Composite prepeg and tennis rackets using the same

Details Composite prepeg and tennis rackets using the same Composite prepeg and tennis rackets using the same

1995-04-06

1996-01-09

Ryan, Patrick J.

Stock material or miscellaneous articles

Coated or structually defined flake, particle, cell, strand,...

Rod, strand, filament or fiber

428413, 428902, 428 361, 428 363, 273 73F, 273DIG23, B32B 100, A63B 4910, A63B 4912

Patent

active

054827744

ABSTRACT:
A composite prepreg for producing a tennis racket, which is light and tough and superior in flexibility and vibration absorption abilities, comprises thermosetting resin and reinforcing fibers, wherein the reinforcing fibers are a combination of (a) aromatic polyamide or polyester fibers and (b) carbon fibers, the fibers (a) being formed into a first type of strand and the fibers (b) being formed into a second type of strand, the first and second types of strand being arranged with certain regularity. The present invention is also directed to a tennis racket comprising a circular frame constituting a ball hitting area and a shaft connecting with the circular frame, the frame and shaft having a plurality of layers structured so that at least one layer is formed from the above described composite prepreg.

REFERENCES:
patent: 4429873 (1984-02-01), Van Raemdonck
patent: 4532275 (1995-07-01), Aito et al.

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