Abstract: A unitary pool cover housing for assembling a pool cover system such that the housing and pool cover system may be substantially assembled at the manufacturing facility and delivered together for quick installation at the pool site.

Abstract: A sheet of flexible material can be deployed or stored by unfurling or furling the sheet using one or more inflatables. After the sheet is deployed to, for example, cover a load on a flatbed trailer, the inflatable can be deflated for storage. A sheet that has been removed from the load can be stored by placing an inflatable along an edge of the sheet. The inflatable is pressurized, and the sheet is furled onto the inflatable by rolling the inflatable. The inflatable is deflated and rolled up with the sheet for storage.

Abstract: A unitary pool cover housing for assembling a pool cover system such that the housing and pool cover system may be substantially assembled at the manufacturing facility and delivered together for quick installation at the pool site.

Abstract: A rolling-unrolling device for a protective cover for covering a surface to be protected is presented. The device is self-propelling and includes a braking system for blocking the rotation of at least one drive wheel of the carriages and causing the cover to be automatically tensioned during the rolling up thereof on the roller tube. This braking system includes a movable pawl integral with each of the carriages, and a ratchet wheel integral with the drive wheel of each of the carriages, such that, in the direction of rotation corresponding to the unrolling of the cover, the pawl is not engaged with the ratchet wheel and the braking system is in the passive position, and in the opposite direction of rotation corresponding to the rolling up of the cover, the pawl is engaged with the ratchet wheel and the braking system is in the active position.

Abstract: A system for repositioning a patient in a bed includes an overlay that is positioned between the patient and the bed mattress. The overlay is wound around a roller that rotates to pull the overlay and the patient to a more upright position on the bed after the patient has slid down the bed. The roller is rotated either manually by a crank or automatically by a motor that is operable using a switch and/or a plurality of sensors.

Abstract: A device (1) for covering a surface is provided. The device includes: (a) a cover (10) of which each longitudinal edge is provided with a bead (12); (b) a rotatably mounted drum (2) capable of winding or unwinding the cover, movable on rails placed on either side of said surface; and (c) a system for continuously locking/unlocking the bead in the rails during the translation of the drum.

Abstract: A floating water mat reel that has a plurality of plates mounted to an axle. A floating water mat is selectively connected to the plates. A crank, connected to the axle is used to rotate the plates so that the mat wraps around the plate.

Abstract: Cover for a swimming pool or whirlpool bath, whereby the cover includes a rollup screen whereby the screen has two side edges and whereby the screen has a first edge perpendicular to the side edges and a second edge perpendicular to the side edges, whereby the cover includes a rollup shaft, whereby the first edge of the screen is connected to the rollup shaft and whereby the screen can be rolled up and rolled out on the rollup shaft, whereby the rollup shaft is horizontally movable so that the screen can be rolled out while the second edge is in a fixed position and whereby the cover is provided with a unit to exert a rotational force on the rollup shaft to thereby roll up the screen.

Abstract: A device for covering a surface and includes: (a) a covering of which each longitudinal edge is provided with a longitudinal strip ending in a flap; (b) a rotatably mounted drum capable of winding or unwinding the covering, and movable on rails placed on either side of said surface; (c) a system for continuous locking/unlocking of the flap in the rails during the translation of the drum, in which the covering includes at least one flap which makes it possible to isolate the portion of the longitudinal strip corresponding to the stuck flap portion, either from the atmosphere contained between the inner surface of the deployed covering portion and the covered surface portion, or from solar radiation.

Abstract: A pool cover winding system has first and second end supports rotatably supporting a shaft for receiving a pool cover wound around it. A bidirectional piston motor operates under control of a valve arrangement connecting a source of water pressure to a first inlet to generate rotation in a first direction for winding a pool cover around the shaft, and to a second inlet to generate rotation in a second direction for unwinding a pool cover from the shaft.

Abstract: Swimming pool recess covers and methods of covering swimming pool recesses, for example, stairwells, are disclosed. The recess covers include a flexible sheet adapted to at least partially cover the recess, and one or more fasteners mounted to an edge of the sheet. The fasteners are adapted to engage a main pool cover. The fastener may be an elongated fastener having a receptacle adapted to receive a projection mounted on the main pool cover. The receptacle may have an opening defined by opposing arms adapted to deflect when contacted by the projection on the main cover. The flexible arms may also include projections that enhance engagement of the receptacle with the projection on the main pool cover. Swimming pool peripheral recess cover fasteners are also provided.

Abstract: An automatic spa or pool cover for covering a spa is described having a retractable frame, which rides along a top surface of the spa, attached to a front edge of an insulated cover. A motorized cover roller attached to a back edge of the insulated cover and functions to roll up and retract the insulated cover and pull the frame to slide along the top lip of the spa side walls to retract the frame. In one embodiment, the frame is spring-loaded and extends from its retracted position to its extended position by the force of the springs. In an alternative embodiment, conventional actuation devices may be used to extend the frame. It also includes a retractable angled top cover covering the retractable frame which is supported by a guide proximate the motorized cover roller.

Abstract: An automatic spa cover for covering a spa is described having a retractable frame, which rides along a top surface of the spa, attached to a front edge of an insulated cover. A motorized cover roller is attached to a back edge of the insulated cover and functions to roll up and retract the insulated cover and pull the frame to slide along the top lip of the spa side walls to retract the frame. In one embodiment, the frame is spring-loaded and extends from its retracted position to its extended position by the force of the springs. In an alternative embodiment, conventional actuation devices may be used to extend the frame. It also includes a retractable angled top cover covering the retractable frame which is supported by a curved guide proximate the motorized cover roller.

Abstract: A floatable flexible sealed waterproof cover for pools, made of a flexible waterproof bottom sheet, a flexible waterproof upper sheet and several rods made of a foam material. The bottom sheet and the upper sheet are welded to each other on their four sides. The upper sheet and the bottom sheet are connected by a number of lines that construct hollow sleeves between them and the rods are inserted into the sleeves.

Abstract: A pool cover system that may include a pool cover; a debris collection unit that is coupled to a front end of the pool cover; and a debris manipulator that is coupled to the debris collection unit and is arranged to move the debris collection unit between a debris collection position and a debris dumping position.

Abstract: A method and system for service-aware parity placement in a storage system, including after receiving the service notification specifying a target SD: writing a RAID stripe to the persistent storage, where the parity block of the RAID stripe is stored on the target SD and none of the data blocks in the RAID stripe are stored on the target SD. The method further includes performing a modified garbage collection operation that includes identifying a live RAID stripe in the persistent storage, writing a new RAID stripe to a new location in the persistent storage, where the new RAID stripe includes a copy of at least a portion of data from the live RAID stripe and a parity block in the new RAID stripe is stored on the target SD, and issuing a removal notification when the modified garbage collection operation is completed.

Abstract: A form is provided for positioning an anchor in a castable material, such as concrete, having a core element defining a volume for creating a recess in the castable material, an anchor having one end positioned inside the core element for engaging a security device, such as a cable or chain, and the anchor having another end extending outside the core element, for fixing the anchor in the castable material, and an elongated drain forming member extending from the bottom of the core element to the ground, for creating a passageway for transporting water that collects in the recess.

Abstract: An automatic system for locking and unlocking a pool cover having a leading edge at an edge of a pool, the pool having a water surface, the pool cover deployable by a pool cover deployment system, the automatic system comprising: at least one leading edge slot piece having a rectangular slot therein, the leading edge slot piece integratable into the leading edge; at least one float locker subassembly configurable floatably on the water surface and constrained at the edge of the pool, the float locker subassembly having a space defined therein in which the at least one leading edge slot piece is adapted to be received, locked, and unlocked; and an autolock control unit adapted to communicate with the at least one float locker subassembly and the pool cover deployment system, wherein the control unit is further adapted to command and verify locking and unlocking.

Abstract: A splicing apparatus for interconnecting tubes may include: a first longitudinally elongate structure including a first radially outer surface and a first radially inner surface; a second longitudinally elongate structure including a second radially outer surface and a second radially inner surface, the first and second structures being configured to be arranged with the first and second inner surfaces facing each together and the first and second outer surfaces defining an equivalent diameter; and at least one movable element configured to engage the first and second inner surfaces, whereby movement of the at least one movable element changes a relative position of the first and second structures thereby changing the equivalent diameter defined by the first and second outer surfaces. A kit for a pool cover assembly may include first and second tubes and a splicing apparatus configured to interconnect the tubes.

Abstract: The present invention relates to a device for covering a surface comprising a drum mounted to rotate and able to wind up or unwind a cover.

Abstract: A device for facile deployment of a flexible pool cover, and methods of use, are described. Embodiments of the device and methods of use enable deployment of a pool cover with a leading edge of the pool cover being propelled substantially evenly across a liquid surface of a pool.

Abstract: The present invention relates to a system for sequentially supporting, opening and closing a pool-deck lid covering below-deck troughs housing coordinated with the operation of powered pool cover systems housed in the troughs. In certain embodiments the system comprises in combination: a front, longitudinal seating structure, an upwardly movably, cantilever bracket structure, hydraulic/pneumatic means, and a hydraulic/pneumatic actuation control means.

Abstract: The invention relates to a device for covering a surface such as a swimming pool, a sports field, a glazed surface, a vehicle body, including: (a) a drum rotatingly mounted and capable of winding or unwinding a cover, said drum being mounted on longitudinal translation mechanisms including rails provided on either side of said surface; (b) an attachment system for said cover at one transverse end of the surface to be covered so that the translation and the rotation of the drum results in the winding/unwinding of the cover above the surface to be covered; (c) a system for continuously locking the longitudinal edges of the cover onto said rails that is progressively fitted during the unwinding operation.

Abstract: The drive device, which serves for the transport of the cover of a liquid container, particularly a swimming pool, is installed or installable in device compartment, which is arranged separate from the liquid container. The drive device includes at least one winding shaft that interacts with the cover and that is coupled to a first drive unit. The winding shaft serves for the rolling-up of the cover, which can be guided over a deflection device to an outlet opening of the device compartment and, at the end facing the winding shaft, is connected to an outer tractive element, which is acting against the side of the cover that is opposite to the side which faces the deflection device, which outer tractive element presses cover under tension against the deflection device, and which outer tractive element is held and can be tensioned by a first traction device.

Abstract: Disclosed is a floating pool cover extender having a rigid, buoyant end connector that is adapted to connect to the leading edge of a pool cover and provide a uniform means of drawing the cover across a pool surface from a single point around the pool perimeter. The device comprises a buoyant, tubular attachment that clamps onto a pool cover leading edge that connects to a series of straps to create a rigging, which forms into a single pool cover tether for the user to pull when deploying the cover. The tether is an elongated section of material that is pulled by a single user, wherein the rigging and tubular attachment distributes tension uniformly along the pool cover leading edge. The trailing edge of the cover may be unfurled from a roll or alternatively deployed from a stacked configuration, wherein the trailing edge may also include a buoyant tubular attachment.

Abstract: Systems and methods for covering a manmade pool (10) are disclosed. The system comprises an insulating cover (12) and a roller (14) positioned along at least one edge of the pool (10), wherein the roller is attached to at least one edge of the insulating cover (12) and the insulating cover is capable of being wound upon the roller (14). In an embodiment, the system further comprises a guide (18) capable of guiding at least one leading edge of the insulating cover (20) across the pool (10), such that the insulating cover can be moved from an open position, with the insulating cover wound around the roller (14), to a closed position, with the insulating cover secured over the pool. In some embodiments, the insulating cover (12) further comprises reinforcing material that adds sufficient strength to the cover that when in the closed position over the pool, the cover can support the weight of at least one adult human.

Abstract: Photodynamic therapy of conditions of the eye, especially those conditions characterized by unwanted neovasculature, such as age-related macular degeneration, results in enhanced visual acuity for treated subjects.

Abstract: An apparatus and method for minimizing entanglement and bunching of a retracting or extending cable (10, 11) for a swimming pool cover, comprises a shaft (4) with a roller (5, 6) to guide the cable. The roller slidably rotates on the shaft so that it rotates and moves axially in response to any forces provided by the cable when being retracted or extended, to minimize entanglement and bunching.

Abstract: The present invention generally relates to an apparatus and a method for tensioning a safety net on a swimming pool. In one aspect, a tension apparatus for use with a pool net is provided. The apparatus includes a housing and a selectively engagable gear arrangement disposed in the housing. The apparatus further includes a rotatable member for supplying rotational energy to the gear arrangement and a spool member operatively attached to the gear arrangement. Additionally, the apparatus includes a cable at least partially wrapped around the spool member, wherein the cable includes a connector configured to connect to the pool net. In another aspect, a method for tensioning a pool net is provided. In yet another aspect, an apparatus for use in tensioning a net is provided.

Abstract: A pool cover assembly for covering a swimming pool includes a cover, a pool cover box, and a reel positionable within the pool cover box and configured for carrying the cover. The reel includes a tube and an end piece. The tube includes an end with at least one keying feature and the end piece includes at least one mating keying feature. The keying feature and the mating keying feature coact to allow relative axial movement between the tube and the end piece, but not allow relative rotational movement between the tube and the end piece.

Abstract: A pool blanket reel assembly is provided that includes a motor base, an idler base, a roller bar, a motor bracket, a motor, an idler bracket, an idler hub, a power supply, a switch, a remote control, and a remote control timer.

Abstract: Disclosed and described is a rotating access cover assembly that may be utilized to cover a storage chamber such as those that store swimming pool covers. In a swimming pool setting, the access cover assembly allows complete access to the storage chamber by the swimming pool cover, which extends the width of the swimming pool. Allowing such access to the chamber, the access cover assembly provides support so that users may walk and sit on the edge of the pool and the edge of the access cover assembly. The access cover rotates to an open position to allow access to all or part of the storage chamber of the swimming pool cover.

Abstract: A reel locking system includes a reel arranged to collect a cord from an enclosure system. A ratchet drum has teeth and is positioned proximate to the reel. A pawl assembly is pivotally attached to the reel. The pawl assembly has a pawl arranged to move between an engaged position in which the pawl drivingly engages a tooth of the ratchet drum and a ratchet position in which the pawl ratchets over the teeth. A lever is attached to the reel and is operable to lock the pawl in the engaged position and inhibit movement of the pawl to the ratchet position.

Abstract: Invented techniques and associated mechanisms are described for passively assuring that the spiraling layers of wound-up layers of a buoyant pool cover are, and will remain tightly wound around a rotatable cover drum completely submerged in a pool bottom tough.

Abstract: Invented techniques and associated mechanisms are described for eliminating bi-directional flexure properties of coupled buoyant-slats forming a pool cover while simultaneously increasing the buoyancy of a leading or front portion of the cover and for assuring that the spiraling layers of wound-up layers of a buoyant pool cover are, and remain tightly wound around a submerged, rotatable cover drum at all times.

Abstract: Apparatus for extending and retracting a cover for a swimming pool includes a motor for selectively rotating a clutch in one direction or the other direction. A first pawl, extending within the clutch, drives a first cam to cause rotation of a set of pulleys for winding cords thereabout to extend the cover from about a roller and a second pawl, extending within the clutch, drives a second cam to cause rotation of the roller to wrap the cover thereabout. First and second lift arms lift the first and second pawls out of engagement with the first and second cams, respectively as a function of the direction of rotation of the clutch to ensure that only one of the first and second cams is rotated by the clutch. A cylinder mounted on a shaft in engagement with the armature of the motor is in frictional contact with spring loaded brakes within the clutch to transfer rotational movement of the armature to the clutch.

Abstract: A system is provided herein for supporting a lid for a pool cover box that includes (a) an elongated mounting element extending along substantially at least one wall of the pool cover box, and (b) a plurality of bracket assemblies, each adapted for connecting to the mounting element at multiple positions along the mounting element to support the lid.

Abstract: The present invention is a modular lid system for an underwater swimming pool cover or other underwater enclosure. The modular lid has a rigid lid portion which has an overall buoyancy such that the lid portion closes the enclosure underwater by force of gravity. The modular lid system also has a remote power pack for providing a source of hydraulic power to the modular lid. The remote power pack is located at a position remote from the swimming pool. The remote power pack includes a hydraulic pump and a hydraulic drive mechanism is actuated by the remote power pack. The drive mechanism has a predetermined range of movement. A decoupled linkage mechanism extends between the hydraulic drive mechanism and the lid portion for causing limited opening movement thereof. The limited opening movement corresponds to the predetermined range of movement of the hydraulic drive mechanism.

Abstract: A track assembly for flexible pool covers. The track assembly includes track members, and securing pieces for being secured to the pool deck and for splicing the track members together in an end-to-end series. The securing pieces are designed to reside beneath, and to be concealed by, the tracking members. The securing pieces may be attached to a pool deck with fasteners, after which the track members may be snapped downwardly onto the securing pieces to thereby secure the track members to said securing pieces. The track members conceal the securing pieces, and the fasteners that secure the securing pieces to the pool deck, thereby providing an aesthetic appearance of continuous tracking uninterrupted by fasteners, fastener holes, or other through holes. This arrangement prevents the fasteners from coming loose and posing a risk to barefooted bathers, because the upward movement of the fasteners is inhibited by the track members that reside above the fasteners.

Abstract: An invented dual, coupled check valve mechanism is described for a direct drive, reversible hydraulic power source for hydraulic circuits that includes a manifold hydraulically coupled to the respective input/output ports and a reservoir of the hydraulic power source defining a translation passageway having mid-passage drain hydraulically coupled to the reservoir, where each end of the translation passageway has an angled annular valve seat opening to larger diameter plenum containing a check valve ball. A translating rod with a length greater and a circumferential diameter less than that of the translation passageway located in the translation passageway prevents the respective check valve balls from simultaneously seating on the valve seats at the respective ends of the translation passage way.

Abstract: Mounting apparatus is provided for a pool cover assembly having a plurality of pool cover components disposed in a pool cover box and used to operate a pool cover for a swimming pool. The mounting apparatus comprises an elongated member adapted to be attached to the pool cover box, and a mounting member adapted to removably couple at least one of the pool cover components to the elongated member. A method is provided for mounting a pool cover assembly having a plurality of pool cover components in a pool cover box for a swimming pool cover. The method comprises attaching an elongated member to the pool cover box, and removably coupling a mounting member supporting at least one of the pool cover components to the elongated member.

Abstract: System and method for monitoring a working status of a swimming pool cover assembly. The system comprises a pool cover assembly operably connected to an alarm apparatus; both may be operably connected to a plurality of sensors capable of detecting a working status of the pool cover assembly and sending a signal to the alarm apparatus. The alarm apparatus continually produces at least one humanly perceptible indication corresponding to a working status of the pool cover assembly. The alarm apparatus includes at least one alarm-producing device, such as an audio or visual device, or combination of the two, a receiver operably connected to the plurality of sensors for receiving the signals, a processor operably coupled with the receiver for processing and recognizing the received signals, and software operably coupled with the processor enabling the alarm-producing device to produce the humanly perceptible indication corresponding to the recognized signal.

Abstract: Box apparatus is provided for containing a pool cover assembly to cover a swimming pool, comprising an elongated plastic box. The box apparatus comprises a plurality of sections of substantially identical unitary molded plastic members, a plurality of coupling elements to couple the sections together to form an elongated box with two sides, a bottom, an open top and at least one open end, and an end piece fastened to the box to close the open end. A method is provided for forming a pool cover box to contain a pool cover assembly for covering a swimming pool, comprising forming an elongated plastic box.

Abstract: An invented fluidic (hydraulic/pneumatic) actuation system is described wherein bidirectional, hydraulic/pneumatically driven elements of multiple components in a common hydraulic/pneumatic circuit inherently provide increases in pressure upon reaching mechanical end points limiting, arresting or stopping further mechanical movement or travel of the driven element of any particular component that switches a sequencing valve system and/or electro-hydraulic/pneumatic pressure switches for directing hydraulic/pneumatic power to other hydraulically/pneumatically driven components in the hydraulic/pneumatic circuit in a timed, sequenced and velocity controlled manner.

Abstract: A system and method that improves the interconnection between a pool cover and a storage reel so that the pool cover can more readily be wound on the storage reel in an even manner. The system includes at least one rigid plate that is attached to an edge of the pool cover. The rigid plate can be either manufactured into the structure of the pool cover or retroactively added to the edge of the pool cover. A mechanical fastening system is provided that enables the rigid plates at the edge of the pool cover to be attached to the storage reel so that the edge of the pool cover is held parallel to the axis of rotation for the storage reel. In this manner, the edge of the pool cover is automatically aligned with the storage reel by attaching the rigid plate to the storage reel.

Abstract: An elongated roller shutter profile of plastic or metal for swimming pool covers has a water-proof closure that closes an end of at learnt one longitudinal hollow chamber of the roller shutter profile. The closure includes a cap at least partly inserted from the end into the chamber, a piston plate spaced from the cap, and a sealing body between the cap and the piston plate. The sealing body made of an elastic and/or plastic material is brought into a sealing state by clamping between the piston plate and the cap so that the sealing body expands in width and rests in a circumferentially tight manner on the inner walls of the hollow chamber.

Abstract: A lid support bracket assembly for supporting a pool cover box lid includes a wall mount and a bracket angularly adjustably coupled to the wall mount.

Abstract: The present invention 10 discloses a pair of end heads 28, 30 that are interconnected onto the inwardly disposed tube assembly 26 to form the pool cover 12 storage reel. Hand wheels 32 are rotationally attached to tube assembly 26 by end tubes 36 on the outside of the end heads 28, 30. Each of the end heads 28, 30 includes a pair of casters 40 mounted to the bottom surface of the end head. The tube assembly 26 consists of five components, a center tube 34, two outer tubes 36 and two end caps 42. The center tube is of larger diameter and allows for the two outer tubes to be telescopically inserted into the opposing distal ends. The cylindrically shaped tubes include mating male 48 and female 46 extrusions along the surfaces to ensure joint rotational movement of the tube assembly.

Abstract: A walk-on tray apparatus for concealing a pool cover operation system, is disclosed. A plurality of brackets each having a load-bearing upper portion may be attached to a sidewall of an elongate recess formed at one end of a pool, such that the load-bearing upper portions of the brackets extend in a substantially horizontal orientation. A plurality of platform sections each include a mortar veneer, a tray with an attachment plate removably disposed beneath an under side of the tray, and a nut-tightening arrangement, such that the load-bearing upper portions may be securely sandwiched between the under side of the tray and the attachment plate. The platform sections may reside in a side-by-side, sequential series. The mortar veneer may be formed directly on the tray, and the facade may be modified and customized to match the appearance of the perimeter sections of a pool deck. The veneer may be composed of mortar, resin and negligible amounts of fiberglass particles, forming an elastic composition.

Abstract: A prefabricated pad for a pool and its associated method of installation under the liner of an above-ground pool. The prefabricated pad is interposed between the ground surface and the pool liner, wherein the prefabricated pad cushions the pool liner, reduces contact stresses against the pool liner and prevents the pool liner from being punctured by any object present below the pool. The prefabricated pad also supports the pool liner as the pool liner turns from the vertical walls of the pool to the flat bottom of the pool.