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 |
| 8075452 | Composite diving board A composite diving board comprising a composite laminate of fibers in a matrix. ... | 12/13/2011 |
| 7367894 | Contoured variably tensionable soft membrane ride surface for ride attraction A ride surface for water ride attractions and the like is provided. The ride surface is fabricated from a reinforced membrane material tensioned over a supporting framework. The tensioned membrane ride surface serves the dual role of providing structural support for... | 05/06/2008 |
| 7361123 | Exercise bench methods and apparatus An exercise bench includes a back support and first and second legs pivotally connected to respective ends of the back support. The legs are pivotal between positions extending generally perpendicular to the back support, and positions extending generally parallel t... | 04/22/2008 |
| 7361104 | Automated ball game training and playing system A ball game system for training and/or play comprising one or more playing areas suitably large to accommodate running and jumping players, each playing area including adjacent surface areas forming a court and having distinctly different properties, such as a first... | 04/22/2008 |
| 7355134 | Practice switch apparatus A platform of the type holding a plurality of normally-open electric switches in position for activation of a selected individual switch by application of a force in a direction normal to a surface of the switch by a portion of a human body. An exemplary platform ac... | 04/08/2008 |
| 7335146 | Cushioned exercise platform A portable resilient action exercise platform 10 permits the user to jog in place when indoors and provides an increasing resistance to deformation as the amount of deformation of the platform increases. A support assembly including a spaced array of flexible... | 02/26/2008 |
| 7294093 | Ski exercising and rehabilitation apparatus The object of this invention is an the apparatus for ski exercising and rehabilitation, intended to serve for both beginning and professional skiers who shall later ski on snow on either carving or traditional skis, water skis or snowboards. The apparatus according ... | 11/13/2007 |
| 7182704 | Automated ball game training and playing system A ball game system for training and/or play comprising a one or more playing areas suitably large to accommodate running and jumping players, each playing area including adjacent surface areas forming a court and having distinctly different properties, such as a fir... | 02/27/2007 |
| 7175567 | Gymnastics springboard with adjustable elasticity designed for training and competition A gymnastics springboard with adjustable elasticity comprising a top board coated with a coating subdivided into two distinct zones enabling the impact zone to be demarcated visually, which presents a homogeneous and flexible structure with a hardness able to be adj... | 02/13/2007 |
| 7125599 | Platform having a non-slip finish A non-slip platform for location adjacent to a body of water providing a person with traction despite the presence of water on the platform, wherein the platform includes an upper portion; a fluid-draining topography at the upper portion that channels the water to m... | 10/24/2006 |
| 7096817 | Pontoon craft A watercraft of the “float boat” type, including spaced apart inflatable pontoons interconnected by a platform structure having a chair thereon and a front ramp and support rail movable between a stowed out-of-the way position to a use position and including a r... | 08/29/2006 |
| 7094181 | Transportable trampoline system A portable trampoline exercise system, including a foldable trampoline with long-lasting rigidity in the frame and a specifically adapted carrying case for transporting the folded trampoline. The trampoline is made foldable by using hinges to connect sections of the... | 08/22/2006 |
| 7044900 | Exercise apparatus An exercise apparatus comprising a frame, and at least one elongated sheet of flexible material has a first end coupled to the frame and has a second free end positioned frontwardly relative to the frame. The sheet of flexible material has an upwardly facing support... | 05/16/2006 |
| 6973881 | Railcar nailable floor A nailable floor having a plurality of modular floor planks having a planar web spanning between two side flanges. The side flanges extend to bottom flanges that provide support from the underframe of a railcar. The planar web, side flanges and bottom flanges are al... | 12/13/2005 |
| 6926643 | Aerobic ramp A step exercising system for an aerobic step workout is constructed as a portable inclined step ramp. The ramp is sloped towards a user such that the user can step up onto the ramp at various heights, thereby regulating the degree of intensity of the workout without... | 08/09/2005 |
| 6923744 | Trampoline system A trampoline system has a frame with horizontal and supporting members raising the frame above the ground. The trampoline bed and springs have a pad body attached to the trampoline frame by straps. Each strap pair has an upper and lower strap attached to the pad bod... | 08/02/2005 |
| 6920652 | Top for starting platform for swimming pool A top for a starting platform at one end of a swimming pool has an upper surface, which is adapted to support both feet of a swimmer in a starting position, and a lower surface, at which the top is mountable so that the upper surface slants downwardly and frontwardl... | 07/26/2005 |
| 6648036 | Veneer lathe A veneer lathe that can provide a veneer produced by cutting out a log, which is substantially free from surface scratches, and thus can be used as a surface sheet for plywood. A roller bar drives a log while pushing its peripheral surface on the upstream... | 11/18/2003 |
| 6598365 | Impact and energy absorbing product for floors, walls, and other flat surfaces An impact and energy absorbing product for floors, walls, panels, crash mats and other flat surfaces. More particularly, the invention teaches the usage of coiled springs in conjunction with polymeric materials or metals such as titanium or steel, to help... | 07/29/2003 |
| 6523188 | Top for starting platform for swimming pool A top for a starting platform at one end of a swimming pool has an upper surface, which is adapted to support both feet of a swimmer in a starting position, and a lower surface, at which the top is mountable so that the upper surface slants downwardly and... | 02/25/2003 |
| 6319174 | Soft-edged recreational trampoline A trampoline which incorporates a flexible mat supported above a support frame by a number of spaced flexible rods; each rod is secured at one end to the mat and at the other end to the support frame.... | 11/20/2001 |
| 6132338 | Resilient exercise board Exercise board comprising a generally rectangular platform having a laminated structure with a horizontally extending substantially rigid substrate and a pad of resilient material on the upper side of the substrate, and bars of resilient spring material e... | 10/17/2000 |
| 5634870 | Resilient platform exercise device A resilient platform exercise device includes a trampoline having a peripheral frame with a platform secured to the frame by a plurality of spaced springs for resiliently mounting the platform. An upstanding pole assembly is mounted directly to the frame ... | 06/03/1997 |
| 5607377 | Rebounder and punching bag-boxing fitness device The device according to this invention combines two popular exercises which are rebounding, in which a user uses a trampoline or a spring board and boxing in which a user uses a punching bag and/or speed bag. In addition, the invention is drawn to a metho... | 03/04/1997 |
| 5509871 | Mechanical surfboard simulator A surfboard simulator device for training users in the sport of surfing, the device including a stable base platform and an elevated surfboard unit that is interconnected to the base platform by a spring assembly that provides limited articulation to the ... | 04/23/1996 |
| 5370591 | Training vaulting board A vaulting board including ramp framing with a pliable bed sheet within the interior confines of the framing and interconnected to the framing by resilient connector means.... | 12/06/1994 |
| 5326336 | Diving board lift A diving board lift assembly for lifting a diving board from a substantially horizontal diving position to a substantially upright position is provided. The diving board having a diving end and a hinged end with the hinged end hingedly connected to a divi... | 07/05/1994 |
| 5277675 | Resilient exercise board Resilient exercise board comprising a generally planar platform having a laminated structure comprising a substantially rigid substrate and a pad of resilient material on one side of the substrate, and a plurality of resilient feet on the side of the subs... | 01/11/1994 |
| 5209709 | Slidable hinge vaulting board A vaulting device for use by a gymnast in vaulting comprising a top member connected to a base member, via a rigid control member and a movable pivot, with a plurality of resilient members positioned between the base member and the top member to bias the ... | 05/11/1993 |
| 5116045 | Sports mat, notably a movable judo mat The invention relates to a sports mat, especially a judo mat, of an elastic foam-like material (4) and possibly a sheath (7). According to the invention, the elastic foam-like material (4) is arranged on a stiff approximately circular plate (3) which has ... | 05/26/1992 |
| 5069445 | Foot and leg exercise device A foot-leg exercise device that includes two foot-supporting platforms individually swingably connected to the base structure. A spring within each platform provides resistance against downward deflection of the platform by the person's foot. Spring resis... | 12/03/1991 |
| 4998718 | Spring diving board safety apparatus A diving board safety apparatus is set forth wherein a "spring type" diving board is provided with a double acting air cylinder actuated by a manually actuatable valve to direct a solenoid valve to selectively extend or retract a telescoping section of th... | 03/12/1991 |
| 4971315 | Under-deck mounted retractable diving board A retractable diving board which is mounted on the underside of a platform or deck, preferably in the front of a pontoon boat, so it may also serve as a gangplank. The under-deck mounting of the retractable diving board leaves the deck surface uncluttered... | 11/20/1990 |
| 4824101 | Spring board A spring board is provided with an upper plate, a lower plate and interposed flanged profiles. For obtaining an optimal adaption of the spring board's shape to the local strains the local cross-section area of the flanges of the profiles varies along the ... | 04/25/1989 |
| 4666147 | Invert diving platform An invert diving platform affixed to the structure of a common pool ladder anchored to the deck of a pool for providing an elevated platform above the water level for diving. The platform is rigidly attached to the parallel railings of the ladder in a gen... | 05/19/1987 |
| 4423698 | Diving board and bracket assembly for a boat A diving board and bracket assembly for a boat which includes a generally rectangular diving board, a bracket having a generally rectangular slot for receipt therein of an end of the diving board, a fastening device for releasably securing the diving boar... | 01/03/1984 |
| 4079930 | Swimming pool diving tower A height adjustable swimming pool diving tower comprising a well-like foundation, a diving board, a central support column partially accommodated and guided in the foundation shaft and carrying the dive board, and a hydraulic stroke device for lifting or ... | 03/21/1978 |
| 4049263 | Diving board A diving board comprising a layer extending over its full length, at least one of its upper and lower surfaces being provided with thin sheets of reinforcing material, said sheets having different lengths, the lengths of said sheets diminishing from the f... | 09/20/1977 |
| 3942199 | Slip resistant surfaces for bathing fixtures, such as bathtubs and shower receptors Bathing fixtures, such as bathtubs and shower receptors and devices such as diving boards and surfboards, are provided with a contoured surface, at least within an area on which a person normally sits or stands, to provide within such area a great number ... | 03/09/1976 |
