61
Ben Huang: Grip construction. Fulwider Patton Lee & Utecht, July 8, 1997: US05645501 (44 worldwide citation)

A shock absorbing grip for the handle of a tennis racquet or the like having a polyurethane layer bonded to a felt layer where the ratio of the thickness of the polyurethane layer to the felt layer is equal to or larger than about 0.18 and preferably the thickness ratio is about equal. The bonded-to ...


62
Ben Huang: Shock absorbing grip for racquets and the like. Fulwider Patton Lee & Utecht, December 20, 1994: US05374059 (44 worldwide citation)

A shock absorbing grip for the handle of a tennis racquet or the like having polyurethane layer bonded to a felt layer where the ratio of the thickness of the polyurethane layer to the felt layer is equal to or larger than about 0.18. The polyurethane layer is formed with a plurality of dimples, eac ...


63
Francois Rene Lacoste: Tennis rackets and similar implements with vibration damper. Patentex, Merriam Marshall Shapiro & Klose, March 2, 1976: US03941380 (44 worldwide citation)

A damping mechanism for implements such as tennis rackets, baseball bats and the like, comprising an elongated vibratable member formed of an elastomeric, energy-absorbing material. One of the ends of the vibratable member is attached rigidly to the implement at a point near an anti-node, with the l ...


64
John F Rilling, R W Goodwin: Swing velocity indicator. GRT, Jones Askew & Lunsford, November 6, 1990: US04967596 (44 worldwide citation)

An apparatus for indicating the peak tangential velocity of a swung sporting goods implement such as a tennis racquet, golf club, or baseball bat, comprises a tube having a longitudinal bore. A seismic mass is slideably disposed within the bore of the tube, and a spring operates to pull the seismic ...


65
Kirk R Fisher: Modular flooring recreational use. Edgar W Averill Jr, May 18, 1999: US05904021 (44 worldwide citation)

A modular flooring surface freely supported on the upper surface of a flat floor. The modular flooring surface is made up of shaped tiles which snap together to form a playing surface for sports such as roller hockey, tennis, basketball and the like. The tiles of the flooring surface are preferably ...


66
Howard Head: Tennis racket. Prince Manufacturing, Seidel Gonda & Goldhammer, December 28, 1976: US03999756 (43 worldwide citation)

The tennis racket has a strung surface which is larger than the strung surface of a conventional racket, particularly in regard to its dimension in a longitudinal direction from the frame tip toward the handle shaft of the racket. The conventional length, weight, and balance which have proven necess ...


67
Gary D McMurry: Winged practice ball. Paul S Rooy, January 2, 1996: US05480143 (43 worldwide citation)

A practice ball comprised of mutually perpendicular X-, Y- and Z-members. A plurality of wings interconnect the X-, Y- and Z- members. The shape of said wings skeletally defines the shape of the practice ball. The wings and reduced weight of the practice ball provide for a shorter trajectory for the ...


68
Gerard F Sweeton: Propulsion device for tennis balls and like spherical objects. Prince Manufacturing, Sperry and Zoda, June 7, 1977: US04027646 (43 worldwide citation)

A propulsion device is provided, designed especially for discharging tennis balls for practice purposes, at selected angles of inclination, and at a predetermined, selected velocity. Employed in the device is a distributor, which is disposed between a hopper and an air pressurizing drum, the distrib ...


69
Oppenheimer Jess: Training device. July 27, 1971: US3595583 (43 worldwide citation)

A device for practicing a swing in which an elongate shaft is secured to extend forwardly of a person and a guy is pivotally secured to the shaft and to a forward portion of an instrument to be swung whereby to determine the arc of said swing.In other embodiments, the arc is determined by guiding el ...


70
Doessel James H, McKenna Patrick A: Plastic tennis racket having predetermined cross sections effecting flexibility. March 7, 1972: US3647211 (42 worldwide citation)

A tennis racket frame of molded plastic includes head, shaft and handle portions with the cross sections thereof, together with the characteristics of the plastic material, providing maximum flex at the upper end of the head, secondary flexing at the throat area adjacent the head, lesser flexing at ...



Click the thumbnails below to visualize the patent trend.