Did You Know...
...that one person who claimed to be the inventor of the television is Russian emigre Vladimir Zworykin? In 1929 David Sarnoff, founder of RCA, asked Zworykin what it would take to develop TV for commercial use. He said: a year and a half and $100,000. In reality, it took 20 years and $50 million! Before his death in 1982 at the age of 92, Zworykin said of his invention: "The technique is wonderful. It is beyond my expectations. But the programs! I would never let my children even come close to this thing."
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| Number | Title | Issue Date |
| 8069504 | Bladder for winterizing a swimming pool An inflatable domed pool bladder for use when winterizing swimming pools is herein disclosed, comprising a large inflatable bladder which covers the entire pool surface wherein a center of the dome is higher than the sides. In this manner when a conventional pool co... | 12/06/2011 |
| 8015631 | Safety enclosure cover for portable inflatable pool A safety enclosure cover for a portable air-inflatable swimming pool includes a mat spread on a horizontal surface, with the inflatable pool resting on the mat. An outer rim of the mat extends beyond an outer wall of the inflatable pool. Water is filled into the inf... | 09/13/2011 |
| 7874023 | Inflatable safety swimming pool cover A system and method for an inflatable swimming pool cover that is elevated above the water line, particularly for above ground pools, is herein disclosed. The cover is configured with a donut-shaped air pillow around a higher center air pillow. The donut-shaped air ... | 01/25/2011 |
| 7603727 | Floating spa cover of adjustable size A floating spa cover generally comprises an inflatable insulating and soar heating central portion surrounded by one or more independently inflatable adjustable rings. The inflatable central portion comprises a center section and a peripheral ring. The center sectio... | 10/20/2009 |
| 7340845 | Evaporation apparatus An evaporation apparatus 10 is shown in the form of an inflatable elongate plastic tube 12 that is fitted with fluid control means in the form of an inlet gas fan 14 and a gas outlet hole 16. The capacity of the inlet gas fan 14 an... | 03/11/2008 |
| 7093593 | Floating solar pool heater A soft, flexible, solar pool heater for floating on water generally comprises independently inflatable outer ring and central portion. When chamber and cavity are inflated, the cavity is with the top and bottom planes of the ring. The ring can be inflated with water... | 08/22/2006 |
| 7080653 | Collapsible storage devices A collapsible structure has first and second flexible loop members, each loop member defining a closed loop and having a first side and an opposing second side, each loop member adapted to assume an expanded position and a collapsed position, with the two loop membe... | 07/25/2006 |
| 6945533 | Gaming cloth and device for securing cloth to gaming table A system for securing a gaming cloth to a gaming table of various shapes and sizes. In one embodiment, a Velcro loop strip is attached to the bottom surface of flaps which form the border of the cloth. A continuous Velcro hoop strip is positioned around the table pe... | 09/20/2005 |
| 6915534 | Insulated cover and method for using same A cover for a pool includes a plurality of panels joined together by welding one another together to form a single blanket. The blanket is in covering relation over the fluid within a pool basin and a plurality of holes formed in the lateral layers of each panel wit... | 07/12/2005 |
| 6694539 | Bubble ease A pool cover for use with pools is disclosed. The apparatus is a pool cover which comprises a centrally located bubble, a series of branches that would be connected to the centrally located bubble, and a series of cover sections that would be located in b... | 02/24/2004 |
| 6637046 | Heat retaining swimming pool cover A heat retaining swimming pool cover (1) is floatable on pool water (2) in a swimming pool (3) and has a plastic upper film (5) for facing toward the atmosphere (6), a plastic lower film (8) for facing toward the pool water (2), sufficient spaced apart ai... | 10/28/2003 |
| 6574804 | Safety and life-saving device for aquatic environment The invention concerns an inflatable grille, whereof the numerous openings are provided with open-worked netting, capable of being spaced apart and locked for rescuing in an aquatic environment someone stuck beneath the device to move onto the device and ... | 06/10/2003 |
| 6539559 | Anti-litter float for a swimming pool and method of using anti-litter float for a swimming pool An anti-litter float or balloon for a swimming pool. The single compartment balloon abuts continuously the containing wall, and the self-mooring balloon prevents litter from being disbursed into the pool water. Flaps and/or element-resistant covers can be... | 04/01/2003 |
| 6523190 | Heat retaining swimming pool cover A heat retaining swimming pool cover (1) is floatable on pool water (2) in a swimming pool (3) and has a plastic upper film (5) for facing toward the atmosphere (6), a plastic lower film (8) for facing toward the pool water (2), sufficient spaced apart ai... | 02/25/2003 |
| 6497533 | Drainage system with membrane cover and method for covering wastewater reservoir A membrane cover is mounted at the surface of a wastewater reservoir. The membrane cover has a flexible buoyant impermeable membrane affixed to the perimeter walls of the reservoir and loosely laid over the wastewater level inside the reservoir. An array ... | 12/24/2002 |
| 6408453 | Inflatable swimming pool assembly An inflatable swimming pool assembly includes an inflatable swimming pool with a surrounding wall which confines an accommodation space and which terminates at an upper surrounding edge portion to define an opening. A flexible cover has an upper major wal... | 06/25/2002 |
| 6374433 | Moveable hot tub cover structure A moveable hot tub cover structure removably covers a hot tub and includes at least one rail structure mounted generally adjacent the hot tub and extending outwards therefrom and a rigid hot tub cover structure including at least two upright walls having ... | 04/23/2002 |
| 6357964 | Drainage system with membrane cover and method for covering wastewater reservoir A membrane cover is mounted at the surface of a wastewater reservoir. The membrane cover has a flexible buoyant impermeable membrane affixed to the perimeter walls of the reservoir and loosely laid over the wastewater level inside the reservoir. An array ... | 03/19/2002 |
| 6286157 | Inflatable cover for swimming pools An inflatable cover for swimming pools comprising a pliable exterior sheet and a pliable interior sheet permanently affixed to one another around an outer periphery thereof. The exterior sheet includes an air inlet valve, which functions to allow air to b... | 09/11/2001 |
| 6286155 | Pool cover having integral reflective solar heating and insulative properties An improved lightweight, multi-layer, reflective swimming pool cover containing two thermoplastic layers. The top layer has a dark-colored polyethylene film and the lower layer has a polyethylene film with a aluminum concentrate, or other suitable reflect... | 09/11/2001 |
| 6209150 | Inflatable Sun shade for pool A sun shade pool typically used by small children in an above-the-ground environment for use in the out-of-doors and method therefore is disclosed which is directed to an inflatable pool and a removable sun shade canopy mounted upon the inflatable pool fo... | 04/03/2001 |
| 6119284 | Floating pool cover support A floating pool cover support for suspending a pool cover above the surface of the water. The floating pool cover support includes a pair of spaced apart base members. A pair of float tubes surround the base members, each having a specific gravity less th... | 09/19/2000 |
| 6052843 | Float-retaining covering device A float retaining cover device 10 comprising a non-permeable cover sheet 12 supported by a floating member 14. The latter can be a free-floating retention method using grommets 20 attached to the central underside of the cover sheet 12 and on the float 14... | 04/25/2000 |
| 5922421 | Combined vapor barrier and water drain assembly for covers of heated water tubs and pools 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 n... | 07/13/1999 |
| 5901503 | Swimming pool dome A pool dome for covering an outdoor swimming pool during the fall and winter seasons comprising vertical structural walls and a plurality of inflatable sections formed between the walls. The vertical structural walls provide sufficient structural support ... | 05/11/1999 |
| 5860413 | Pool cover The pool cover is made of multi-layer light weight construction having a transparent top layer to permit sunlight to pass through and an opaque bottom layer for absorbing sunlight passing through the transparent layer. In addition, a plurality of pockets ... | 01/19/1999 |
| 5555877 | Cover for pond used to collect solar radiation A cover for withstanding stormy weather and increasing solar heating of a body of water is disposed over the surface of the water. The cover is more transparent to visible radiation from the sun than to infrared radiation, and is anchored and sealed aroun... | 09/17/1996 |
| 5511536 | Solar-type pool cover The pool cover is made of multi-layer light weight construction having transparent top layers to permit sunlight to pass through, an opaque layer for absorbing sunlight passing through the transparent layers and a reflective layer to transfer heat from th... | 04/30/1996 |
| 5381634 | Covering structure particularly for surfaces having a marked longitudinal extension The covering structure has retention members for location beside a surface to be covered. A suspension member, having a plurality of mutually hinged segments, is pivotally connected at its ends to the retention members. Locking pins are provided for locki... | 01/17/1995 |
| 5373590 | Spa cover An airtight spa cover (11) supported by air generated by the spa pump and the spa blower (29). The cover is attached to the external periphery of the spa walls (17) and includes a skirt (29) that extends into the spa water (35), adjacent to the internal p... | 12/20/1994 |
| 5367722 | Spa and tub cover A cover for spas, hot tubs and the like has a pair of cover portions hinged together along a common top edge. Each cover portion internally has an inflatable air bladder including a series of spaced apart brace members separating each bladder into a numbe... | 11/29/1994 |
| 5293652 | Swimming pool winterizing method and apparatus A pool winterizing system including a pool cover-sheet and a housing that is disposed beneath the periphery of the cover-sheet and in communication with the environment exterior to the cover-sheet. The housing defines an inlet duct and an outlet duct, eac... | 03/15/1994 |
| 5246308 | Fluid storage system and methods of installation Disclosed is a fluid reservoir having a bottom and side and end walls which is lined with a flexible material secured about its marginal edges to a footing surrounding the reservoir. A cover is disposed over the reservoir with its marginal edges secured t... | 09/21/1993 |
| 5144704 | Swimming pool cover with multiple air compartments This pool cover utilizes multiple, laterally displaced air compartments which are fixed in location with respect to each other, and are integral portions of the cover. The air compartments may be interleaved by having laterally overlapping portions in ord... | 09/08/1992 |
| 4953239 | Inflatable pool cover An inflatable swimming pool cover which, when installed and inflated, floats on the swimming pool water's surface and has a bulbous surface rising above the level of the swimming pool's perimeter. A small blower with its exhaust directed into the interior... | 09/04/1990 |
| 4851275 | Covering used to protect water conditions of nursery pool from damage by acid rain and extraordinary temperatures This invention discloses a covering comprising a floating member shaped as a square loop, one pair of opposite portions of which are inflatable members, and a water-proof sheet having a nipple downwardly formed thereon, which is loosely stretched inside t... | 07/25/1989 |
| 4847925 | Cover for a pool, hot tub or the like A cover for a pool, hot tub or the like wherein the pool structure has an upper perimeter portion defining a pool area where water is contained. The cover has a first upper flexible sheet member having a first central portion and a first perimeter portion... | 07/18/1989 |
| 4825479 | Inflatable swimming pool cover A sheet cover for a swimming pool adapted to become arched over the pool when air under pressure is projected under the cover. The cover has a pending skirt adapted to hang in the water adjacent the peripheral sidewall. The skirt is provided with a series... | 05/02/1989 |
| 4790037 | Swimming pool cover assembly A swimming pool cover assembly is provided which can easily be installed and removed, and which is adapted to be supported above the surface of the pool without bulky reinforcing or structural members. The swimming pool cover assembly includes an air impe... | 12/13/1988 |
| 4718130 | Interdome enclosure system for a heated swimming pool An interdome enclosure system takes advantage of the latent heat of condensation for energy efficiency. The system includes, in combination with a humid environment, such as a heated pool and an outer enclosure housing the pool, an inner enclosure dispose... | 01/12/1988 |
