Did You Know...
...that the x-ray was discovered purely by accident? When German physicist Wilhelm Konrad von Roentgen was experimenting with cathode rays in 1895, he put an activated Crookes tube in a book and went out to lunch. When he returned, he discovered that a key that had also been placed in the book showed up as an image on the developed film!
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| Number | Title | Issue Date |
| 7353769 | Cantilever cover The cantilever cover is suspended from one side over an article to be protected from the elements. The cover has a canopy frame and flexible, weatherproof canopy or cover secured thereover. A pair of canopy frame support arms extends from corresponding closed sleeve... | 04/08/2008 |
| 6971124 | Pool cleaner storage arrangement An improved storage receptacle for an automatic swimming pool cleaning device that incorporates a cleaning head secured to a retractable hose includes a barrier that is selectively operated to block the opening of the storage receptacle and prevent the cleaning head... | 12/06/2005 |
| 6622317 | Plumbing fitting cover cap retention system A retention system for holding and mounting a cover cap to a plumbing fitting having a tubular terminal that projects at an opening through a bath or shower wall, comprising a retainer ring fitting on said tubular terminal and tightenable toward said wall... | 09/23/2003 |
| 6582315 | Self contained water slide for individual yard use A plastic slide is provided with a pump at the bottom of the slide and placed into a pool, typically a wading pool. A strainer assembly filters out grass and other foreign matter from the water, and transfers the water through a small electrical, air, or ... | 06/24/2003 |
| 6581349 | Method and manufacture for constructing watertight A method and article of manufacture for building waterproof concrete structures. An integral casing comprised of a rigid plastic shell with an armature attached to its face is covered with concrete. The shell is formed either in the shape of a desired str... | 06/24/2003 |
| 6378659 | Swimming pool lift A hydraulic pool lift is disclosed. The lift has enhanced stability due to its adjustable support assembly, and a reinforced piston rod. A load carrying component is rotated 180° from a deck position to a pool position. A curved track on a hydraulically ... | 04/30/2002 |
| 6230451 | Ice skating rink structure An ice skating rink structure comprising a plurality of boards and a plurality of brackets is provided. Each of the brackets has a U-shaped support for holding one or more of the boards and has at least one downward projection for insertion into the groun... | 05/15/2001 |
| 6212702 | SPA cover kit A lightweight, easy to assemble spa cover kit is disclosed herein. The cover kit includes a square or rectangular-shaped overhead cap pivotally attached at two corners along one end to two dual hinged support posts. The cap is made of lightweight, weather... | 04/10/2001 |
| 6170612 | Swimming pool lift A hydraulic pool lift is disclosed. The lift has enhanced stability due to its adjustable support assembly, and a reinforced piston rod. A load carrying component is rotated 180° from a deck position to a pool position. A curved track on a hydraulically ... | 01/09/2001 |
| 6079059 | Movable covering device, particularly for swimming pools A roof movable between a raised position in which it forms a shelter over a terrace and a lowered position in which it forms a cover over a swimming pool. The roof is mounted on pivotable pillars via hinges. One edge of the roof is supported in the raised... | 06/27/2000 |
| 6001071 | Aquatic exercise and rehabilitation device An aquatic exercise and rehabilitation device includes a cycle assembly mounted in a vessel containing water. The cycle assembly includes a seat and a pivotally mounted handlebar on each side of the seat. A pair of pedals is rotationally mounted with each... | 12/14/1999 |
| 5881402 | Portable in-ground pool An in-ground pool with an inflatable flange and a non-rigid flexible body to permit the body to conform to the interior surface of a hole. The pool is designed with an exterior circumferential flange which is placed around the ledge of a hole dug in sand ... | 03/16/1999 |
| 5862541 | Swimming pool skimmer well frog rescue device The exit ramp of the invention comprises a flat, discoid base lying flatly on the bottom wall of a conventional pool skimmer screen bucket. An upright post is fixed to the base and vertically extends beyond the bucket upper edge. An inclined platform is p... | 01/26/1999 |
| 5745932 | Hot tub cover and enclosure A hot tub cover and enclosure which, when in a closed position, forms a waterproof cover for a hot tub and a sloping surface to shed snow and water, and when in an open position, provides privacy screening and wind protection. The side walls of the hot tu... | 05/05/1998 |
| 5709099 | Multi-purpose recreational facility An ice rink and an aquatic facility are combined into a single multi-purpose recreational facility. A new ice rink can be created or an existing ice rink can be modified. This multi-purpose recreational facility also permits the shared design, use, infras... | 01/20/1998 |
| 5572750 | Table and chair pool A pool for supporting a table and chairs within a volume of water. The inventive device includes a bottom panel having a perimeter sidewall projecting upwardly therefrom. A central sidewall is concentrically positioned relative to the perimeter sidewall a... | 11/12/1996 |
| 5551922 | Toy water slide A backyard toy includes an elongated slide sheet terminating in a pool. Inflatable side wall is on the pool form a serpentine pathway through the pool so that a child sliding on the slide follows a zig zag path through said pool. A sprayer is provided to ... | 09/03/1996 |
| 5540021 | Fun floors Floor structures that are erected on a temporary basis on ground so that they can be removed and not do permanent damage to the environment. In one embodiment a frame is mounted on poles that are staked into the ground. The floor has sections that extend ... | 07/30/1996 |
| 5379467 | Deep water exercise and therapy pool A water exercise device made up of a closed loop track, a soaking pool and a channel providing a walking path therebetween. The water depth is generally uniform in depth to provide running and walking exercise but deeper areas may be provided to require s... | 01/10/1995 |
| 5367720 | Foot washer apparatus An apparatus including a container to include side walls and a floor, with a drain directed through the floor to a drainage conduit, with a fluid conduit directed into a fluid manifold, wherein the fluid manifold is mounted to the container, with aperture... | 11/29/1994 |
| 5303527 | Removable pool cover support apparatus A removable support apparatus for supporting a swimming pool cover employs adjustable frame assemblies capable of spanning between opposite edges at opposite sides of the pool. Each frame assembly includes a pair of separate frame members placed in side-b... | 04/19/1994 |
| 5271106 | Emulative swimming pool A swimming pool producing surrounding visual effects utilizes large picture generating surfaces adjacent to water-containing surfaces for displaying large images emulative of remote swimming environments. The pool has controllable water currents for in-pl... | 12/21/1993 |
| 5201562 | Truck pool apparatus A truck bed insert is arranged of unitary construction complementarily being received within a pickup truck bed. A drain opening is arranged to permit draining of water directed into the insert subsequent to use. A modified aspect of the invention include... | 04/13/1993 |
| 5173972 | Automatic foot washer An automatic foot washer for being located on a treadable surface and including, in its most preferred embodiment, a hollow frame structure which rests on the treadable surface, bounds a central open area, and defines both a hollow inner space and a plura... | 12/29/1992 |
| 5131102 | Spa cover lift assembly A device for use in conjunction with a spa cover or spa cover mounted for pivotal movement to facilitate the removal of the cover away from the vicinity of the spa or spa when same is in use. In one embodiment, a bridge arm supported by two side arms is p... | 07/21/1992 |
| 5103508 | Water walker The water walker is a collapsible exercise device with a waterproof liner supported by an external frame which is made rigid and stable when extended. The height is readily extendable to suit the needs of the user and is adapted to be filled with water to... | 04/14/1992 |
| 5092000 | Swimming pool protector and converter Apparatus for converting a swimming pool into a skating rink and preserving the structural integrity of the pool, the pool comprising a water basin having a rim extending around the top edge of the basin, the basin being filled with water up to a predeter... | 03/03/1992 |
| 5056167 | Modular assembly for swimming pools A modular assembly for use in a swimming pool is described. This assembly integrates the technical components and accessories for swimming pools, including at least one stair, a horizontal submerged bathing portion capable of supporting a user while sitti... | 10/15/1991 |
| 5042479 | Therapeutic vibratory bath A therapeutic vibratory bath with a containment chamber for receipt of fluid medium and the individual to be bathed, such chamber having in one embodiment a plurality of vibration-producing devices arrayed around the chamber, such arrays disposed at a plu... | 08/27/1991 |
| 5040250 | Return fitting with releasable cap A retaining ring of an eyeball return fitting of the type used in swimming pools and spas is provided with a releasable or breakaway cover cap. The cap closes the end of the return fitting during construction. This permits the finish work for the cement a... | 08/20/1991 |
| 4951326 | Return fitting with releasable cap A retaining ring of an eyeball return fitting of the type used in swimming pools and spas is provided with a releaseable or breakaway cover cap. The cap closes the end of the return fitting during construction. This permits the finish work for the cement ... | 08/28/1990 |
| 4918766 | Hydrotherapy exercising device with scissor lift treadmill An apparatus for exercising and massaging a human, a horse or other animal comprises a tank containing a pool of water, a plurality of water massage jets in the sidewalls of the tank, a cage for retaining the person, horse or animal, a treadmill positione... | 04/24/1990 |
| 4910814 | Splash pool for recreational water slides The splash or landing pool of a water slide has an entry zone of substantially increased depth relative to conventional splash pools and a shallow exit zone leading from the entry zone. The entry zone is provided with a false floor at a depth such that a ... | 03/27/1990 |
| 4890342 | Swimming pool protector and converter Apparatus for converting a swimming pool into a skating rink and preserving the structural integrity of the pool, the pool comprising a water basin having a rim extending around the top edge of the basin, the basin being filled with water up to a predeter... | 01/02/1990 |
| 4883012 | Dual-purpose water craft A recreational water craft useable as a vehicle and as a swimming facility has first and second floatable components, the first having a deck supported by a pair of compartmented pontoons. The compartments have water and air inlet and discharge facilities... | 11/28/1989 |
| 4807309 | Swimming pool protector and converter An apparatus for converting a swimming pool into a skating rink and preserving the structural integrity of the pool, the pool comprising a water basin and a ledge extending around the top edge of the basin, the ledge protruding inwardly over the edge of t... | 02/28/1989 |
| 4761838 | Contrast-healing water spa system In one exemplar embodiment, a contrast-healing water spa system is disclosed that includes a single monolithically formed tub having two approximately equal-sized chambers that are separated by an integrally formed insulated structural wall that will prov... | 08/09/1988 |
| 4346885 | Water-and/or sandbox construction There is disclosed a water-and/or sandbox construction comprising an integrally moulded body having side walls and inclined upper edges, the bottom of which is formed with shaped protrusions or recesses for releasable engagement with complementarily shape... | 08/31/1982 |
| 4343464 | Playground slide and shelter A playground structure includes a container for containing a playing medium with a substantially rigid cover having a slide thereon with the cover hinged to the container and including a plurality of further hinged panels for alternately folded covering o... | 08/10/1982 |
| 4278247 | Water slide A water slide includes a trough or tube having an entry end elevated with respect to a recovery end for conveying water and individuals from the entry end to the recovery end. A loading platform extends into a starting pool and is designed to allow easy a... | 07/14/1981 |
