Tennis racket frame

Details Tennis racket frame Tennis racket frame

1976-03-02

1978-10-31

Apley, Richard J.

Amusement devices: games

Aerial projectile game; game element or accessory therefor...

Target

273 75, A63B 4910

Patent

active

041230540

ABSTRACT:
A racket frame made of reinforced plastic is manufactured wherein the reinforcement is constituted by two carbon fiber strips around which are braided glass fiber strings in order to confer the frame both a lattice beam and a tubular beam structure, said reinforcement extending inside the heart and the handle of the racket.

REFERENCES:
patent: 1636867 (1927-07-01), Robinson
patent: 2878020 (1959-03-01), Robinson
patent: 2923652 (1960-02-01), Oka
patent: 3606326 (1971-09-01), Sparks et al.
patent: 3690658 (1972-09-01), Howe
patent: 3755037 (1973-08-01), Erwin et al.
patent: 3787051 (1974-01-01), Johns
patent: 3833218 (1974-09-01), Frenkel et al.
patent: 3905598 (1975-09-01), Ballog
patent: 3930920 (1976-01-01), Kicherer
patent: 3949988 (1976-04-01), Staufer
patent: 4013290 (1977-03-01), Stevens

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