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U.S. Senator Smith of Indiana ; After seeing Samuel Morse demonstrate the telegraph.
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AbstractA board, such as a ski or snowboard, that includes a piezoelectric damper. A sensor such as a piece of piezoelectric material is located on the body of the board such that, as the board vibrates or deforms, the piezoelectric sensor is also deformed. As the piezoelectric sensor deforms, it produces an electrical signal that is provided to a control circuit. The control circuit receives the electrical signal and generates a control signal of proportional amplitude and frequency, but an inverse waveform to the sensed vibration. The control signal causes a piezoelectric damper to stiffen and resist deformation of the board, thus damping the vibration. The sensed signal may also be stored within a memory device and subsequently downloaded to provide a skier profile for analysis.Other References
| InventorsAssigneeApplicationNo. 110629 filed on 07/06/1998US Classes:280/602, With camber or flexibility control280/607, With foot supporting plate or portion280/610Laminated or synthetic materialField of Search280/602, With camber or flexibility control280/601, Skis280/607, With foot supporting plate or portion280/610, Laminated or synthetic material280/809SKI OR SKATE APPLIANCE OR ATTACHMENTExaminersPrimary: Johnson, Brian L.Assistant: Avery, Bridget Attorney, Agent or FirmUS Patent References2258046, 2539224, 3260531, 3537717, 3644919, 3774923, 3894437, 4288088, Brake assembly for skateboardIssued on: 09/08/1981 Inventor: Harrison4291894, Electrical ski boot release Issued on: 09/29/1981 Inventor: D'Antonio , et al.4300786, Snow ski with adjustable camber Issued on: 11/17/1981 Inventor: Alley4377297, Ski, particularly Alpine ski Issued on: 03/22/1983 Inventor: Staufer4383702, Safety binding for a ski Issued on: 05/17/1983 Inventor: Salomon4436321, Electrically releasable safety ski binding Issued on: 03/13/1984 Inventor: Storandt , et al.4463968, Method for programmed release in ski bindings Issued on: 08/07/1984 Inventor: Hull4516110, Ski stress signaling device Issued on: 05/07/1985 Inventor: Overmyer4516791, Safety ski binding Issued on: 05/14/1985 Inventor: Riss , et al.4526397, Electronic safety ski binding having oblique, orthogonal transducers Issued on: 07/02/1985 Inventor: Richert4545598, Safety ski binding Issued on: 10/08/1985 Inventor: Spitaler , et al.4563020, Ski vibration damper Issued on: 01/07/1986 Inventor: Arieh , et al.4565386, Ski Issued on: 01/21/1986 Inventor: Crainich4565940, Method and apparatus using a piezoelectric film for active control of vibrations Issued on: 01/21/1986 Inventor: Hubbard, Jr.4592567, Modifiable stiffness ski Issued on: 06/03/1986 Inventor: Sartor4626730, Method and apparatus for active control of vibrations Issued on: 12/02/1986 Inventor: Hubbard, Jr.4644801, Surface-area pressure transducer and line-selection circuit for use therewith Issued on: 02/24/1987 Inventor: Kustanovich4647061, Ski stiffened in torsion by a bellows-like member Issued on: 03/03/1987 Inventor: Girard4696487, Ski which is stiff in torsion and relatively weak in beam Issued on: 09/29/1987 Inventor: Girard4697820, Ski Issued on: 10/06/1987 Inventor: Hayashi , et al.4740009, Ski, in particular a cross-country ski Issued on: 04/26/1988 Inventor: Hoelzl4804200, Sliding device, particularly alpine ski Issued on: 02/14/1989 Inventor: Kuchler4834407, Pyrotechnic device for a skateboard Issued on: 05/30/1989 Inventor: Salvo4848784, Ski with damper processed in its core Issued on: 07/18/1989 Inventor: Scherubl4848786, Ski with balancing elements Issued on: 07/18/1989 Inventor: Mankau4892325, Motion detector Issued on: 01/09/1990 Inventor: D'Antonio4896895, Shock-absorbing element for skis Issued on: 01/30/1990 Inventor: Bettosini4906192, Electronic computerized simulator apparatus Issued on: 03/06/1990 Inventor: Smithard, et al.4940914, Vibration absorbing apparatus Issued on: 07/10/1990 Inventor: Mizuno, et al.4980597, Ultrasonic motor with vibration suppressor Issued on: 12/25/1990 Inventor: Iwao5010774, Distribution type tactile sensor Issued on: 04/30/1991 Inventor: Kikuo, et al.5049079, Closed loop ski simulation and instructional system Issued on: 09/17/1991 Inventor: Furtado, et al.5051605, Switch for electronic sports equipment Issued on: 09/24/1991 Inventor: D'Antonio, et al.5079949, Surface pressure distribution detecting element Issued on: 01/14/1992 Inventor: Tamori5097171, Piezo-actuator shock absorber damping force controlling system having abnormality detection function Issued on: 03/17/1992 Inventor: Matsunaga, et al.5143394, Ski provided with a vibration damping device Issued on: 09/01/1992 Inventor: Piana5199734, Ski Issued on: 04/06/1993 Inventor: Mayr5270607, Vibration control apparatus Issued on: 12/14/1993 Inventor: Terajima5284357, Apparatus and method for damping deflections and vibrations in skis Issued on: 02/08/1994 Inventor: Tinkler5312258, Dry land snowboard training device Issued on: 05/17/1994 Inventor: Giorgio5332252, Shock absorption device for a ski Issued on: 07/26/1994 Inventor: Le Masson, et al.5332253, Device for the modifying the pressure distribution of a ski along its sliding surface Issued on: 07/26/1994 Inventor: Couderc, et al.5332254, Ski device Issued on: 07/26/1994 Inventor: Juhasz5333889, Board for sliding, provided with a device for damping vibrations Issued on: 08/02/1994 Inventor: Piegay, et al.5342077, Snow surfboard having asymmetric characteristics Issued on: 08/30/1994 Inventor: Abondance5415633, Remotely steered catheterization device Issued on: 05/16/1995 Inventor: Lazarus, et al.5590908, Sports board having a pressure sensitive panel responsive to contact between the sports board and a surface being ridden Issued on: 01/07/1997 Inventor: Carr5775715, Piezoelectric damper for a board such as a snow ski or snowboard Issued on: 07/07/1998 Inventor: Vandergrift5794080, Piezoelectric vibration angular velocity meter and camera using the same Issued on: 08/11/1998 Inventor: Watanabe, et al.5806875, Clutch engageable damping and stiffening system Issued on: 09/15/1998 Inventor: Bonvallet5826909, Relocatable electronic ski camber sensor Issued on: 10/27/1998 Inventor: Brommer, et al.5857694Adaptive sports implement Issued on: 01/12/1999 Inventor: Lazarus, et al. Foreign Patent References
International ClassA63C 005/07 |