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EP 0 653 531 B1 |
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EUROPEAN PATENT SPECIFICATION |
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Mention of the grant of the patent: |
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08.10.1997 Bulletin 1997/41 |
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Date of filing: 16.11.1994 |
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International Patent Classification (IPC)6: E04H 4/14 |
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Swimming bath pool having a retaining wall
Schwimmbadbecken mit Trennwand
Piscine avec paroi de séparation
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Designated Contracting States: |
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BE CH DE DK ES FR GB IE LI LU NL SE |
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Priority: |
16.11.1993 NL 9301977
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Date of publication of application: |
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17.05.1995 Bulletin 1995/20 |
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Proprietor: POLYMARIN B.V. |
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1670 AD Medemblik (NL) |
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Inventor: |
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- Berkhout, Johannes Hendrikus
NL-1676 GL Twisk (NL)
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Representative: de Bruijn, Leendert C. |
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Nederlandsch Octrooibureau
P.O. Box 29720 2502 LS Den Haag 2502 LS Den Haag (NL) |
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References cited: :
EP-A- 0 532 079 NL-A- 7 207 667
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DE-A- 2 517 337 NL-A- 7 411 696
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| Note: Within nine months from the publication of the mention of the grant of the European
patent, any person may give notice to the European Patent Office of opposition to
the European patent
granted. Notice of opposition shall be filed in a written reasoned statement. It shall
not be deemed to
have been filed until the opposition fee has been paid. (Art. 99(1) European Patent
Convention).
|
[0001] The invention relates to a swimming bath pool according to the preamble of claim
1.
[0002] Such a swimming bath pool having a retaining wall is known from DE-A-2517337. Said
known retaining wall is at its lower edge pivotally connected to the opposing side
walls of the swimming bath pool. This known retaining wall is shiftable between a
vertical, upright position to extend above the water level, and a substantially horizontal,
retracted position to lie substantially flat with one of its side walls with the surface
of the swimming bath bottom, to be received in a recess in said swimming bath bottom.
The known retaining wall is locked in its upright position by retention between cam-shaped
stopper elements on each respective side wall of the swimming bath pool which, viewed
in the longitudinal direction of the retaining wall, can engage with both sides of
said retaining wall at its upper edge. The known retaining wall is hollow, and can
be filled with water or air respectively. By replacing the water by air, or visa versa,
the retaining wall can be swung between its upright, active position and its retracted,
inactive position.
[0003] A disadvantage of this known retaining wall is its rather poor connection with the
structure of the swimming bath pool. On the one hand this yield a relative week and
flexible retaining wall, which is a disadvantage for swimmers which use the retaining
wall as an abutment for their feet if they turn around while fast swimming in a straight
direction between the retaining wall and the opposing side wall of the swimming bath
pool. Apart from that, for swimming competition, lines will be connected to the retaining
wall and the opposing side wall of the swimming bath pool to divide the pool in several
delimited tracks. Due to the high tension forces in such lines, the known retaining
wall, due to its poor connection to the structure of the swimming bath pool, will
give too much flexural displacement in the centre part, such that the length of the
tracks is not the same, and the pool can not be used for tournaments. The rather low
stiffness of the connection of the retaining wall could be eliminated by increasing
the flexural stiffness of the retaining wall itself, however this calls for a larger
volume of the retaining wall, demanding further structural elements, such that increasing
its flexural stiffness yields a substantial rise of capital investments and such a
stiffening can not avoid a further disadvantage of this known retaining wall; in its
upright, active position, its pivoting elements and its retainer elements will be
relatively high loaded by for instance movements of the water, pressure differences
due to differing water levels at both sides of the retaining wall, swimmers climbing
on the retaining wall and diving there from, as well as the tension forces from the
lines dividing the pool in several tracks. The tension forces from such lines are
typically 600 kilogram for each line or even higher, while a typical pool with a width
of 25 m., there will be ten tracks, such that there are nine lines connected to the
retaining wall amounting to about 6.000 kilogram tension forces to be carried by two
pivots and two retaining elements.
[0004] The structural disadvantages of this known retaining wall can for instance be eliminated
on the basis of the understanding which is provided by NL-A-7207667, describing a
retaining wall which is pivotally connected at its lower edge to the swimming bath
pool, while at its upper edge being pivotally connected to a floating body. This floating
body can be levelled between a position projecting above the water level and a position
in which the floating body is received within a recess in the underwater bottom, by
means of pulling cables which can be lengthened or shortened. The retaining wall follows
the movements of the floating body. Such a combination of retaining wall and a floating
body connected thereto at each upper edge is used to, for instance to close the swimming
pool, seal an outdoor part of the pool from an indoor part of the pool. This known
combination demands for a floating body with a relatively large volume, and a complicated
and expensive mechanical drive system. The retaining wall from this known combination
is not loaded by swimmers or lines or whatsoever, since it is only in use when the
pool is out of use.
[0005] The present invention is concerned with eliminating or decreasing the drawbacks of
the retaining wall as indicated in the preamble, without the need for using additional
floating bodies to maintain the small volume necessary for having a retaining wall
such as is present with the retaining wall as indicated in the preamble or even to
decrease the space consumption in the combination with a less complicated drive system
to move the retaining wall between its retracted and projecting, upright position,
respectively.
[0006] For this purpose, the present invention suggests, a retaining wall as indicated in
the accompanying claim 1.
[0007] By the pivotable connection as indicated in the combination with the application
of the retaining function with the swimming bath bottom and with the indicated retention,
the retaining wall will have a substantial increased stiffness, such that flexural
displacement of the retaining wall will be kept to a minimum under the load of swimmers,
tension forces from lines, etc are decreased. Furthermore, there is a more even load
distribution over the connecting- and retaining elements between the retaining wall
and the swimming bad pool, such that those elements can be cheaper and demand less
maintenance, while serving greater durability. The connecting- and retaining elements
can be continuous elements, extending over the complete swimming bath bottom, but
can also be individual elements with a spacing of for instance one to four metres.
Since there are no provisions necessary at the top of the side walls of the swimming
bath pool, it can have a more attractive and safer design.
[0008] According to a preferred embodiment of the invention, which is further illustrated
in the description of the drawings, the retaining wall is integrated in a bridging
part extending between parts of the swimming bath bottom at a higher and a lower level.
[0009] Furthermore, the retaining wall according to the invention can be used in combination
with a swimming bath bottom of which the level is adjustable (a so-called adjustable
floor), for which purpose the retaining wall can be connected to the adjustable part
of the swimming bath bottom, and can be received in a recess in that movable part
of the swimming bath bottom if in its retracted position. An example of a swimming
pool with an adjustable floor is illustrated in EP-A-0532079, of applicant.
[0010] Further advantages and details will become apparent from the following description
of a non-limiting illustrative embodiment with reference to the accompanying drawings,
in which:
Figure 1 shows a perspective view of a section of a swimming bath, with a retaining
wall according to the present invention,
Figure 2 shows a sectional partial side view of the swimming bath of Figure 1, with
the retaining wall in its active and inactive position.
Figure 3 shows a partly sectional view, with partly cut away components, of a second
embodiment of the retaining wall according to the invention, forming integral part
with a bridging flap in the combination with a adjustable part of the swimming bath
floor in a first position; and
Figure 4 a view in accordance with figure 3, with the movable parts in a second position.
[0011] Referring to Figure 1, a swimming bath 1 having a rectangular building plan is shown.
From the bottom 2 thereof, a retaining wall 3 extends upwards to above the water level
10.
[0012] Figure 2 shows a more detailed view of the structure of the retaining wall 3 and
the fastening thereof to the bottom 2. The active position of the retaining wall 3
is shown by means of solid lines; the inactive position thereof by means of dash-dotted
lines. The retaining wall 3 is of hollow construction. Obviously, the wall 3 can also
be of solid construction. Viewed in cross section, the retaining wall 3 tapers slightly
from its base which is hingedly connected to the bottom 2 to its opposite free end.
A recess 4 is provided in the bottom 2, the profile section of which recess 4 corresponds
to the profile section of the retaining wall 3. At its base, the retaining wall 3
is provided with a hinge 9 along a longitudinal edge, which hinge 9 is connected to
the bottom 2 at the upper longitudinal boundary of the recess 4, as shown. As is shown
most clearly in Figure 1, a rubber sealing strip 5 is attached to the longitudinal
edge opposite the hinge 9, at the base of the retaining wall 3. Said sealing strip
runs in line with the respective side wall of the retaining wall 3. As is shown, said
rubber sealing strip 5 seals off the gap between the underside of the retaining wall
3 and the bottom of the recess 4, in order to prevent, for example, swimmers from
reaching the underside of the retaining wall 3. As a result of its flexible properties,
the rubber strip or flap 5 will automatically fold against the base of the retaining
wall 3 when the latter is hinged to its inactive position indicated by dash-dotted
lines in Figure 2.
[0013] A drive arm 6 projects from the base of the retaining wall 3, which drive arm is
bent at right angles at its end, as shown. Said drive arm is located, for example,
halfway along the length of the hinge 9. Another fastening point can also be selected
for the drive arm 6. It is likewise possible to use more than one drive arm 6, for
example depending on the load and the deformation of the parts. Near the free end
of the arm 6, a drive cable 7 is attached, which is guided, via a guide wheel 11,
to a drive element, not shown in any more detail here, for example a hydraulic or
pneumatic cylinder. The degree of hinging of the retaining wall 3 about the hinge
9 from the inactive to the active position shown in Figure 2, is limited by a blocking
element 8 which, in the position shown in Figure 2, interacts with the drive arm 6
in a blocking manner. As shown in Figure 2, said blocking element 8 is integrated
in the bottom 2. If desired, the blocking element can also be adjustable in order
to adjust the degree of swing of the retaining wall 3 about the hinge 9.
[0014] Furthermore, a protective rubber strip 12 is provided on the side of the recess 4
opposite the hinge 9, in order to prevent swimmers from hurting themselves. As is
also shown in Figures 1 and 2, the section of the bottom 2, which section is on the
right-hand side in the drawing, is constructed at a lower level. Said section can
also be constructed, for example, to be adjustable in height. This height adjustment
can be effected in any conventional way, for example as described in DE-A-25 56 026,
reference being made in particular to Figure 1 thereof. Said Figure 1 shows that the
height-adjustable section of the bottom adjoins the fixed section of the bottom by
means of a hinged flap. Said flap seals any gap between the upper side of the lower
section of the bottom and the underside of the higher section of the bottom. Instead
of being connected to the fixed section of the swimming bath bottom 2, the retaining
wall 3 can also be hingedly connected to a height-adjustable section of the swimming
bath bottom 2.
[0015] Obviously, it is likewise possible hingedly to connect the retaining wall 3 to the
swimming bath bottom 2 in such a manner that the former, in its inactive, folded-down
position, comes to lie on top of the bottom 2. A recess 4 is then not present in the
swimming bath bottom 2. However, in that case, the folded-down retaining wall 3 can
be an inconvenient projection on the swimming bath bottom 2.
[0016] Figure 3 and 4 show an alternative embodiment of the present invention. Indicated
is a swimming bath pool 1 with a bottom part 14 at a lower level and a bottom part
15 at a higher level. The height of the bottom part 15 is adjustable. Therefore, this
part 15 has floating capacity and is retained by pulling cables 17. Compared to figure
3, in figure 4 the bottom part 15 is at a lower level. A bridging part or flap 13
extends between the bottom parts 14, 15. With the flap 13, it is impossible for swimmers
to swim below the bottom part 15. Such a flap 13, which can slide or ride with each
lower edge over the bottom part 14, and is pivotally connected to the bottom part
15, is known as such from NL-A-7411696. In the known embodiment, said bridging part
13 is pivotally connected to an adjustable floating body with its upper edge.
[0017] According to the present invention, the bridging part 13 is an integral part with
the retaining wall 3. As is illustrated in figure 3 and 4, this combination of bridging
part 13 and retaining wall part 3 can swing with respect to the bottom part 15 and
can slide with respect to said bottom part 15 as well, viewed in the direction from
the upper edge to the lower edge and vice versa. Therefor it is possible, to move
the retaining wall part 3 from the extended position as illustrated in figure 3, in
which the upper edge projects above the water level 10, into a retracted position
as indicated in figure 4, such that the upper edge of the retaining wall part 3 lies
substantially flat with the upper face of the bottom part 15. For that reason, the
retaining wall part 3 is provided with slide guides 19, which are evenly distributed
over the length of the retaining wall part 3. For instance, those guides 19 have a
pitch of one to four metres. In the side wall of the retaining wall part 3 facing
the bottom part 15 slots 18 are provided, which are registered with the guides 19.
A link 20 projects trough each slot 18. A spring element 21 biasses the link 20 to
its retracted position within the bottom part 15. With its end projecting from the
bottom part 15, each link 20 is rotatable/swingable at 22 connected to a respective
guiding element. Therefor, there is a pivotable slight connection 16 between the bottom
part 15 and the retaining wall part 3. With pulling cables 24, 25, the retaining wall
part 3 can be locked in its extended position (figure 3).
[0018] To move the combination of the bridging part 13 and the retaining wall part 3 from
the position as illustrated in figure 3 to the position as illustrated in figure 4,
an actuating arm 23 is connected to the combination below the bottom part 15, projecting
from the bridging part 13. Said arm 23 is at its free end coupled to a pulling cable
24. By pulling the pulling cable 24, the combination can be swiftled in the direction
of arrow A. For return, a pulling cable 25 is connected to the bridging part 13 in
the vicinity of its lower edge. Instead of an arm 23 for the pivotal movement of the
combination of bridging part 13 and retaining wall 3, a structure as illustrated in
figure 2 and 3 of NL-A-7411696 could be adopted to.
[0019] Obviously, it is likewise possible to have further embodiments, which belong to the
scope of the invention. It is important, that at several spaced apart positions in
lengthwise direction of the retaining wall there is a pivotal or swingable connection
with the swimming bath bottom, and that also at different spaced apart positions in
the lengthwise direction of the retaining wall retaining elements are active between
said retaining wall and the swimming bath pool for retaining the retaining wall in
its extended position.
1. Swimming bath pool (1) having a plate shaped retaining wall (3), which can be moved
into an active, projecting position to extend from the vicinity of the swimming bath
bottom (2) to the water level (10) and projecting there above, to split the swimming
bath pool in two parts on both sides of the said retaining wall, and can be moved
in a retracted position, such that swimmers can pass the said retaining wall substantially
unhindered, in which the said retaining wall can be pivoted with respect to the swimming
bath bottom, and the said retaining wall at its upper edge to project above the water
level is free from bodies extending along said edge and which are meant to retain
said retaining wall in its active, extended position, and with elements (6) to lock
the retaining wall in its active position, characterised in that the said retaining
wall is coupled with the said swimming bath bottom (2) by swing- or pivot connections
(9) distributed over the length of the said retaining wall, and that the said locking
elements are distributed over the length of the said retaining wall as well, and are
active between the said retaining wall and the said swimming bath bottom.
2. Swimming bath pool according to Claim 1, characterized in that the swimming bath bottom
(2), on the side facing the retaining wall (3), is provided with a recess (4) for
receiving the retaining wall (3) when it is in its inactive position, in such a manner
that the latter is level with the upper surface of the bottom (2).
3. Swimming bath pool according to Claim 2, characterized in that the retaining wall
(3), at its base and with one longitudinal edge, is connected to the bottom (2) by
means of a hinge (9) at the boundary of the recess (4), at the upper surface (2),
and in that a sealing flap (5), running in line with the retaining wall and made of
a relatively readily flexible material, is attached to the opposite longitudinal edge,
at the base of the retaining wall (3), which sealing flap (5), when the retaining
wall (3) is in its active position, fills the gap which is defined by the underside
of the base of the retaining wall (3) and the bottom of the recess (4).
4. Swimming bath pool according to one of the preceding claims, characterized in that
the retaining wall (3) is provided at its base with one or more drive arms (6), which,
in relation to the height direction of the retaining wall (3), project from said base
and into the bottom (2), and to the end of which a drive means (7) is connected.
5. Pool according to Claim 4, characterized in that a blocking element (8) is provided,
which interacts with one or more of the drive arms (6) when the retaining wall (3)
is in its active position in order to prevent swinging over in the direction from
the inactive position.
6. Swimming bath pool according to claim 1, characterised in that the said retaining
wall forms integral part with a substantially plate shaped bridging body (13), running
between a bottom part (14) at a lower level and a bottom part (15) at a higher level
of the swimming bath bottom.
7. Swimming bath pool according to claim 6, characterised in that the said retaining
wall (3) is coupled to the bottom part (15) of the swimming bath bottom at a higher
level via the swing- or pivot connections (16).
8. Swimming bath pool according to claim 6 or 7, characterised in that the said retaining
wall (3) can slight or shift with respect to the said upper part (15) of the said
swimming bath bottom viewed in the direction of the upper edge towards the lower edge
of the said retaining wall (3) or vice versa.
9. Swimming bath pool according to one of the preceding claims, characterised in that
the space between two adjacent swing- or pivot connections is about the same as the
distance between the lower and upper longitudinal edge of the said retaining wall
(3) at a maximum.
10. Pool according to one of the preceding claims, characterized in that at least one
section of the bottom (2) is constructed to be adjustable in height.
1. Schwimmbadbecken (1) mit einer plattenförmigen Trennwand (3), die in eine aktive,
vorspringende Stellung bewegt werden kann, und sich von der Nähe des Schwimmbadbodens
(2) zur Wasseroberfläche (10) und darüberhinaus vorspringend erstreckt, um das Schwimmbadbecken
in zwei Teile auf beiden Seiten der genannten Trennwand zu teilen, und die in eine
eingefahrene Stellung bewegt werden kann, so dass Schwimmer die Trennwand im wesentlichen
ungehindert passieren können, indem die genannte Trennwand in Bezug auf den Schwimmbeckenboden
verschwenkt werden kann, und die genannte Trennwand an der oberen über die Wasseroberfläche
hinausragenden Kante frei von Körpern ist, die sich entlang dieser Kante erstrecken
und dazu bestimmt sind, diese Trennwand in ihrer aktiven ausgefahrenen Position zu
halten, und mit Elementen (6) zum Verriegeln der Trennwand in ihrer aktiven Position,
dadurch gekennzeichnet, dass die genannte Trennwand mit dem genannten Schwimmbeckenboden
(2) durch Schwing- oder Drehverbindungen (9) verbunden ist, die über die Länge dieser
Trennwand verteilt sind und dass die genannten Verriegelungselemente ebenfalls über
die Länge der genannten Trennwand verteilt sind und zwischen der genannten Trennwand
und dem genannten Schwimmbadboden wirken.
2. Schwimmbadbecken nach Anspruch 1, dadurch gekennzeichnet, dass der Schwimmbadboden
(2) auf der der Trennwand (3) gegenüberliegenden Seite mit einer Aussparung (4) zur
Aufnahme der Trennwand (3) in ihrer inaktiven Stellung in der Weise versehen ist,
dass in letzterer Stellung die Trennwand in einer Ebene mit der oberen Fläche des
Bodens (2) liegt.
3. Schwimmbadbecken nach Anspruch 2, dadurch gekennzeichnet, dass die Trennwand (3) an
ihrer Basis und mit einer Längskante mit dem Boden (2) mittels eines Gelenks (9) an
der Kante der Aussparung (4) in der oberen Oberfläche (2) verbunden ist, und dass
eine Dichtungsklappe (5), die in Linie mit der Trennwand verläuft und aus einem relativ
leicht flexiblen Material besteht, an der gegenüberliegenden Längskante an der Basis
der Trennwand (3) befestigt ist, wobei die Dichtungsklappe (5), wenn die Trennwand
(3) in ihrer aktiven Stellung ist, den Spalt füllt, der durch die Unterseite der Basis
der Trennwand (3) und den Boden der Aussparung (4) definiert wird.
4. Schwimmbadbecken nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet,
dass die Trennwand (3) an ihrer Basis mit einem oder mehreren Antriebsarmen (6) versehen
ist, die sich in Bezug auf die Höhenrichtung der Trennwand (3) von dieser Basis aus
und in den Boden (2) erstrecken und mit deren Enden ein Antriebsmittel (7) verbunden
ist.
5. Becken nach Anspruch 4, dadurch gekennzeichnet, dass ein Blockierelement (8) angeordnet
ist, das mit einem oder mehreren der Antriebsarme (6) zusammenwirkt, wenn die Trennwand
(3) in ihrer aktiven Stellung ist, um zu verhindern, dass diese in Richtung von der
inaktiven Stellung weg zu weit dreht.
6. Schwimmbadbecken nach Anspruch 1, dadurch gekennzeichnet, dass die genannte Trennwand
einen integralen Teil mit einem im wesentlichen plattenförmigen Übergangskörper (13)
bildet, der zwischen einem Bodenteil (14) einer niedrigeren und einem Bodenteil (15)
einer höheren Ebene des Schwimmbadbodens verläuft.
7. Schwimmbadbecken nach Anspruch 6, dadurch gekennzeichnet, dass die genannte Trennwand
(3) mit dem Bodenteil (15) des Schwimmbadbodens auf einer höheren Ebene mittels Schwing-
oder Drehverbindungen (16) verbunden ist.
8. Schwimmbadbecken nach Anspruch 6 oder 7, dadurch gekennzeichnet, dass die genannte
Trennwand (3) in Bezug auf den oberen Teil (15) des genannten Schwimmbadbodens gleiten
oder sich verlagern kann, gesehen in Richtung auf die obere Kante gegen die untere
Kante der genannten Trennwand (3) oder umgekehrt.
9. Schwimmbadbecken nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet,
dass der Abstand zwischen zwei nebeneinanderliegenden Schwing- oder Drehverbindungen
ungefähr der gleiche ist, wie die Entfernung zwischen der oberen und unteren Längskante
der genannten Trennwand (3) bei einem Maximum.
10. Becken nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass mindestens
ein Teil des Bodens (2) so konstruiert ist, dass er in der Höhe einstellbar ist.
1. Bassin de piscine (1) comportant une paroi de retenue en forme de plaque (3), qui
peut être amenée en position active, saillante, de façon à s'étendre depuis le voisinage
du fond (2) de la piscine jusqu'au niveau de l'eau (10) et à dépasser au-dessus de
celui-ci, afin de séparer le bassin de piscine en deux parties des deux côtés de ladite
paroi de retenue, et qui peut être amenée en position rentrée, de sorte que les nageurs
peuvent franchir ladite paroi de retenue en toute liberté, dans lequel ladite paroi
de retenue peut être amenée à pivoter par rapport au fond de la piscine, et ladite
paroi de retenue, au niveau de son bord supérieur destiné à dépasser au-dessus du
niveau de l'eau, est dépourvue de corps s'étendant le long dudit bord et conçus pour
retenir ladite paroi de retenue dans sa position active, en extension, et comporte
des éléments (6) destinés à verrouiller la paroi de retenue dans sa position active,
caractérisé en ce que ladite paroi de retenue est reliée audit fond (2) de la piscine
par des fixations basculantes ou pivotantes (9) réparties le long de ladite paroi
de retenue, et en ce que lesdits éléments de verrouillage sont également répartis
le long de ladite paroi de retenue, et agissent entre ladite paroi de retenue et ledit
fond de la piscine.
2. Bassin de piscine selon la revendication 1, caractérisé en ce que le fond (2) de la
piscine, du côté faisant face à la paroi de retenue (3), est muni d'un évidement (4)
destiné à recevoir la paroi de retenue (3) lorsqu'elle se trouve dans sa position
inactive, de telle manière que cette dernière est au même niveau que la surface supérieure
du fond (2).
3. Bassin de piscine selon la revendication 2, caractérisé en ce que la paroi de retenue
(3), au niveau de sa base et d'un premier bord longitudinal, est reliée au fond (2)
au moyen d'une charnière (9) à la limite de l'évidement (4), au niveau de la surface
supérieure (2), et en ce qu'un volet de fermeture (5), s'étendant dans l'alignement
de la paroi de retenue et fait d'un matériau relativement facile à plier, est fixé
au bord longitudinal opposé, au niveau de la base de la paroi de retenue (3), lequel
volet de fermeture (5), lorsque la paroi de retenue (3) est dans sa position active,
comble l'espace qui est défini par le dessous de la base de la paroi de retenue (3)
et le fond de l'évidement (4).
4. Bassin de piscine selon l'une quelconque des revendications précédentes, caractérisé
en ce que la paroi de retenue (3) est munie, au niveau de sa base, d'un ou plusieurs
bras de commande (6) qui, par rapport à la direction de la hauteur de la paroi de
retenue (3), dépassent de ladite base et s'introduisent dans le fond (2), un moyen
de commande (7) étant relié à l'extrémité de ceux-ci.
5. Bassin selon la revendication 4, caractérisé en ce qu'il est prévu un élément de blocage
(8), qui coopère avec un ou plusieurs des bras de commande (6) lorsque la paroi de
retenue (3) est dans sa position active, afin d'empêcher le basculement excessif dans
l'autre direction par rapport à la position inactive.
6. Bassin de piscine selon la revendication 1, caractérisé en ce que ladite paroi de
retenue forme partie intégrante d'un élément de raccordement sensiblement en forme
de plaque (13), s'étendant entre une partie de fond (14) à un niveau inférieur et
une partie de fond (15) à un niveau supérieur du fond de la piscine.
7. Bassin de piscine selon la revendication 6, caractérisé en ce que ladite paroi de
retenue (3) est reliée à la partie de fond (15) du fond de la piscine située à un
niveau plus élevé par l'intermédiaire de fixations basculantes ou pivotantes (16).
8. Bassin de piscine selon la revendication 6 ou la revendication 7, caractérisé en ce
que ladite paroi de retenue (3) peut s'aplanir ou se décaler par rapport à ladite
partie supérieure (15) dudit fond de la piscine, observée dans la direction allant
du bord supérieur vers le bord inférieur de ladite paroi de retenue (3) ou vice versa.
9. Bassin de piscine selon l'une quelconque des revendications précédentes, caractérisé
en ce que l'intervalle entre deux fixations basculantes ou pivotantes adjacentes est
à peu près identique à la distance séparant le bord longitudinal inférieur et le bord
longitudinal supérieur de ladite paroi de retenue (3), au maximum.
10. Bassin selon l'une quelconque des revendications précédentes, caractérisé en ce qu'au
moins une partie du fond (2) est conçue de façon à être réglable en hauteur.