WO2005042887A2 - A hinge coupling three buoyant-slat pool cover sections - Google Patents
A hinge coupling three buoyant-slat pool cover sections Download PDFInfo
- Publication number
- WO2005042887A2 WO2005042887A2 PCT/US2004/036026 US2004036026W WO2005042887A2 WO 2005042887 A2 WO2005042887 A2 WO 2005042887A2 US 2004036026 W US2004036026 W US 2004036026W WO 2005042887 A2 WO2005042887 A2 WO 2005042887A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- hinge
- slats
- longitudinal
- buoyant
- slat
- 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
- E04H4/08—Coverings consisting of rigid elements, e.g. coverings composed of separate or connected elements
- E04H4/082—Coverings consisting of rigid elements, e.g. coverings composed of separate or connected elements composed of flexibly or hingedly-connected slat-like elements, which may or may not be wound-up on a fixed axis
Definitions
- the invention relates to buoyant-slat automatic pool cover systems, and in particular, to buoyant-slat systems that extend and retract two or more pool cover sections simultaneously.
- Description of the Prior Art Covering a swimming pool having an irregular (non-rectangular) shape with a cover formed from longitudinally, interconnected, rigid buoyant-slats typically requires two or more cover sections that emerge from covered troughs located in the interior of the pool below the bottom surface of the pool and extend oppositely to cover the pool. [See EPO 0369038 Al & Bl, R. Granderath, and DE 19807576 A. ⁇ , K. Frey.]. Descriptions of typical buoyant slats for such pool cover systems are described in U.S.
- a typical solar buoyant-slat for a pool cover has a transparent upper or top surface and a dark bottom or undersurface (See U.S. Pat. No. 5,732,846, Helge, col. 1, 11 27 - 34).
- Each slat is an extruded plastic tube with two or more stoppered, air filled longitudinal flotation chambers having a longitudinal male, prong hook along one side and a cooperating, longitudinal female prong-receiving channel along its other side [See Figures 1 & 2].
- Pluralities of such slats are interleaved together to form a flexible or rollup-able cover.
- Buoyant pool cover slats are also quite vulnerable to over heating, i.e., heat increases air pressure trapped in the flotation chambers that can compromise the water tightness of the slat. Water convection cools the dark undersides of solar slats forming the cover when the cover is deployed on a pool surface.
- the couplings between adjacent coupled slats are essentially a loose, longitudinal, bidirectional hinge that is flexible or bendable back and forth around the longitudinal coupling typically allowing a 30° topside flex and a 45° underside flex with reference to the horizontal plane of the cover floating on a pool surface.
- the degree of topside and underside flexibility of the coupling between adjacent buoyant slats cover affects both the direction the cover is wound and the minimum diameter of the cover drum.
- the minimum radius of curvature of such flexed buoyant-slat covers ranges from 4 to 6 inches depending on whether the direction of the flex is in a topside or underside direction.
- buoyant-slats forming the cover sections are not easily anchored to the pool walls particularly when the leading tongue sections of the cover are not as wide as the body of the cover.
- Edge recesses along the sides of a pool for supporting the ends of buoyant slats forming a pool cover require accommodating interior vertical recesses in the poolside walls to allow retraction and deployment of the cover from an interior, pool bottom trough. Even then, the ends of the buoyant slats of a fully deployed cover spanning across the pool at the vertical sidewall recesses would not be supported.
- interior poolside wall structures enhancing safety of rigid, buoyant-slat pool covers deploying from interior, pool bottom troughs must be designed to accommodate and allow for buoyant deployment as well as retraction of the widest regions of the respective buoyant-slat pool cover sections.
- tail sections of two oppositely extending sections of a buoyant-slat pool cover to remain submerged below the pool surface when the cover is fully deployed is neither feasible nor safe.
- such submerged tail sections would extend down from the pool surface adjacent each other toward the cover drum in the interior, pool bottom trough.
- Tensioned by buoyancy, such submerged adjacent, vertically oriented tail sections present a vertical crease that not only can easily entrap a person absent lateral support, but also, regardless of lateral support, that will entrap debris collecting, blown or left on the cover surface, e.g., leaves, towels, shoes, and clothing.
- Such entrapped debris would not be easy to remove from such a vertical crease without disassembling the cover because of tensioning by buoyancy forces.
- the three modified longitudinal buoyant slats of the assembled hinge present three cooperating coupling structures extending longitudinally along the slat sides opposite the hinge for coupling a vertical section and two horizontal sections of a buoyant-slat pool cover extending/retracting from an interior, pool bottom trough where the vertical section extends up and down between the cover drum and the pool surface and the horizontal sections extend/retract in opposite directions on a pool surface.
- a primary novel aspect of the invented hinge is that it may be fabricated by modifying typical pool cover buoyant slats preferably by cutting off or removing the longitudinal, coupling prong along one side of the slat and then cutting uniformly spaced, hinge bays penetrating perpendicularly into the prong-side flotation chambers of the slats.
- a hinge plate having a coupling aperture is then placed in each hinge bay of a first so modified buoyant slat with a portion of the coupling aperture extending into the prong-side flotation chamber.
- a first longitudinal hinge pin inserted via openings through the ends of the prong-side flotation chamber of that slat, is then passed through the portion of the coupling aperture of each hinge plate received within each hinge bay inside the flotation chamber pinning the hinge plate to the slat. Then a second so modified buoyant slat is aligned along side of the first modified buoyant slat with its uniformly, spaced hinge bays receiving the hinge plates pinned to the first slat so that a portion of the coupling apertures through the hinge plates extends into the flotation chamber of that second so modified buoyant slat.
- a second longitudinal pin similarly inserted via openings in the ends of the prong-side flotation chamber of the second modified buoyant slat, is passed through the portion of the coupling aperture of each hinge plate received within each hinge bay inside the flotation chamber of the second modified buoyant slat pivotally coupling the first and second modified buoyant slats together.
- a third so modified buoyant slat is then aligned adjacent along the juncture of the pinned together first and second of the so modified buoyant slats with its uniformly, spaced hinge bays also receiving the hinge plates, this time with a portion of the coupling aperture vertically spaced from the portions through which the first and second longitudinal pins pass, extending into the flotation chamber of that third modified buoyant slat.
- a third longitudinal pin, similarly inserted via openings in the ends of the prong-side flotation chamber of the third modified buoyant slat is passed through the respective vertical spaced portions of coupling apertures of the hinge plates inside the flotation chamber of the third modified buoyant slat pivotally coupling the first, second and third modified buoyant slats together.
- the invented hinge Upon assembly, the invented hinge provides a pivotal coupling with three angularly spaced, parallel hinge axes, adapted to be coupled, by the remaining longitudinal prong- receiving channel of the three so modified, longitudinal buoyant slats, to three separate buoyant-slat pool cover sections that can deploy and retract in three different directions, each independently pivotable about a separate, angular spaced, but parallel axis aligned with the longitudinal slats forming the cover.
- the three angularly spaced, parallel hinge axes of the invented hinge permit two oppositely extending/retracting horizontal buoyant-slat pool cover sections to horizontally float flat on a pool surface when fully deployed eliminating any tail section vertical crease between the deployed horizontal cover sections.
- the invented hinge allows the oppositely moving horizontal pool cover sections floating fully deployed on the pool surface to be tensioned and anchored increasing its surface load carrying capacity by mechanically, pulling on and anchoring the leading front edges of the oppositely extended, floating horizontal cover sections at the opposite ends of the pool.
- Another advantage is that the underwater, vertical extending/retracting section of the buoyant-slat cover coupled to the two oppositely extending horizontal section of the cover by the invented hinge can be narrower than the horizontal sections, thus enabling automatic deployment of safety rail sections along the pool sides above the pool bottom cover drum trough after the cover is fully deployed covering the pool surface complementing existing poolside safety rails systems located just below the pool surface for supporting the ends of the buoyant slats of the deployed pool cover.
- the invented hinge maybe less buoyant than the adjacent buoyant slats of the horizontal pool cover sections coupled to it, the submerged section of a buoyant-slat cover beneath the hinge extending down coupled to the pool bottom cover drum trough can be extended slightly so that those buoyant slats buoy the hinge to the water surface.
- Figures 1 & 2 illustrate cross sections of typical "Helge" buoyant pool cover buoyant slat extrusions and how they coupled together.
- Figure. 3 is a perspective rendering illustrating the relationship of a hinge plate with coupling apertures and the longitudinal hinge pins passing through the hinge plate coupling apertures.
- Figures 4 illustrates in perspective, cutting of hinge bays simultaneously into the prong-side flotation chamber of three buoyant slats modified by having their longitudinal coupling prong removed.
- Figure 5 illustrates in cross section cross section three angularly spaced parallel hinge axes and the three modified buoyant slat extrusions of the invented hinge oriented in its deployed configuration floating at a pool surface.
- Figure 6 illustrates in cross section cross section three angularly spaced parallel hinge axes and the three modified buoyant slat extrusions of the invented hinge oriented in its (vertically oriented) storing configuration when wound into the cover roll around a cover drum.
- Figure 7 is a partial top view of the invented hinge coupling two horizontal buoyant-slat pool cover sections deployed on a pool surface
- a typical longitudinal, buoyant pool cover slat 11 comprises an extruded plastic tube having one or more longitudinal flotation chambers 12, with a longitudinal prong 13 along one side, and longitudinal female prong-receiving channel 14 along the opposite side.
- the extruded tubes are cut in lengths appropriate for spanning a pool surface and the ends stoppered (not shown) trapping air within the flotation chambers 12 [See U.S. Patent No. 5,732,846, Helge].
- the bottom surfaces 16 of solarized slats 11 are typically dark and opaque while the top surface 15 is transparent.
- the longitudinal male prongs of the slats 11 are interleaved into the cooperating longitudinal female prong-receiving channels 14 of adjacent slats 11 for forming a flexible cover that can be wound around a cover drum.
- the longitudinal junctions or couplings between adjacent slats 11 are not snug, but rather, are loose allowing the prongs 13 to move transversely within the female prong-receiving channels 14. This enables adjacent coupled slats 11 to flex around the longitudinal coupling relative to each other.
- the invented hinge is preferably fabricated from three such typical pool cover buoyant slats 11 preferably modified first by cutting off or removing the longitudinal, coupling prongs 13 along one longitudinal side of each slat as indicated by the dashed cut line 17 in Figure 1.
- the longitudinal, coupling prongs 13 are chosen for removal rather the cooperating, female prong-receiving channels 14 in the illustrated case because the outside longitudinal sidewalls 18 of the flotation chambers 12 adjacent the longitudinal prongs 13 have rounded or contoured exterior corners, whereas the outside longitudinal sidewalls 19 of the flotation chambers 12 adjacent the female, prong-receiving channels 14 have 'squared' exterior corners.
- Rounded or contoured outside longitudinal sidewalls are preferred over 'squared' outside longitudinal sidewalls for buoyant pool cover slats modified for fabricating the invented hinge, because the joined longitudinal sidewalls of the modified slats must pivot longitudinally adjacent to each other.
- a series of uniformly spaced hinge bays 27 are then simultaneously cut perpendicularly into the prong-removed- side edges 24 penetrating to a uniform depth into the adjacent the flotation chambers 26 of modified slats 21-23 as shown by dashed lines 41 in figures 5 and 6.
- the depth of the hinge bays 27 are determined by dimensions of apertured hinge plates 31 (see Figure 3) to be located in the hinge bays 27.
- the hinge bays 27 must be of sufficient depth to accommodate hinge plates 31 as modified slats 21 and 22 pivot from horizontal deployed positions floating at a pool surface (Fig. 5) to adjacent (vertically oriented) storing positions when wound into the cover roll around a cover drum (Fig. 6).
- the thickness of the hinge plates 31 received in the hinge bays 27 determine the width of the hinge bays 27 cut into the prong-removed-side edges 24 of the modified slats 21-23. Loose as opposed to tight engagement is preferred.
- the location of and spacing between hinge bays 27 depend on both aesthetics (appearance) and mechanical factors. In particular, it is necessary to preclude excessive longitudinal bending or deformation of the longitudinal components of the assembled hinge (the modified buoyant slats 21, 22, & 23 ⁇ Figs. 5 & 6 ⁇ and longitudinal hinge pins 32 ⁇ Fig.
- each hinge plate 31 is appropriately sized in light of the width of the side edge and thickness of the sidewall of the prong-side floatation chamber of the particular extruded buoyant slats chosen for the pool cover (see Figs. 5 & 6).
- the coupling aperture(s) 33 and 34 punched through the flat body of the hinge plates 31 are likewise sized, shaped and oriented to allow the particular three modified buoyant slats 21, 22 and 23 to freely pivot, longitudinally to positions adjacent each other when pinned together by the longitudinal hinge pins 32 passing through the coupling aperture(s) 33 & 34 inside of the respective prong-side flotation chambers 12 of the three modified slats 21, 22, & 23.
- the hinge plates 31 present an oblong horizontal lobe with a depending a vertical lobe. The lobes have a width approximately equal to the thickness of the particular buoyant slats chosen for the pool cover modified as described above.
- a horizontally oriented, coupling slot 32 with rounded ends is punched centrally through the horizontal lobe of the hinge plate 31, and a shorter, vertically oriented, coupling slot 33 is punched through the depending vertical lobe of the hinge plate 31.
- the diameter of the longitudinal hinge pins 32 establishes an accommodating greater width for the coupling slots 33 & 34.
- the respective lengths of the coupling slots 33 and 34 are specified to allow the coupled, modified buoyant slats 21, 22, & 23 to pivot and oscillate toward and away from each freely when floating mimicking the functionality and appearance of a conventional longitudinal prong / female prong-receiving channel coupling between the adjacent buoyant slats chosen for forming a pool cover
- a hinge plate 31 is then placed in each hinge bay 27 of modified buoyant slat 21 with a rounded end portion of the horizontally oriented coupling aperture 33 extending into the interior of prong-side flotation chamber 12 of slat 21.
- a second longitudinal pin 32 similarly inserted via the open end of the prong-side flotation chamber 12 of modified buoyant slat 22, is passed through the opposite rounded portion of the coupling slot 33 of each hinge plate 31 received within each hinge bay 27 inside the flotation chamber 12 of modified buoyant slat 22 to pivotally couple the first and second modified buoyant slats together.
- rotating modified buoyant slat 22 horizontally 180° before the simultaneous cutting of the hinge bays switched the hand or parity of that slat so that the female-prong receiving channels sides of modified buoyant slats 21 & 22 are oppositely presented for interleaving onto the cooperating longitudinal coupling prong/structure 13 of the edge buoyant slats of two, preferably horizontal sections of a pool cover (see Figures 5 & 6).
- the third so modified buoyant slat 23 is then aligned adjacent along the juncture of the pinned together modified buoyant slats 21 & 22 with its spaced hinge bays 27 also receiving the hinge plates 31 , this time with a rounded end portion of the vertically oriented coupling slot 34 extending into the prong-side flotation chamber 12 of the third modified buoyant slat 23.
- a third longitudinal pin 31, similarly inserted via the open end of the prong-side flotation chamber 12 of the third modified buoyant slat 23 is passed through the rounded end portion of the vertically oriented coupling slots 34 of the hinge plates 31 inside of the flotation chamber 12 of the third modified buoyant slat 23, pivotally coupling the first, second and third modified buoyant slats 21, 22, & 23 together.
- modified buoyant slat 23 has the same hand or parity as modified buoyant slat 21 so that its female prong-receiving channel 14 is presented for coupling onto the cooperating longitudinal coupling prong/structure 13 of an edge buoyant slat of preferably, a vertical section of a pool cover (see Figures 5 & 6).
- the invented hinge Upon being assembled, the invented hinge provides a pivotal coupling with three angularly spaced, parallel hinge axes, adapted to be coupled, by the remaining longitudinal female prong- receiving channels of the three so modified, longitudinal buoyant slats, to three separate buoyant-slat pool cover sections that can deploy and retract in three different directions, with each pool cover section independently pivotable about a separate, angular spaced, but parallel axis aligned with the longitudinal slats forming the cover.
- the open ends of the flotation chambers of the three modified buoyant slats forming the hinge are closed or stoppered (See U.S. Patent No. 5,732,846, Helge).
- Plugs may also be inserted or formed within the longitudinal (prong-side) flotation chambers 12 of the modified buoyant slats 21, 22 & 23 sandwiching the hinge bays 27 to trap air within the chambers between the bays 27 if is necessary to increase the buoyancy of the invented hinge.
- filling the compromised prong-side flotation chambers 12 of the so modified buoyant slats 21, 22, & 23 with buoyant sealant foam can increase buoyancy of the so modified buoyant slats.
- post assembly, hinge bay plugs, sealant foam or combination thereof would help anchor the longitudinal hinge pins 31 within the respective flotation chambers 12 of the coupled hinge slats.
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Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04810112A EP1680564A4 (en) | 2003-10-31 | 2004-10-29 | A hinge coupling three buoyant-slat pool cover sections |
AU2004286283A AU2004286283B2 (en) | 2003-10-31 | 2004-10-29 | A hinge coupling three buoyant-slat pool cover sections |
CA002542955A CA2542955C (en) | 2003-10-31 | 2004-10-29 | A hinge coupling three buoyant-slat pool cover sections |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US51666403P | 2003-10-31 | 2003-10-31 | |
US60/516,664 | 2003-10-31 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2005042887A2 true WO2005042887A2 (en) | 2005-05-12 |
WO2005042887A3 WO2005042887A3 (en) | 2006-03-02 |
Family
ID=34549560
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2004/036026 WO2005042887A2 (en) | 2003-10-31 | 2004-10-29 | A hinge coupling three buoyant-slat pool cover sections |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1680564A4 (en) |
AU (1) | AU2004286283B2 (en) |
CA (1) | CA2542955C (en) |
WO (1) | WO2005042887A2 (en) |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3613126A (en) * | 1969-10-22 | 1971-10-19 | Robert Granderath | Buoyant cover for a swimming pool |
US4063585A (en) * | 1977-02-14 | 1977-12-20 | Timothy Prescott Stanley | Display assembly and component parts therefore |
DE2947501A1 (en) * | 1979-11-24 | 1981-05-27 | Siegfried 7410 Reutlingen Bauer | RETRACTABLE AND EXTENDABLE COVER, IN PARTICULAR ROLLER SHUTTERS FOR WINDOWS, DOORS, GATES OR THE LIKE. |
CH661420A5 (en) * | 1983-04-11 | 1987-07-31 | Hansrudolf Zollinger | Collapsible table. |
DE3501689A1 (en) * | 1985-01-19 | 1986-07-24 | Helmut Ing.(grad.) 7847 Badenweiler Rathmann | SHUTTER BLINDS |
US5067182A (en) * | 1990-08-03 | 1991-11-26 | Koelsch Lester M | Swimming pool cover |
IT1286983B1 (en) * | 1996-05-29 | 1998-07-24 | Antonio Cittadini | SHUTTER FOR WINDOWS AND FOLDING FOLDING DOORS |
IT1309528B1 (en) * | 1999-07-05 | 2002-01-23 | Antonio Cittadini | DAMPER FOR FOLDING FOLDING DOORS AND WINDOWS |
-
2004
- 2004-10-29 WO PCT/US2004/036026 patent/WO2005042887A2/en active Application Filing
- 2004-10-29 EP EP04810112A patent/EP1680564A4/en not_active Withdrawn
- 2004-10-29 AU AU2004286283A patent/AU2004286283B2/en not_active Ceased
- 2004-10-29 CA CA002542955A patent/CA2542955C/en active Active
Non-Patent Citations (1)
Title |
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See references of EP1680564A4 * |
Also Published As
Publication number | Publication date |
---|---|
EP1680564A2 (en) | 2006-07-19 |
CA2542955C (en) | 2008-04-08 |
AU2004286283B2 (en) | 2008-04-10 |
WO2005042887A3 (en) | 2006-03-02 |
EP1680564A4 (en) | 2010-05-19 |
AU2004286283A1 (en) | 2005-05-12 |
CA2542955A1 (en) | 2005-05-12 |
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