flexiblen
Gelenksteg (43) und eingreifend ineinanderpassende Profile (44,45) um die einander
gegenüberliegenden Ränder des Kopfes (27) und des Bandes (42) in Bereichen, die sich
quer zu dem Steg (43) erstrecken, axial mit dem Kopf (27) verbunden ist, getragen
wird.
11. Spender nach Anspruch 10, dadurch gekennzeichnet, daß das plattenartige Element (8) mit einem Klemmring (46) versehen ist, der im Ruhezustand
im wesentlichen koplanar mit dem plattenartigen Element (8) ist, und durch Schwenkbewegung
um einen flexiblen Verbindungssteg (47) herum abgehoben wird, wobei der Klemmring
(46) die manuelle Entnahme des plattenartigen Elementes (8) und des daran angebrachten
Beutels (13) aus dem äußeren Behälter (1) ermöglicht.
1. Distributeur pour produits visqueux, comprenant un récipient extérieur (1), s'étendant
le long d'un axe longitudinal (X-X) généralement disposé verticalement, comprenant
au moins une paroi latérale élastiquement déformable (6, 7), un fond fermé (2) et
un dessus (3) pourvu d'une ouverture (4) définie par un bord (5), une poche flexible
(13) placée à l'intérieur dudit récipient extérieur (1), ladite poche (13) ayant une
bouche (12) et étant destinée à contenir le produit visqueux, un élément en forme
de plateau (8), positionné dans l'ouverture (4) ménagée dans le dessus du récipient
(1) et relié au bord (5) de celui-ci, ledit élément en forme de plateau (8) étant
pourvu d'un passage axial (10) parallèle à l'axe longitudinal (X-X) du récipient extérieur
(1), comprenant une collerette (11) saillant vers l'intérieur dudit récipient extérieur,
la bouche (12) de ladite poche (13) étant scellée autour de ladite collerette (11),
une tête (27) intérieurement pourvue d'un conduit (28) de distribution de produit
visqueux, ayant une extrémité (30) pourvue d'un orifice de distribution (29) et une
extrémité opposée (32) pourvue d'un orifice d'admission (31), communiquant avec le
passage axial (10) par l'intermédiaire dudit élément en forme de plateau (8), ladite
tête (27) incluant des moyens de liaison (37) destinés à être reliés au bord (5) de
l'ouverture (4) ménagée dans le dessus dudit récipient extérieur (1), un premier moyen
de clapet de non-retour (34) placé dans ledit conduit (28) de distribution de produit
visqueux, s'ouvrant en direction dudit orifice de distribution (29), et un deuxième
moyen de clapet de non-retour (25), s'ouvrant en direction de l'intérieur du récipient
extérieur (1), caractérisé en ce qu'il comprend des moyens écarteurs comprenant au
moins une paire de pattes élastiques divergentes (16, 17; 16a, 17a; 160, 170) saillant
depuis un support (15, 150) relié audit élément en forme de plateau (8), lesdites
pattes s'étendant vers l'intérieur de ladite poche (13) et exerçant une force de pression
sur la poche (13), qui est dirigée vers le récipient extérieur (1).
2. Distributeur selon la revendication 1, caractérisé en ce que lesdites pattes comportent
une extrémité respective libre (18, 19; 18a, 19a) qui entre en engagement avec la
poche (13) à un niveau situé essentiellement à michemin de l'étendue longitudinale
de la poche (13) à l'intérieur du récipient extérieur (1).
3. Distributeur selon la revendication 1, caractérisé en ce que lesdites pattes (160,
170) sont reliées les unes aux autres par l'intermédiaire d'un élément annulaire flexible
(171) en forme de bande, au niveau de leur extrémité distale par rapport au support
(150).
4. Distributeur selon la revendication 3, caractérisé en ce que ledit élément annulaire
flexible (171) en forme de bande présente un profil qui épouse le profil de la face
intérieure dudit récipient extérieur (1).
5. Distributeur selon la revendication 4, caractérisé en ce que ledit élément annulaire
flexible (171) en forme de bande présente une largeur axiale qui décroît, du point
de rattachement des pattes vers les points opposés (172, 173), éloignés des pattes
(160, 170).
6. Distributeur selon la revendication 1, caractérisé en ce que ledit élément (8) en
forme de plateau est pourvu de moyens connecteurs (9) permettant le raccordement dudit
conduit (28) de distribution de produit visqueux, par l'extrémité (32) de celui-ci,
qui porte l'orifice d'admission (31).
7. Distributeur selon la revendication 6, caractérisé en ce que lesdits moyens connecteurs
comprennent une gorge annulaire (33) conformée autour dudit passage axial (10), le
profil transversal de cette gorge s'ajustant de façon étanche sur le profil de l'extrémité
(30) portant l'orifice d'admission (29) dudit conduit de distribution (28).
8. Distributeur selon la revendication 1, caractérisé en ce que ledit deuxième moyen
de clapet de non-retour (25) est placé sur ledit élément (8) en forme de plateau,
d'un côté dudit passage axial (10).
9. Distributeur selon la revendication 8, caractérisé en ce que ledit deuxième moyen
de clapet de non-retour comporte un siège creux (21) défini par une paroi latérale
tronconique (22) et une paroi supérieure (23), ces parois étant toutes deux formées
dans ledit élément (8) en forme de plateau, le cône étant dirigé vers ladite tête
(27), et la cavité étant dirigée vers ledit récipient extérieur (1), une série d'ouvertures
(24) étant ménagée dans ladite paroi latérale tronconique, et comprenant un élément
élastique flexible (25) en forme de cloche, s'ajustant dans ledit siège creux (21),
étant relié à ladite paroi supérieure (23) et amené à adhérer élastiquement à ladite
paroi tronconique (22), se plaquant sur ladite série d'ouvertures (24).
10. Distributeur selon la revendication 1, caractérisé en ce que lesdits moyens connecteurs
destinés à rattacher ladite tête (27) au dessus ouvert dudit récipient extérieur (1)
sont supportés par une bande annulaire (42) axialement reliée à la tête (27) par l'intermédiaire
d'un pont flexible (43) faisant charnière, et comportent des profils conjugués (44,
45) s'enclenchant l'un dans l'autre, sur le pourtour des bords opposés de la tête
(27) et de la bande (42), dans des zones s'étendant latéralement par rapport au pont
(43).
11. Distributeur selon la revendication 10, caractérisé en ce que ledit élément (8) en
forme de plateau est pourvu d'un anneau-poignée (46), essentiellement coplanaire audit
élément (8) en forme de plateau lorsqu'il est en position de repos, conçu pour être
soulevé par rapport à celui-ci en un mouvement de basculement autour d'un pont de
liaison flexible (47), ledit anneau-poignée (46) permettant audit élément (8) en forme
de plateau et à la poche (13) attachée à ce dernier d'être manuellement retirés dudit
récipient extérieur (1).