Shock-absorbing racket frame made from fiber reinforced plastic

Details Shock-absorbing racket frame made from fiber reinforced plastic Shock-absorbing racket frame made from fiber reinforced plastic

1991-12-13

1993-09-07

Lesmes, George F.

Stock material or miscellaneous articles

Hollow or container type article

Polymer or resin containing

273 73R, 273 73G, 273 73J, 273 73F, B32B 3104, A63B 4910

Patent

active

052427242

ABSTRACT:
A shock-absorbing racket frame made of fiber reinforced plastic material is mainly composed of a head frame and a shaft-handle portion. The racket frame is further provided with a thin plastic tube wrapped around by a first outer layer made of fiber reinforced plastic material and intended to form the head frame and the front segment of the shaft-handle portion. The thin plastic tube is further wrapped around by a second outer layer of fiber reinforced plastic material intended to form the hand grip of the shaft-handle portion. A reinforced surface of fiber reinforced plastic material is disposed across the gap between the two outer layers. The fibers making up the head frame are thus interrupted and disconnected with the fibers making up the hand grip of shaft-handle portion. The transmission of the shock wave from the head frame is therefore effectively interrupted at the position where the break of fibers takes place, thereby resulting in the shock wave being mitigated to an extent that the player's hand holding the racket is not subjected to injury.

REFERENCES:
patent: 4177990 (1979-12-01), Kajiwara
patent: 4203596 (1980-05-01), Nagamoto
patent: 5034082 (1991-07-01), Nolan
patent: 5039096 (1991-08-01), Chen
patent: 5071125 (1991-12-01), Shen
patent: 5092594 (1992-03-01), Jang

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