61
Ben Huang: Grip construction. Fulwider Patton Lee & Utecht, July 8, 1997: US05645501 (47 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
Allan C Hoffman: Method of making tennis ball with a single core and cover bonding cure. Poms Smith Lande & Rose, August 1, 1989: US04853056 (47 worldwide citation)

A method of making tennis balls by a single core part and fabric piece bonding step is disclosed wherein an assembly of core parts, including a pair of hemispheric core halves, and fabric cover pieces, including a pair of figure eight fabric dumbbells, are assembled to one another to a subassembly o ...


63
Edward A Dellis: Moldable hand grip. Alvin S Blum, October 20, 1992: US05155878 (47 worldwide citation)

Hand grips for the handles of devices such as motorcycles, tennis rackets, and guns can be custom-molded to fit exactly the contours of the user's hand. The grip has an inner layer that is thermoplastic and moldable at molding temperatures reached by heating with hot water or a hair dryer. An adhere ...


64
Yong Hong Chang: Foldaway table tennis support structure. Bacon & Thomas, August 9, 1988: US04762321 (47 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. ...


65
Koch Alvin F: Athletic testing device. Von Behren Esq Norvell E, July 29, 1975: US3897058 (47 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 ...


66
Larry J Ponza: Tennis and baseball dispensing apparatus. June 30, 1987: US04676504 (46 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 ...


67
Gerard F Sweeton: Propulsion device for tennis balls and like spherical objects. Prince Manufacturing, Sperry and Zoda, June 7, 1977: US04027646 (46 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 ...


68
Holloway Donald P, Payne William H, Peeler Donald H: Device having coacting wheels for projecting tennis balls. Metaltek, December 11, 1973: US3777732 (46 worldwide citation)

A ball throwing machine ejects tennis balls in regular sequence and at a controlled velocity to simulate tennis service from an opponent during practice sessions. The machine is adapted to intermittently vary the vertical and horizontal angles of ball ejection thereby providing game-like situations. ...


69
Ugur Ortabasi: Bifacial lightweight array for solar power. Watson Cole Grindle Watson P L L C, November 23, 1999: US05990413 (46 worldwide citation)

A laminate includes bifacial solar cells that can receive and convert sunlight incident from either side. The laminate is held in a frame by high tensile cords that are strung like the cords in a tennis racket. The resulting assembly receives direct sunlight from one side and light reflected through ...


70
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 ...