Including Water Inlet Or Outlet Means Patents (Class 4/507)
  • Patent number: 6397408
    Abstract: A ramped cap unit is provided for installation into a swimming pool in a position covering a main pool drain equipped with an upstanding antivortex safety drain cover plate, wherein the ramped cap unit has a smoothly contoured shape to permit a pool cleaner device to travel thereover without interrupting or obstructing cleaning operation. The cap unit comprises a generally inverted saucer defining a smoothly sloping and convex or ramped upwardly presented surface having a diametric size and shape to fit over the safety drain cover plate. An array of ribs formed on the underside of the cap unit engage an outer periphery of the upstanding cover plate to retain the cap unit in position thereon. A large plurality of vents are formed in the cap unit at spaced-apart locations to permit downward water flow therethrough substantially without disrupting the antivortex and safety functions of the underlying drain cover plate.
    Type: Grant
    Filed: July 17, 2000
    Date of Patent: June 4, 2002
    Assignee: Polaris Pool Systems, Inc.
    Inventors: Thomas E. Veloskey, Jeffrey A. Wichmann
  • Patent number: 6393628
    Abstract: A valve assembly (23) for use with automatic swimming pool cleaners which is arranged in a skimmer and in series with the suction pipe (22) to the pool cleaner. It includes a branch passage provided with a biased pivoting flap valve (31) opening in accordance with the pressure demands in the system to relieve pressure and provide constant suction to the cleaner and permits the skimming action of the skimmer to continue whilst the swimming pool cleaner is operating. The bias is provided by a coil or leaf spring or an arcuate compression coil spring located substantialy within the passage. Two flap valves (optionally with different surface areas and spring constants) may be provided and optionally angled to the passage when closed. Hinge pins of the flap may snap fit into open sided sockets in the branch passage wall.
    Type: Grant
    Filed: November 30, 2000
    Date of Patent: May 28, 2002
    Inventor: James Edward Kellogg
  • Patent number: 6393631
    Abstract: A pool drain safety cover system and method. The system includes a base defining at least one primary fluid aperture and a plurality of secondary fluid apertures. The cover also includes a grating extending across at least the primary fluid aperture for permitting the passage of drain water therethrough. The grating has at least an upper and a lower layer. The upper and lower layers are adjacent, and each is comprised of a plurality of spaced ribs for permitting the passage of fluid in a clearance space between the ribs.
    Type: Grant
    Filed: May 16, 2001
    Date of Patent: May 28, 2002
    Inventor: Ronald Schroader
  • Patent number: 6367100
    Abstract: A waterfall apparatus comprising a water confining base, said base including a bottom and a plurality of upwardly extending side walls connected to said bottom; a water inlet connected to said base for providing a path of travel for water entering said base; a water outlet connected to said base, said water outlet including an upper lip connected to at least a first one of said plurality of side walls and extending outwardly therefrom, and a lower lip spaced apart from said upper lip, connected to at least to a second one of said plurality of side walls, and extending outwardly therefrom so that water positioned within said base flows between said upper and lower lips and outwardly and downwardly therefrom; a water flow guiding arm connected to said base and extending downwardly at a predetermined angle therefrom into the inner confines of said base to provide a water flow path of travel from said water inlet, around said guiding arm and from said water outlet, the predetermined angle being less than 90 degre
    Type: Grant
    Filed: December 19, 2000
    Date of Patent: April 9, 2002
    Inventors: Pinhas P. Koren, Richard Heiner
  • Patent number: 6360379
    Abstract: A cover for a housing—and particularly for a swimming pool drain—is lockable by a bridge having downwardly extending upper arms and upwardly extending lower arms that are drawn towards one another by a bolt passing through threaded upper and lower hubs for the arms and having a first thread along an upper substantially one-half length thereof and a second opposing thread along a lower substantially one-half length thereof, with the bridge also having bearing feet pivotally connected between adjacent facing ends of the arms to exert increasing pressures against inside surfaces of the housing as the arms are drawn towards one another in securing a rested cover for the housing into a lock position.
    Type: Grant
    Filed: November 16, 2000
    Date of Patent: March 26, 2002
    Inventors: Russel Lane, Andrew C. Quinn
  • Publication number: 20020016987
    Abstract: The present invention a modified skimmer lid for use with a pool pump assembly having a pump, a skimmer chamber and a removable skimmer lid for the skimmer chamber, the modified skimmer lid comprises a skimmer lid base adapted to seal and mate with said skimmer chamber, a compressed air inlet integrally part of said modified skimmer lid for communicating and introducing compressed air into said skimmer chamber and for purging existing pool lines with compressed air, such that existing water lines need not be disturbed or removed.
    Type: Application
    Filed: July 12, 2001
    Publication date: February 14, 2002
    Inventor: Paul Whatmore
  • Patent number: 6340035
    Abstract: An apparatus for and a method of forming a surface finish on a top surface of a drain cover for swimming pools or spas so that the surface finish of the drain cover matches the surface finish of the pool or spa. The apparatus comprises a ring shaped structure that is adapted to be positioned on the top surface of the drain cover wherein the ring is mounted along the general outer perimeter of the top surface of the drain cover. An exposed aggregate or plaster finish is then formed on the top surface of the cover enclosed by the ring so that the ring retains and shapes the surface finish.
    Type: Grant
    Filed: March 5, 2001
    Date of Patent: January 22, 2002
    Inventor: James R. Wright
  • Publication number: 20010042266
    Abstract: A pool drain safety cover system and method. The system includes a base defining at least one primary fluid aperture and a plurality of secondary fluid apertures. The cover also includes a grating extending across at least the primary fluid aperture for permitting the passage of drain water therethrough. The grating has at least an upper and a lower layer. The upper and lower layers are adjacent, and each is comprised of a plurality of spaced ribs for permitting the passage of fluid in a clearance space between the ribs.
    Type: Application
    Filed: May 16, 2001
    Publication date: November 22, 2001
    Inventor: Ronald Schroader
  • Patent number: 6295661
    Abstract: An automatic shut-off valve for installation on a sing pool or spa main drain. The automatic shut-off valve has a soft gasket, ball, and ball spring between a grate and a housing. The grate is free to reciprocate up and down relative to the housing. Downward reciprocation of the grate urges the ball into sealable engagement with a valve seat in the housing. During operation, a swimmer covers sufficient grate apertures so that the grate is moved downwards as urged by the main drain suction, towards a swimming pool or spa main drain over which the automatic shut-off valve is mounted. The downward motion of the grate urges the ball into sealable engagement with a valve seat in the housing, where it is securely held by the main drain suction. In this fashion, the ball is entrapped instead of the swimmer, thus avoiding possible disembowelment and/or drowning on the part of the swimmer.
    Type: Grant
    Filed: June 15, 2000
    Date of Patent: October 2, 2001
    Inventor: Arthur J. Bromley
  • Publication number: 20010018776
    Abstract: A waterfall apparatus comprising a water confining base, said base including a bottom and a plurality of upwardly extending side walls connected to said bottom; a water inlet connected to said base for providing a path of travel for water entering said base; a water outlet connected to said base, said water outlet including an upper lip connected to at least a first one of said plurality of side walls and extending outwardly therefrom, and a lower lip spaced apart from said upper lip, connected to at least to a second one of said plurality of side walls, and extending outwardly therefrom so that water positioned within said base flows between said upper and lower lips and outwardly and downwardly therefrom; a water flow guiding arm connected to said base and extending downwardly at a predetermined angle therefrom into the inner confines of said base to provide a water flow path of travel from said water inlet, around said guiding arm and from said water outlet, the predetermined angle being less than 90 degre
    Type: Application
    Filed: December 19, 2000
    Publication date: September 6, 2001
    Inventors: Pinhas P. Koren, Richard Heiner
  • Patent number: 6276200
    Abstract: A liquid level control system utilizes a sensor that is attached to a fixed support relative to a liquid container and transmits radio-frequency signals to a remotely located liquid supply system depending upon fluctuations in the liquid level. In the context of a swimming pool, the sensor housing is attached to a sidewall of the pool, at the desired water level. A sensor circuit located within the housing floats at the liquid level, and as changes occur, movement of the floating sensor results in the transmission of signals to either activate or deactivate a supply valve that supplies replacement water to the pool. A small opening located at an upper portion of the sensor housing cooperates with the floating sensor to dampen the motion of the sensor, providing a more accurate reading of the liquid level.
    Type: Grant
    Filed: December 1, 1999
    Date of Patent: August 21, 2001
    Inventor: Michael L. Cazden
  • Publication number: 20010013373
    Abstract: An apparatus for and a method of forming a surface finish on a top surface of a drain cover for swimming pools or spas so that the surface finish of the drain cover matches the surface finish of the pool or spa. The apparatus comprises a ring shaped structure that is adapted to be positioned on the top surface of the drain cover wherein the ring is mounted along the general outer perimeter of the top surface of the drain cover. An exposed aggregate or plaster finish is then formed on the top surface of the cover enclosed by the ring so that the ring retains and shapes the surface finish.
    Type: Application
    Filed: March 5, 2001
    Publication date: August 16, 2001
    Inventor: James R. Wright
  • Patent number: 6233754
    Abstract: A swimming pool includes a swimming tank, which stores water for swimming; and an upstream tank, which stores water to be supplied into the swimming tank. The pool further includes a downstream tank, which stores the water streamed from the upstream tank through the swimming tank; and a pump, which forces the water stored in the downstream tank to the upstream tank. The water in the upstream tank has an energy head that is higher than the water in the swimming tank so as to generate water current in the swimming tank.
    Type: Grant
    Filed: April 19, 2000
    Date of Patent: May 22, 2001
    Assignee: Rika Kogyo, Inc.
    Inventor: Toshio Ajima
  • Patent number: 6230337
    Abstract: An anti-vacuum drain cover is defined by a centrally supported grating together with at least one outwardly extending tributary tube. When the grating is obstructed, the fluid may still be suctioned through at least one tributary tube preventing the formation of vacuum conditions within the main drain. The outboard end of the tributary tube may be fashioned in an irregular pattern to preclude deliberate blockage with one's hand. The grating may further incorporate an anti-hair entanglement design, such as self shedding cantilever elements, which provide anti-hair snare properties. The tributary tubes may be straight or curved with sufficient length to minimize hair entanglement through the tributary tubes. The outboard ends of the tributary tubes may also be located sufficiently far from the grating to eliminate the possibility of simultaneously blocking all suction sites with a single body.
    Type: Grant
    Filed: February 8, 2000
    Date of Patent: May 15, 2001
    Inventor: Ralph L. Barnett
  • Patent number: 6231938
    Abstract: Multilayer polymeric shells for spas, bathtubs and shower enclosures having a textured and marbled surface layer. The shells are produced by forming by extrusion a multilayer polymeric sheet having a marbled appearing top layer, passing the sheet between rollers to impart a textured surface to the marbled top layer of the sheet, and thermoforming the sheets into the structural shells for spas, bathtubs and shower enclosures.
    Type: Grant
    Filed: July 2, 1993
    Date of Patent: May 15, 2001
    Assignee: Watkins Manufacturing Corporation
    Inventors: Gary L. Gockel, Kathy L. Pratschner, Steven M. Hammock
  • Patent number: 6223359
    Abstract: An automatic water level system having a pair of micro-switches nested within a substantially cylindrically shaped primary housing having a first and second end for electrical lead lines. The primary housing is disposed within a cavity of a substantially cylindrical, T-shaped secondary housing or baffle including a mounting assembly. Each electrical lead line is a water resistant control line, which extend from an end of the pair of micro-switches disposed within the primary housing to a remote control unit via the first and second ends. The control lines are optionally recessed within a cavity of the secondary housing for connection to a remote control unit, which activates a fluid supply valve and/or a drain valve. The secondary housing further includes a first and second cap having concentric apertures and the respective caps are removably secured to the housing.
    Type: Grant
    Filed: February 23, 2000
    Date of Patent: May 1, 2001
    Inventors: Lonny W. Oltmanns, Randy J. Garcia
  • Patent number: 6214217
    Abstract: A skimmer screen for a swimming pool for preventing the circulating system of the swimming pool from being clogged due to debris and objects. The skimmer screen for a swimming pool includes a mounting bracket which is adapted to securely mount to a side wall of a swimming pool above a skimmer outlet port to the skimmer system; and also includes a supporting frame having an upper portion with a first opening therethrough and having a lower portion with a second opening therethrough and also having a pair of flange members each having a plurality of screen-mounting members securely disposed thereon; and further includes a screen member which is laterally curved and has a plurality of holes spaced along a perimeter of either side of the screen member with the holes being adapted to removably receive the screen-mounting members.
    Type: Grant
    Filed: January 31, 2000
    Date of Patent: April 10, 2001
    Inventor: Leamon V. Sliger, Jr.
  • Patent number: 6210568
    Abstract: A combination skimmer and waterfall apparatus for use with a pool or spa. A skimmer is provided with a waterfall supply opening operable to deliver a flow of waterfall water into the skimmer interior at a location above the surface of the water of the pool or spa. A channel, preferably attached to a lid of the skimmer, directs the flow of waterfall water from the waterfall supply opening to a location proximate a top portion of the skimmer inlet opening to the pool or spa. The flow of waterfall water is then directed downward to form a pleasing waterfall effect in front of the skimmer. A source of light may be disposed within the skimmer interior to provide a back light for the waterfall. The width of the waterfall may be somewhat less than the width of the skimmer inlet opening. Waterfall operation and flow rate may be controlled independently from the normal recycle flow through the pool/spa pump and filter.
    Type: Grant
    Filed: April 6, 2000
    Date of Patent: April 3, 2001
    Assignee: Leisure Bay Industries, Incorporated
    Inventor: Gary Robert Harder
  • Patent number: 6209586
    Abstract: An apparatus for and a method of forming a surface finish on a top surface of a drain cover for swimming pools or spas so that the surface finish of the drain cover matches the surface finish of the pool or spa. The apparatus comprises a ring shaped structure that is adapted to be positioned on the top surface of the drain cover wherein the ring is mounted along the general outer perimeter of the top surface of the drain cover. An exposed aggregate or plaster finish is then formed on the top surface of the cover enclosed by the ring so that the ring retains and shapes the surface finish.
    Type: Grant
    Filed: December 1, 1999
    Date of Patent: April 3, 2001
    Inventor: James R. Wright
  • Patent number: 6192528
    Abstract: A drain for a swimming pool. The pool has an opening adjacent a lower surface of the pool and a plug on an inner surface of the pool to close or open the drain. A hose is connected at one end to the opening adjacent a lower surface of the pool and the other end of the hose has a discharge tray connected thereto.
    Type: Grant
    Filed: March 3, 2000
    Date of Patent: February 27, 2001
    Inventor: Marie F. Martinez
  • Patent number: 6170094
    Abstract: An artificial waterfall apparatus and method for providing a sheet-like waterfall at the edge of a pool, spa, or fountain, for example, includes a first elongate chamber into which water flows perpendicularly to the length of this chamber, and in which a pair of oppositely directed like-rotating helical recirculation water flows are formed to sweep air and debris to opposite ends of the first chamber, while also contributing to uniformity of water distribution, pressure, and flow velocity in the apparatus. Air is discharged from the apparatus near one of the opposite sides of the waterfall so that the main central body of the waterfall is not disturbed by air bubbles. A second chamber receives water flow from the first chamber, and includes a flow distribution member which further contributes to uniformity of water flow in the apparatus.
    Type: Grant
    Filed: January 7, 1998
    Date of Patent: January 9, 2001
    Assignee: Thermocraft Ind. Inc.
    Inventors: Gary K. Weise, Richard J. Kesl, Fred C. Lesikar
  • Patent number: 6170095
    Abstract: A main drain safety grate apparatus utilizes an elongate drain, frame and grate that distribute the suction flow of water over a large surface to avoid full blockage of the grate, and also utilizes a bendable or deformable, upwardly releasable grate that has a section slotted to permit water to drain therethrough. The grate is ordinarily restrained from upward movement by a slot in each end of the frame into which the ends of the grate fit, and from downward movement by two shelves on which the grate may be supported. The grate may be released from the frame by an upward force applied at the section provided for drainage, which bends, or bows, the grate in an arcuate shape, and acts to shorten the length of the grate relative to the slots into which it is fitted.
    Type: Grant
    Filed: June 16, 1998
    Date of Patent: January 9, 2001
    Inventor: Leif Alexander Zars
  • Patent number: 6158064
    Abstract: A water level adjustment device including a reservoir positioned within a hole formed adjacent to an in-ground swimming pool. The reservoir has an opening therein for coupling with a water supply line. An outlet pipe extends between the reservoir and the swimming pool. The outlet pipe is disposed below the water supply line. A water shut-off valve is coupled with the water supply line inwardly of the reservoir.
    Type: Grant
    Filed: March 5, 1999
    Date of Patent: December 12, 2000
    Inventor: Maurice George Downs
  • Patent number: 6151726
    Abstract: A swimming pool includes a swimming tank, which stores water for swimming; and an upstream tank, which stores water to be supplied into the swimming tank. The pool further includes a downstream tank, which stores the water streamed from the upstream tank through the swimming tank; and a pump, which forces the water stored in the downstream tank to the upstream tank. The water in the upstream tank has an energy head that is higher than the water in the swimming tank so as to generate water current in the swimming tank.
    Type: Grant
    Filed: April 20, 1999
    Date of Patent: November 28, 2000
    Assignee: Rika Kogyo, Inc.
    Inventor: Toshio Ajima
  • Patent number: 6138294
    Abstract: Apparatus for pumping and filtering water from a swimming pool that includes a caisson that is divided into three compartments. A filtering unit is contained in one compartment (A) and contains pool water to be filtered. An adjacent compartment (B) contains a pump having a inlet connected to the filtering unit. Compartment (B) communicates with a third compartment (C). A cover encloses the three compartments and has perforations that permit cooling air to enter compartment (C) and thus pass into compartment (B) to cool the pump. Water passing into compartment (C) is passed to a sanitary drain.
    Type: Grant
    Filed: July 22, 1999
    Date of Patent: October 31, 2000
    Assignee: Piscines Desjoyaux S.A.
    Inventors: Jean Louis Desjoyaux, Pierre Louis Desjoyaux, Catherine Jandros
  • Patent number: 6088842
    Abstract: A drain structure for disposal with a pool or hot tub where suction or vacuum forces are normally present. The drain has interiorly a plurality of grating members having lower surfaces adapted to facilitate release of entangled hair. In certain embodiments, the grating elements are cantilevered from the inner wall of the drain and having tapered lower release surfaces. In another embodiment, the lower surfaces comprise share lower edges for severing entangled hair.
    Type: Grant
    Filed: April 3, 1998
    Date of Patent: July 18, 2000
    Inventor: Ralph L. Barnett
  • Patent number: 6080324
    Abstract: An improved filtering device for a swimming pool surge pit is provided. The filtering device includes a frame with first and second filter elements removably mounted in the frame such that water flows through both elements to remove debris before the water enters a water supply line leading to the main filtration system of the pool. The filter elements slide along guide tracks in the frame and are independently removable such that one filter element is always in place. Thus, the water in the surge pit is filtered 100% of the time before passage into the water supply line. The filter elements extend above the water level in the surge pit such that both floating and submerged debris are captured by the filter elements.
    Type: Grant
    Filed: January 20, 1999
    Date of Patent: June 27, 2000
    Assignee: Sentry Valve Co., Inc.
    Inventor: Mark G. Pleva
  • Patent number: 6066253
    Abstract: A pool or spa filter comprising a filter unit having porous filter wall structure to pass pool or spa water into the filter unit interior, the unit having a suction outlet; a perforated cover plate in water-passing registration with the outlet; the filter unit and cover plate being endwise interconnected and blocked against endwise inadvertent disconnection.
    Type: Grant
    Filed: May 26, 1998
    Date of Patent: May 23, 2000
    Assignee: Softub, Inc.
    Inventors: Carsten H. Idland, John J. Nelson
  • Patent number: 6038712
    Abstract: A suction assembly employs an air induction tube to induct air into the recirculating water pump to cause the pump to cease pumping operation when the front face of the assembly is blocked. The induction tube is connected to a bleed path formed between the induction tube and a surrounding coaxial face tube extended into the assembly from the front face. When the face is blocked by hair or the like, water in the induction tube bleeds into the main chamber of the assembly and empties the induction tube. Air is then pulled into the pump, causing the pump to lose prime thereby reducing pump pressure to zero and allowing the hair or other blocking material to be removed. In a preferred embodiment, the induction tube is connected to the air inlet of at least one venturi-type hydromassage jet assembly. The suction assembly employs a spring-loaded induction stem which bears compressively against the interior face of the suction cover, thereby permitting use of conventional suction covers.
    Type: Grant
    Filed: October 8, 1997
    Date of Patent: March 21, 2000
    Assignee: Hydrabaths, Inc.
    Inventors: Philip E. Chalberg, Patrick B. Healy
  • Patent number: 6029290
    Abstract: An invention utilizing a conveyor belt to remove debris from a swimming pool filtration system skimmer and deposit it into a waste receptacle. The lower end of the conveyor belt is inserted into the skimmer below the level of the water. As the conveyor belt is rotated, it removes debris from the skimmer to a point outside the skimmer where the conveyor belt deposits it into a receptacle.
    Type: Grant
    Filed: October 26, 1998
    Date of Patent: February 29, 2000
    Assignee: Skimmer Valet, Inc.
    Inventors: Greg Butcher, Randy Smith
  • Patent number: 6022481
    Abstract: A swimming pool cleaning system includes a pump, a first tube coupling a suction port of the pump in fluid communication with a main drain or mobile cleaning device which draws water and settled debris from the bottom of the pool, and a skimming device including an entrainment nozzle. The entrainment nozzle is coupled by a second tube to a coupling device which diverts a small portion of pool return water pumped from an outlet port of the pump. Most of the pool return water is pumped into a rotary distribution valve, various outlets of which are connected to various pool cleaning heads embedded in an inner surface of the pool. A vacuum canister having a removable cover to allow access to a removable debris trap disposed in the vacuum canister between an inlet and an outlet thereof is coupled between a suction inlet of the pump and the main drain or mobile cleaning device.
    Type: Grant
    Filed: September 11, 1996
    Date of Patent: February 8, 2000
    Assignee: Shasta Industries
    Inventor: Andy F. Blake
  • Patent number: 6009573
    Abstract: A safety diffuser for use with an underwater suction inlet of a pool or spa eliminates the danger associated with a suction inlet on a side of a pool or spa created by the strong suction produced by the pool pump. By strategically placing holes in a tubular portion of the device, blockage of all the holes by a user of the pool or spa is prevented. As a result, the danger of a user of the pool or spa being drawn to and held against the device or the suction inlet is reduced.
    Type: Grant
    Filed: December 31, 1997
    Date of Patent: January 4, 2000
    Inventor: Arnold F. Thibault
  • Patent number: 6003165
    Abstract: A portable spa has a recirculation system with an automatic vacuum breaking mechanism for preventing objects, such as small children, from becoming lodged at the discharge opening at the bottom of the spa. The recirculation system includes a vacuum sensor adapted to sense the amount or rapid change in the amount of vacuum within the discharge conduit of the recirculation system. When a pre-defined vacuum parameter exceeds a pre-determined set point, the safety switch automatically engages the vacuum breaking means, such as recirculation pump power relays, so as to immediately break the vacuum at the discharge pump.
    Type: Grant
    Filed: November 10, 1997
    Date of Patent: December 21, 1999
    Inventor: Casey Loyd
  • Patent number: 6003164
    Abstract: A pool monitoring and control system is provided including a pool having a plurality of inputs and a plurality outputs. Also included is a pump for suctioning fluid from the outputs of the pool only during the activation thereof. A control assembly is connected between the pump and the pool. The control assembly includes at least one sensor adapted to generate an activation signal upon a parameter of the pool falling out of a predetermined range. Further, at least one dispenser is included for dispensing a parameter correction fluid upon the actuation thereof. In use, the control assembly, when the pump is activated, is adapted to actuate the dispenser if the activation signal is received.
    Type: Grant
    Filed: July 31, 1998
    Date of Patent: December 21, 1999
    Inventor: Homer G. Leaders
  • Patent number: 5978981
    Abstract: A hair control device for pools/spas and a method for using the same includes a grate disposable in the pump inlet of a pool/spa with a plurality of elongate flow channels extending between a first end of the grate and a second end of the grate. The elongate flow channels are isolated from one another so as to decrease turbulence and to prevent hair from tangling or knotting behind the grate in such a manner that a person's head is held under water. Preferably, the channels of the grate will be at least 18 inches long. The channels can be linear, or can be disposed in a helical pattern through the housing of the grate.
    Type: Grant
    Filed: November 17, 1997
    Date of Patent: November 9, 1999
    Inventor: John Nelson
  • Patent number: 5953767
    Abstract: An auxiliary children's pool apparatus 10 for providing an adjustable height support enclosure above the bottom 101 of a conventional above ground swimming pool construction 100. The apparatus 10 includes a framework unit 11, a floor unit 12, an enclosure unit 13, and a netting unit 14. The framework unit 11 is adjustable to vary the height of the floor unit 12 relative to the bottom 101 of the pool 100.
    Type: Grant
    Filed: December 19, 1997
    Date of Patent: September 21, 1999
    Inventor: Terry J. Cloffey
  • Patent number: 5946744
    Abstract: An inflatable swimming pool construction that gives high resistance to deformation of the sidewall when filled with water. The pool includes a central ring with a circular cross-section, and attached top and bottom rings having a cresent-shaped cross-section. The central ring provides the majority of the overall vertical height of the pool sidewall, with the top and bottom rings providing a stable addition to the height.
    Type: Grant
    Filed: August 27, 1998
    Date of Patent: September 7, 1999
    Assignee: Sportstuff, Inc.
    Inventor: Leroy L. Peterson
  • Patent number: 5930850
    Abstract: A perimeter skimming gutter and retaining wall of a swimming pool comprises an elongate open first gutter conduit extending about the periphery of the swimming pool for receiving water from the swimming pool; an elongate closed second gutter conduit extending about the periphery of the swimming pool adjacent the first gutter conduit and in fluid communication with the first gutter conduit for receiving water from the first gutter conduit for water flow in a direction toward a filtration and circulation system; and a plurality of water-spray tubes disposed within the second gutter conduit and extending transversely to the water flow through the second gutter conduit. Each water-spray tube includes a plurality of jet spray openings arranged to direct a spray of water within the second gutter conduit only in the direction of water flow toward the filtration and circulation system to propel and thereby increase water flow within the second gutter conduit.
    Type: Grant
    Filed: July 21, 1998
    Date of Patent: August 3, 1999
    Inventor: William H. Baker
  • Patent number: 5922421
    Abstract: A combined vapor barrier and water assembly for securement to the underside of covers of heated water tubs and pools stands by and around an intentionally made drain opening in an otherwise water tight cover, to provide a drain passageway to be used, if necessary, whenever rain water might unwantedly enter the interior of the cover, and while standing by, to provide a vapor barrier preventing heated vapors from rising upwardly through the drain passageway. In a preferred embodiment, at least two dense weave cloth members, spaced apart, each extend completely across the cross section of the drain passageway, while positioned within a hollow contoured housing of the assembly, which is adapted to be secured to the underside of the cover round the intentionally made drain opening, to provide the drain passageway for the exiting rain water that might unwantedly collect in a cover which was originally watertight.
    Type: Grant
    Filed: April 25, 1997
    Date of Patent: July 13, 1999
    Inventor: Gary L. Perry
  • Patent number: 5893179
    Abstract: A waterfall fixture for expelling water in sheet form comprises a housing having a cavity divided into chambers by apertured plates extending across the cavity. The plates are apertured and spaced from each other and from the inlet and outlet of the fixture to define multiple chambers within the cavity separated from one another by the plates. A first plate is opposed to the inlet and acts as a screen to block debris and as a barrier to incoming water to distribute the water into a laminar flow through the chamber defined between the first plate and the inlet. A second plate is opposed to the first screen and helps to further distribute the water into laminar flow and may be valved to assure a perfect laminar sheet style water flow pattern.
    Type: Grant
    Filed: August 28, 1997
    Date of Patent: April 13, 1999
    Assignee: Jandy Industries, Inc.
    Inventor: Bruce R. Johnson
  • Patent number: 5864897
    Abstract: A device for isolating piping associated with a swimming pool for isolating a piping system associated with a swimming pool in order to reduce the amount of chemicals required to treat the piping system, and further to prevent mixture of chemicals within the pool with the treatment chemicals. The isolating device includes an adaptor head having an outlet configured to encircle a conventional swimming pool drain and an inlet configured to receive the end of a conventional vacuum hose. The adaptor head defines a substantially cylindrical configuration having a diameter at least as large as the particular drain with which the isolating device is being used. A plurality of screw bosses is provided on the interior of the adaptor head proximate the outlet to cooperate with the threaded openings provided in the drain for securing the drain grate. The adaptor head includes a cylindrical wall and a cover plate, the cover plate being removably mounted to the cylindrical.
    Type: Grant
    Filed: January 21, 1997
    Date of Patent: February 2, 1999
    Inventor: Terence D. Ross
  • Patent number: 5826855
    Abstract: A pool plug (10) is disclosed comprising a plunger member (12) and a base member (14). The base member (14) is cylindrical having an axial passageway (30) therethrough and opposed annular skirt flanges (32,36) projecting toward each other from opposite rims (26,28) of the member (14). The flange (32) collapses diametrically to allow the base member (14) to be inserted into a panel aperture, and skirt flange (36) depresses to a point that the lower flange (32) is free to open up and resume its original form, capturing the panel between the flanges (32,36). Composed of elastomeric plastic, the flanges (32,36) flex to allow use of the plug in pool panels having a thickness variable within a specified range. The plunger member (12) reciprocally moves upward and downward within the passageway (20) and includes ports (54) that open and close in response thereto. An inwardly directed annular sealing flange (40) engages the plunger member (12) to seal the plunger when it is pushed downward into a closed position.
    Type: Grant
    Filed: May 6, 1996
    Date of Patent: October 27, 1998
    Assignee: The Little Tikes Company
    Inventor: Larry C. Dick
  • Patent number: 5822807
    Abstract: A suction relief apparatus for relieving suction at a suction connection of a swimming pool or spa having a main valve member movable from an open to a closed position to relieve suction at the suction connection in the event of a blockage of the suction connection in the pool. The main valve remains closed until a reset valve is opened, at which time a spring returns the main valve to the open condition, enabling suction to resume at the suction connection of the pool. A switch responsive to increased suction indicative of an obstruction may be utilized to deactivate a suction pump motor. In an alternative embodiment, a frangible member may replace the main valve and reset valves to open a connection to ambient air atmosphere in the event of increased suction in the suction line resulting from an obstruction at the suction connection in the pool.
    Type: Grant
    Filed: March 24, 1997
    Date of Patent: October 20, 1998
    Inventors: Patrick J. Gallagher, Larry R. Mills
  • Patent number: 5809587
    Abstract: A safety device for use in a suction outlet assembly of a swimming pool, whirlpool, spa or the like is disclosed. More particularly, the outlet assembly has an opening therein in communication with a pump adapted to create sufficient suction for causing fluid flow through the outlet assembly and a cover mounted over the opening without substantially obstructing fluid flow therethrough. The safety device includes an obstructing mechanism for obstructing the opening when the cover is not properly positioned or affixed to the outlet assembly, whereby fluid flow through the outlet assembly is substantially prevented even if the pump is in operation.
    Type: Grant
    Filed: March 3, 1997
    Date of Patent: September 22, 1998
    Assignee: H-Tech, Inc.
    Inventor: Gene S. Fleischer
  • Patent number: 5791106
    Abstract: A collapsible pool assembly having a liquid impervious liner with collapsible perimeter walls of modular configuration.
    Type: Grant
    Filed: November 18, 1996
    Date of Patent: August 11, 1998
    Inventors: Craig Allan Nimmo, Adrian David Case
  • Patent number: 5785846
    Abstract: An improved filtration system for swimming pools and the like is disclosed, in which none of the water passing through the filter passes through the recirculating pump for the swimming pool. This is accomplished by connecting the water inlet of the filter directly with the floor drain and surface skimmer. The outlet from the filter is interconnected with an entrainment nozzle supplied with water under pressure from the recirculating pump for the pool. The pump withdraws water directly from the pool, and supplies that water under pressure to the entrainment nozzle, which then draws water through the filter from the outlet to mix such filtered water with the water supplied by the pump to the entrainment nozzle for return to a return outlet in the pool. As a consequence, water flowing through the filter is drawn through it by means of suction, rather than by supplying the water under pressure.
    Type: Grant
    Filed: February 14, 1992
    Date of Patent: July 28, 1998
    Assignee: Caretaker Systems, Inc.
    Inventors: Steven R. Barnes, Lester Mathews
  • Patent number: 5753112
    Abstract: An improved leaf removal system is disclosed for removing leaves and the like through the floor drain of a swimming pool. conventional recirculation system for the pool. This is accomplished by providing a leaf removal chamber adjacent the pool, with a water outlet from the bottom of the chamber to the pool. The floor drain is interconnected by means of a pipe to a water inlet near the upper end of the chamber, and this inlet is located beneath the water level of the pool. A strainer basket is removably placed between the water inlet and the water outlet in the chamber. Return water for the pool is supplied to an entrainment nozzle connected to the water outlet in the chamber to cause a venturi effect to draw water, along with leaves and other debris, from the floor drain into the water inlet of the chamber, from which such water is returned to the pool, along with return water supplied to the entrainment nozzle.
    Type: Grant
    Filed: November 20, 1991
    Date of Patent: May 19, 1998
    Assignee: Caretaker Systems, Inc.
    Inventor: Steven R. Barnes
  • Patent number: 5745933
    Abstract: A pre-washing device for water circulating tubes of a massaging bath tub includes a cap member for a water circulating tube head, a rotary adjustment block locked with the cap member and formed with opposing wedge-shaped openings, and an inner seat located at the water circulating tube head and having channels for the adjustment block to rotate to two stages. A partitioning plate is disposed in the inner seat and includes wedge-shaped openings corresponding to those of the adjustment block. The adjustment block rotates relative to the inner seat so as to align or offset to control the flow of water from the bath tub into the cap member. A valve body and an independent tube are disposed in the water circulating tube head. The valve body is controlled in cooperation with the opening and closing of the water circulating tube head. That is, when the water circulating tube is closed, the valve body is opened, permitting the water to flow from the independent tube into the water circulating tube for pre-washing.
    Type: Grant
    Filed: November 12, 1996
    Date of Patent: May 5, 1998
    Inventor: Li-Fu Yu
  • Patent number: 5734999
    Abstract: A safety device comprising a floor drain grate includes at least two separate regions, and preferably three, with openings through which water can flow into a pool drain. The regions are preferably spaced to either side of the pool drain, by a distance which effectively prevents a swimmer from blocking all the openings at once and becoming stuck to the grate by suction. The floor drain grate may be provided as a retrofit to replace an existing drain grate of a pool.
    Type: Grant
    Filed: January 24, 1997
    Date of Patent: April 7, 1998
    Assignee: John J. Nicholas
    Inventor: John J. Nicholas
  • Patent number: 5720056
    Abstract: An above-ground swimming pool comprises a primary wall extending above a ground surface to enclose a primary pool area. The primary wall including an enclosure region having a first wall height and a spillway region having a second wall height lower than the first wall height. An arcuate secondary wall extends above the ground surface. Opposite ends of the secondary wall are attached to the primary wall at either side of the spillway region. The secondary wall has a third wall height lower than the first and second wall heights. The secondary wall and the primary wall enclose a secondary pool area. A pump is provided to pumping water from the secondary pool to the primary pool to generate a flow of water over the spillway region. The primary wall may consist of a first wall and a second wall joined together at a transition piece. The secondary wall may additionally be connected to the primary wall at the transition piece.
    Type: Grant
    Filed: November 14, 1996
    Date of Patent: February 24, 1998
    Inventor: Doniel G. Aymes