Graphite composite racquet with aramid core

Details Graphite composite racquet with aramid core Graphite composite racquet with aramid core

1985-10-17

1987-08-04

Pinkham, Richard C.

Amusement devices: games

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

Target

273DIG7, 273DIG23, 273 73D, A63B 4910

Patent

active

046841318

ABSTRACT:
The present invention comprises a graphite composite racquet frame having a particular structure that provides internal and external shock absorption. The internal shock absorption is provided by a core material having high impact strength such as an aromatic aramid. External shock absorption is provided by a fiber reinforced plastic wrapping. The shock absorption elements allow graphite fibers to be used for construction of racquets which are commonly subject to a great deal of physical abuse such as racquetball racquets.

REFERENCES:
patent: 3690658 (1972-09-01), Howe
patent: 3755037 (1973-08-01), Erwin et al.
patent: 4066260 (1978-01-01), Rodgers
patent: 4070020 (1978-01-01), Dano
patent: 4070021 (1978-01-01), Cecka et al.
patent: 4177990 (1979-12-01), Kajiwara
patent: 4221382 (1980-09-01), Cooper et al.
patent: 4357013 (1982-11-01), Fernandez et al.
patent: 4399992 (1983-08-01), Molitor
patent: 4429873 (1984-02-01), Raemdonck
patent: 4531738 (1985-07-01), Mortvedt et al.
Model CM300 Racquetball Racquet; The Sporting Goods Dealer; Jul. 1977, p. 123.
Leach Racquetball Racquet; The Sporting Goods Dealer; Jan. 1978, p. 9.
Champion Racquetball Racquets; The Sporting Goods Dealer; Jul. 1977, back cover.
Ektelon Graphite CBK Racquetball Racquet; Advertisement; May 1981.

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