WO1998045554A1 - A liner for a fluid bearing receptacle - Google Patents
A liner for a fluid bearing receptacle Download PDFInfo
- Publication number
- WO1998045554A1 WO1998045554A1 PCT/AU1998/000232 AU9800232W WO9845554A1 WO 1998045554 A1 WO1998045554 A1 WO 1998045554A1 AU 9800232 W AU9800232 W AU 9800232W WO 9845554 A1 WO9845554 A1 WO 9845554A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- liner
- fluid
- receptacle
- aperture
- flap
- Prior art date
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H4/00—Swimming or splash baths or pools
- E04H4/06—Safety devices; Coverings for baths
- E04H4/065—Floors adjustable in height
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H4/00—Swimming or splash baths or pools
- E04H4/14—Parts, details or accessories not otherwise provided for
- E04H2004/146—Fixing of liners
Definitions
- the present invention relates to a liner for a fluid bearing receptacle such as a swimming pool, chemical storage tank, dam, etc.
- the system comprises a flexible liner which is shaped to conform with the inside surface of a receptacle such as a swimming pool; and, a baffle which is located between an inside surface of the receptacle and the liner to form a spillway.
- the whole of the contents of the pool on top of the liner can be displaced to be beneath the liner.
- the liner is lifted from the bottom of the pool to overlie the pool.
- air is pumped into the spillway. The air, as it rises, lifts the water up the spillway and back onto the upper surface of the liner.
- a liner for lining the surface of a fluid bearing receptacle, said liner provided with one or more one way valves for controlling the flow of fluid between opposite sides of said liner, each one way valve arranged to allow fluid to flow in a direction from above said liner to below said liner and to substantially prevent flow of fluid from below said liner to above said liner.
- said valve includes an aperture formed in said liner and a gate, said gate movable between a first position in which it covers and substantially seals said aperture and a second position in which said gate is spaced from said aperture to allow a flow of fluid therethrough.
- valve further includes bias means for biasing said gate toward said first position.
- said bias means further acts to effectively couple said gate to said liner.
- said gate is in the form of a flap of material underlying said aperture and extending beyond the periphery of said aperture, a first length of the periphery of said flap being fixed to said liner and a second length of the periphery of the flap being free so that it can move away from said liner to allow fluid to flow from above said liner through said aperture to below said liner.
- said bias means includes a strip or sheet of elastic material extending beneath and across at least a portion of said second length of said periphery of said flap.
- valve further includes filter means extending across said aperture to filter fluid as it passes therethrough.
- said liner further includes sealing means disposed on one or both of: the periphery of said flap; and, on said liner about the periphery of said aperture; to assist in sealing said aperture when said liner is in contact with said surface of said receptacle and a fluid bears on an upper surface of said liner.
- said liner further includes means for selectively moving said gate between said first and second positions .
- a system for raising and lowering a liner of a fluid bearing receptacle said liner being in accordance with the first aspect of the invention and attached along its peripheral edge to said receptacle, said system including: baffle means adapted for connection to said receptacle in a manner so as to form a spillway which provides fluid communication between a lower side of said liner and an inside surface of said receptacle, said liner being detached from said receptacle in the region of said baffle means and reattached along its peripheral edge to an upper edge of said baffle means; first conduit for supplying a gas to the lower side of said liner; and, second conduit for supplying a gas to said spillway; whereby, in use, when a fluid is held within said receptacle on an upper side of said liner so as to hold said liner in a lining position with its lower side in contact with the inside surface of said receptacle and said baffle means, a gas
- Figure 1 is a sectional view from the side of an embodiment of the present liner in use in a swimming pool
- Figure 2 is an enlarged cross section of a portion of a first embodiment of the liner shown in Figure 1;
- Figure 3 is a plan view of the portion of the liner shown in Figure 2 ;
- Figure 4 is a cross section of a portion of a second embodiment of the liner with its valve in a closed position;
- Figure 5 is a cross section of a portion of a second embodiment of the liner with its valve in an open position
- Figure 6 is a plan view of the portion of the liner shown in Figures 4 and 5;
- Figure 7 is a partial section view of a system used for revising and lowering the liner
- FIG 8 is a front perspective view of a baffle plate used in the system shown in Figure 7;
- Figure 9 is a back view of the plate shown in Figure 8.
- Figure 10 is a plan view of a swimming pool incorporating a liner in accordance with the present invention and the system shown in Figure 7.
- a first embodiment of a liner 10 for a fluid bearing receptacle such as a swimming pool 12 is provided with at least one (in this case a plurality) of valves 14.
- the liner 10 is shown in Figure 1 in a semi- raised position.
- the raising and lowering of the liner 10 is achieved by use of the system as described in international application number PCT/AU97/00891.
- PCT/AU97/00891 A brief description of the system which enables the liner 10 to be lifted and lowered will be described later in this specification.
- PCT/AU97/ 00891 the contents of which is incorporated herein by way of reference.
- the valve 14 is a one way valve to allow the flow of fluid such as water 16 to flow from above the liner (ie. from an upper side 18 of the liner) to below the liner (ie. to a lower side 20) .
- the purpose of this is to speed up the lifting of the liner from a position in which it lines inside surface 17 of the pool 12 to a position which it overlies the upper surface of the water 16.
- the displacement of water 16 from above the upper surface 18 to below the lower side 20 is achieved by causing the water 16 to flow through a spillway.
- the incorporation of one or more valves 14 speeds this up as the water is able to flow directly through the valves 14 from above to below the liner.
- the valve 14 comprises an aperture 22 formed in the liner 10 with an underlying gate in the form of a flap 24.
- the flap 24 is dimensioned so as to wholly cover the aperture 22.
- a first length A B C D of the periphery of the flap 24 is fixed to the underside 20 of the liner about a portion of the aperture 22. This fixing can be done for example by forming a weld 26 along the length A B C D when the liner
- a second length A F E D of the periphery of the flap 24 remains free so that it can move away from the lower side 20 so as to allow water 16 to flow through the aperture 22.
- Biasing means in the form of a strip or sheet of resilient material 28 is attached to the lower side 20 of the liner 10 across the flap 24 so as to bias the flap into a first position in which it substantially seals the aperture 22.
- the resilient strap or sheet 28 can overlie the entirety of the flap 24 or merely extend across the whole or a portion of the periphery A F E D of the flap 24.
- a filter means in the form of a piece of meshing 30 is provided in the aperture 22 to filter the water 16 as it passes through the valve 14. This prevents the passage of any bodies of the size greater than the mesh size of meshing 30 from passing below the liner 10. For example, if the liner 10 were applied in a commercial fishing pond or tank, the meshing 30 would prevent the crop from passing beneath the liner 10.
- a sealing strip 32 is provided on either the flap 24 or the lower side 20 of the liner 10 along or inboard a line defined by the peripheral length A F E D of the flap 24.
- the sealing strip 32 can assist in preventing the seepage or leakage of any water 16 from above the upper side 18 to below the lower side 20 of the liner 10.
- a second embodiment of the liner 10 is shown in Figures 4 to 6.
- like reference numbers are used to designate like features.
- the main differences between the first and second embodiments are as follows.
- the flap or gate 24 is not welded or otherwise directly fixed to the liner 10. Rather the flap 24 is coupled to the liner 10 by a length of resilient material 28 which is connected between the liner 10 and the flap 24 along three sides A-B; B-C; and C-D of the flap 24.
- the outermost edge of the length of resilient material 28 is attached by weld 26 to undersurface 20 of the liner 10.
- Another difference between the embodiments is that in the second embodiment shown in Figures 4 to 6 , the sealing strip 32 extends completely about the aperture 22.
- the first and second embodiments are alike and function in substantially the same way.
- a system 36 for raising and lowering the liner 10 is depicted in Figures 7 to 10.
- the system 36 for raising and lowering the liner 10 of swimming pool 12 includes a baffle in the form of a plate 38 used to define a spill away 40 for providing fluid communication between lower side 20 of the liner 10 and an inside surface 17 of the pool 12.
- Upper edge 44 of the liner 10 is attached along and near an upper edge of surface of the pool 12 (except in the region behind the plate 38) and along upper edge 46 of the plate 38 using a conventional locking strip 48.
- Conduit 50 has a length 50' which extends along back face 52 of plate 38 below the upper edge 46. Holes or slots 54 cut in the plate 38 provide communication with length 50'.
- Conduit 56 having a length 56' extends across the back face 52 near its lower edge 58 to provide air to the spill way 40.
- the length 56' is provided with a number of holes 60 for admitting air into the spill way 40.
- air is directed through conduits 50, 50' to between lower side 20 of liner 10 and inside surface 42 of pool 12 and/or front surface 62 of the plate 38.
- the air progressively lifts the liner 10 up and away from the inside surface 42 displacing water held within the pool 12 to flow over upper edge 46 into the spill way 40 so that the water now lies beneath the lower side 20. In this way the liner 10 is progressively raised to eventually lie above the level of the water.
- air is passed through conduits 56, 56' into spillway 40.
- a pocket of air 34 becomes entrapped between the lower side of the liner 20 and the surface of the water under the lower side 20.
- This pocket of air is at a pressure at least equal to, if not greater than, the ambient air pressure acting on the upper surface
- the flap 24 is closed at least by the action of the resilient strip or sheet 28 if not also by the higher air pressure in the pocket 34 compared with the ambient pressure. Accordingly, once the valve 14 is raised above the level of the water 16 it is closed, preventing the air being injected between the lower side 20 and surface 17 of the pool 12 from escaping. Therefore the valves 14 do not interfere with the normal lifting operation of the liner 10.
- the liner 10 can be lifted substantially quicker than would otherwise occur by use of spillway 40 only as described in Applicant's international application number PCT/AU97/00891. This can be of substantial benefit if it is needed to retrieve something from the bottom of the pool very quickly or to quickly move the liner 10 from below to above the water 16 for example to prevent drowning. Additionally, it allows the use of lower capacity blowers, fans, or compressors to raise the liner 10.
- the second embodiment of the liner 10 as depicted in Figures 4 to 6 operates in essentially the same manner as described above with reference to the first embodiment.
- the only substantial difference in operation is that in the second embodiment the whole of the flap 24 can be spaced from the undersurface 20 and sealing strip 32 when the valve 14 is open (refer Figure 5) .
- the length AFED of the flap 24 can more away from the under surface 20 and sealing strip 32 to open the valve, (as the length ABCD is fixed to the undersurface 20) .
- the flap 24 can be attached to the lower side 20 of the liner 10 by any suitable means including the use of adhesives.
- the length of the periphery of the flap 24 fixed to the lower side 20 may be greater than or less than that shown in Figure 3.
- differences in either hydrostatic pressure or air pressure control the opening and shutting of the valve 14.
- the valve 14 could include a driven actuator to selectively open and close the flap 24.
- a hydraulic, pneumatic, electronic/magnetic device or system can be used to control the position of the gate or flap 24.
- the resilient strip or sheet 28 can be made of either a liquid pervious or impervious material, however an impervious material is preferred, particularly for the second embodiment shown in Figures 4-6.
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU67137/98A AU726041B2 (en) | 1997-04-03 | 1998-04-03 | A liner for a fluid bearing receptacle |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AUPO5972A AUPO597297A0 (en) | 1997-04-03 | 1997-04-03 | A liner for a fluid bearing receptacle |
AUPO5972 | 1997-04-03 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1998045554A1 true WO1998045554A1 (en) | 1998-10-15 |
Family
ID=3800273
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/AU1998/000232 WO1998045554A1 (en) | 1997-04-03 | 1998-04-03 | A liner for a fluid bearing receptacle |
Country Status (2)
Country | Link |
---|---|
AU (1) | AUPO597297A0 (en) |
WO (1) | WO1998045554A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2428377A (en) * | 2005-07-15 | 2007-01-31 | Ian Reid Lewis | Support panel |
US20090139633A1 (en) * | 2005-04-07 | 2009-06-04 | Sika Technology Ag | Method for Lining a Container and Lining of a Container |
IT201900019742A1 (en) * | 2019-10-24 | 2021-04-24 | Exonsteel S R L | MOBILE PLATFORM FOR POOLS |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3816859A (en) * | 1973-03-08 | 1974-06-18 | M Mosehauer | Pool covers |
US4285078A (en) * | 1979-04-17 | 1981-08-25 | French Masterpieces, Inc. | Automatic swimming pool cover |
NL8105926A (en) * | 1981-12-31 | 1983-07-18 | J A Monster B V | Floating cover sheet e.g. for swimming pool - is fixed to closed perimeter tube water-filled or emptied by pump to lower or raise sheet |
-
1997
- 1997-04-03 AU AUPO5972A patent/AUPO597297A0/en not_active Abandoned
-
1998
- 1998-04-03 WO PCT/AU1998/000232 patent/WO1998045554A1/en active IP Right Grant
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3816859A (en) * | 1973-03-08 | 1974-06-18 | M Mosehauer | Pool covers |
US4285078A (en) * | 1979-04-17 | 1981-08-25 | French Masterpieces, Inc. | Automatic swimming pool cover |
NL8105926A (en) * | 1981-12-31 | 1983-07-18 | J A Monster B V | Floating cover sheet e.g. for swimming pool - is fixed to closed perimeter tube water-filled or emptied by pump to lower or raise sheet |
Non-Patent Citations (1)
Title |
---|
DERWENT ABSTRACT, Accession No. 80-C9377C; & SE,A,78 08540 (TUNESTAD KL) 10 March 1980. * |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090139633A1 (en) * | 2005-04-07 | 2009-06-04 | Sika Technology Ag | Method for Lining a Container and Lining of a Container |
US8366849B2 (en) * | 2005-04-07 | 2013-02-05 | Sika Technology Ag | Method for lining a container and lining of a container |
GB2428377A (en) * | 2005-07-15 | 2007-01-31 | Ian Reid Lewis | Support panel |
GB2428377B (en) * | 2005-07-15 | 2010-12-01 | Ian Reid Lewis | Support panel |
IT201900019742A1 (en) * | 2019-10-24 | 2021-04-24 | Exonsteel S R L | MOBILE PLATFORM FOR POOLS |
Also Published As
Publication number | Publication date |
---|---|
AUPO597297A0 (en) | 1997-05-01 |
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