61
Yong Hong Chang: Foldaway table tennis support structure. Bacon & Thomas, August 9, 1988: US04762321 (46 worldwide citation)

A folding tennis table having a pair of planar surfaces, each being one half of the table playing surface. The halves are hingedly connected at adjacent edges by support structure. The support structure is comprised of four brackets, two brackets being placed on the lower surface of each table half. ...


62
Kirk R Fisher: Modular flooring recreational use. Edgar W Averill Jr, May 18, 1999: US05904021 (46 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 ...


63
Ben Huang: Grip construction. Fulwider Patton Lee & Utecht, July 8, 1997: US05645501 (45 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 ...


64
Ben Huang: Shock absorbing grip for racquets and the like. Fulwider Patton Lee & Utecht, December 20, 1994: US05374059 (45 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 ...


65
Larry J Ponza: Tennis and baseball dispensing apparatus. June 30, 1987: US04676504 (45 worldwide citation)

Ball dispensing apparatus for hitting practice includes a ball retainer for retaining and sequentially delivering balls to one end thereof, a lever rotatably mounted on a shaft at the one end of the retainer for engaging and lifting a ball from the retainer upon rotation of the lever, and an actuato ...


66
Koch Alvin F: Athletic testing device. Von Behren Esq Norvell E, July 29, 1975: US3897058 (45 worldwide citation)

An athletic testing device for use by athletes in a game where an athletic club is utilized for playing the game and where a controlled force application on the club handle by the user's hand or hands is desirous as the club is swung. The testing device is adapted to be used with a golf club, a tenn ...


67
Alvin J Marx: Brace apparatus. September 20, 1977: US04048991 (45 worldwide citation)

An improved wrist brace maintains the wrist extended and slightly ulnar deviated (so called position of function), providing support and impact counterforce bracing. The brace is utilized for play by sufferers of "tennis elbow" (tendonitis of the conjoined tendon of the extensor communis and extenso ...


68
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 ...


69
Howard Head: Tennis racket. Prince Manufacturing, Seidel Gonda & Goldhammer, December 28, 1976: US03999756 (44 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 ...


70
Gerard F Sweeton: Propulsion device for tennis balls and like spherical objects. Prince Manufacturing, Sperry and Zoda, June 7, 1977: US04027646 (44 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 ...



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