Bizarre Patents
Pizza Pie With Concentric Rings of Crust
A pizza mold for forming a plurality of concentric raised ridges of dough (i.e., crust) on the surface of a pizza pie.
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| Number | Title | Issue Date |
| 8104109 | Movable floor system for swimming pool A movable floor system for a swimming pool, including a structural platform comprising a horizontal frame designed to support a finished covering, the platform being designed to be installed in a cavity acting as the swimming pool. The system includes a lifting mech... | 01/31/2012 |
| 7310833 | Swimming pool lift and transfer bar A lift is provided to facilitate access to swimming pools and spas. The lift includes a base and a mast extending therefrom. An arm pivotally connects to the mast. A seat assembly connects to the arm. An overhead support is positioned above the seat assembly. A firs... | 12/25/2007 |
| 6945912 | Exercise treadmill with slope adjustment A treadmill type exercise machine having an endless belt for simulating walking up a hill is provided. The exercise machine uses low impact walking motion, which is a favored exercise method while combining the extra effort of climbing without using the same muscle ... | 09/20/2005 |
| 6851230 | Padding device from an above-ground pool and its associated method of installation 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 contac... | 02/08/2005 |
| 6640504 | Moveable swimming pool floor A vertically moveable swimming pool floor apparatus includes a rigid planar platform configured to fit the planform area of a swimming pool, and a plurality of hydraulically powered hoists coupled to the platform to raise and lower the platform. The hoist... | 11/04/2003 |
| 6389615 | Fail-safe safety swimming pool net A swimming pool rescue apparatus includes a safety pool bottom substrate, having a periphery made of a buoyant material and at least one non-peripheral portion is buoyant. The buoyant material is urged into a fixed position at a bottom of the pool by a re... | 05/21/2002 |
| 6253390 | Aquatic raisable floor apparatus AN AQUATIC raisable floor apparatus includes a platform and a buoyancy chamber in the platform with a top and a bottom. The chamber is closed on the top and open to the pool near the bottom. There is an air supply connected to the chamber. A valve is capa... | 07/03/2001 |
| 6195812 | System for raising and lowering a liner of a fluid bearing receptacle A system (10) for raising and lowering a swimming pool liner (12) includes a plate (22) used to define a spill way (24) for providing fluid communication between an outside surface of the liner and an inside surface (16) of the pool (14). The liner is det... | 03/06/2001 |
| 6127930 | Motion responsive swimming pool safety mat An automatically inflatable mattress adapted to rest on a bottom of a swimming pool in its deflated position and inflates using compressed air pumped through air inflation lines that are coiled around spring loaded hose reels. A microprocessor actuates a ... | 10/03/2000 |
| 6105180 | Height adjustable false bottom for multi-purpose pools A height adjustable false bottom for multi-purpose pools. The apparatus has a device for adjusting the height of the false bottom, where a plurality of supporting legs, which are pivotable and have a variable length, are used for the height adjustment. Th... | 08/22/2000 |
| 5953767 | Auxiliary children's pool apparatus 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... | 09/21/1999 |
| 5832547 | Swimming pool automatic rescue device An automatic rescue device employing a safety net usable in large in-ground swimming pools operable without human assistance can lift a net rapidly and effectively to the surface and is suitable to handle significant weight and rescue several people in a ... | 11/10/1998 |
| 5678253 | Adjustable pool flooring structure An adjustable flooring structure for a pool includes a platform and three groups of hydraulic cylinders. The first group of cylinders is vertically mounted to the platform and is extendable between a minimum first length and a maximum first length for lif... | 10/21/1997 |
| 5542502 | Hoist driven rescue mat for swimming pool A rescue mat for use in an in-ground swimming pool includes a horizontally disposed mat extending across at the corners of the deepest end of the swimming pool to the start of the shallow end, attachable at the corners of the mat. The mat being connected ... | 08/06/1996 |
| 5425023 | Network system and method of managing a maximum transfer unit in the network system A method of managing, in a network system having at least two end systems, at least two networks respectively connected to the at least two end systems and at least one transfer device for connecting the networks and transferring data between the networks... | 06/13/1995 |
| 5390377 | Sheet for converting hot tub to wading pool This device provides a substantially flat, rigid sheet for converting a hot tub to a wading pool. The sheet is designed to set on the seat of a hot tub and cover the foot well section of the hot tub. The sheet is provided with a plurality of small holes t... | 02/21/1995 |
| 5347773 | Rigid cover assignment for swimming pool or basin A cover arrangement together with a displacement mechanism for a swimming pool having a basin (1). The displacement mechanism moves the cover vertically inside the basin (1) of the swimming pool between two extreme positions. One position is a bottom (7) ... | 09/20/1994 |
| 5295929 | Hydrotherapy device with underwater treadmill Hydrotherapic rehabilitative device characterized in that it comprises an individual rehabilitation horizontal tub (6), whose bottom is partially formed by a vertically movable treadmill platform (9) and whose walls extend downwardly beyond said bottom to... | 03/22/1994 |
| 5271483 | Apparatus for lifting false floor in swimming pool The present invention relates to a pool where a false floor is horizontally arranged and a plurality of longitudinal grooves are installed within the inside-walls of a pool, and lifting units are equipped in each longitudinal grooves to lift a false floor... | 12/21/1993 |
| 5267358 | Swimming pool safety net apparatus An apparatus to include a flexible protective web mounted in a first position to a bottom surface of a swimming pool and in a second position raised adjacent an upper edge of a perimeter side of the swimming pool. The apparatus includes a primary control ... | 12/07/1993 |
| 5036555 | Bathing unit with adjustable height platform A bathing unit which includes a vertically adjustable bottom portion and fluid receiving channels. The lift mechanism includes a spring and manual spring tension adjuster. The user is able to adjust the spring so that the platform moves when the weight of... | 08/06/1991 |
| 5025512 | Flooring apparatus for pool or the like The flooring apparatus for pool or the like comprises an elevating floor formed almost identically with an opening area of a pool or the like, an elevator for moving the elevating floor vertically, and a means for holding the elevating floor at a desired ... | 06/25/1991 |
| 4985941 | Hydrotherapy machine This hydrotherapy machine has a top-opening tank with a floor spaced above the tank bottom. The periphery of the floor is spaced from the tank wall. Liquid under pressure is admitted to the space between the floor and the tank bottom, and proceeds upwardl... | 01/22/1991 |
| 4937896 | Floor-level adjusting device for a pool An improved floor-level adjusting device for a pool is particularly designed to be incorporated in an existing pool at low cost without the destruction thereof. The floor-level adjusting device for a pool has a movable floor disposed in a pool for vertica... | 07/03/1990 |
| 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 |
| 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 |
| 4864666 | Fluid-isolation bathing apparatus An apparatus that permits fluid-isolation bathing whereby a bather can bathe in a relatively small volume of bathing fluid or liquid selected for special properties (e.g. cleansing or soaking). The bather is isolated from a larger surrounding volume of wa... | 09/12/1989 |
| 4831672 | Floor-level adjusting device for a pool An improved floor-level adjusting device for a pool is particularly designed to be incorporated in an existing pool at low cost without the destruction thereof. The floor-level adjusting device for a pool has a movable floor disposed in a pool for vertica... | 05/23/1989 |
| 4574404 | Airlift bulkhead A movable, submersible, transversely extending bulkhead for use in a swimming pool. The bulkhead has an elongated hollow body with top, bottom, end and side walls and a pair of spaced air chambers positioned toward each of its ends. Positioned between and... | 03/11/1986 |
| 4419776 | Bathtub assembly for handicapped persons A bathtub assembly that can be raised and lowered has a bottom and a lift plate with scissors-like guide frames positioned between them, which said frames guide the lift plate vertically. Two collapsible hoses or bellows, made of material that bends but d... | 12/13/1983 |
| 4364131 | Liquid reservoir A liquid reservoir, for example a swimming bath, a test tank or an aquaculture tank, comprises an open-topped container having at least one side wall, a first floor fixed relative to the side wall(s) and a second floor above the first floor which is able ... | 12/21/1982 |
| 4318421 | Float controlled syphon valve for swimming pool cover A float controlled valve syphons water out of a swimming pool cover. The syphon valve includes co-operable male and female valve members disposed for mutually relative movement to bring them into and out of mutual engagement to thereby close and open flow... | 03/09/1982 |
| 4285078 | Automatic swimming pool cover An automatic cover for a liquid storage container and a method of control corresponding thereto including a cover disposed within the container, a membrane connected to a portion of the storage container and connected along a peripheral portion of the mem... | 08/25/1981 |
| 4283801 | Hydraulic cylinder for multilevel submersible safety deck or decks for pools Pools of all peripheral shapes of either above or below ground construction with single slope or flat bottoms when not in use may be equipped with a rigid structurally safe traversible completely dry surface deck or decks for domestic functions and to sim... | 08/18/1981 |
| 4271542 | Swimming pool platform and components A vertically adjustable pool platform, for use in a swimming pool, means to vertically raise and lower the platform, and means connecting the platform to the means to vertically raise and lower the platform, the pool platform being buoyant to float on the... | 06/09/1981 |
| 4241724 | Method and means of preventing heat convection in a solar pond A method and means of preventing heat convection in a solar pond is disclosed with the means comprising a liner element adapted to cover the sides and floor of a solar pond with the liner element having a bottom portion corresponding to the floor of the p... | 12/30/1980 |
| 4236258 | Automatic swimming pool cover An automatic cover for a liquid storage container and a method of control corresponding thereto including a cover disposed within the container, a membrane connected to a portion of the storage container and connected along a peripheral portion of the mem... | 12/02/1980 |
| 4229843 | Pool floor An adjustable flooring structure for swimming pools is formed by a series of large, flat, panel-like modules interconnected to form a floor. The structure includes ballasting means formed by serially connected pipes in the modules which pipes can be fille... | 10/28/1980 |
| 4106134 | Lifting floors for swimming pools Lifting floor for swimming pool comprising a height adjustable selfsupporting plate which is carried by lifting columns extending substantially the whole height of the swimming pool, the lifting columns being formed as supporting columns of corrosion resi... | 08/15/1978 |
