Racket frame

Amusement devices: games – Aerial projectile game; game element or accessory therefor... – Target

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Details

273 73F, 264 451, A63B 4910

Patent

active

041779908

ABSTRACT:
A fiber reinforced racket frame advantageously usable for tennis rackets includes a discontinuous foamed resin core made up of a plurality of core pieces longitudinally aligned in end-to-end relationship which preferably vary in the transverse cross-sectional characteristic and/or density from piece to piece. Longitudinal discontinuity and, preferably, change in at least one of the transverse cross-sectional characteristics and density effectively hinder direct and smooth transmission to players' hands of the impact imposed on the playing face of the racket. The manufacturing process is greatly simplified so as to fit automatization and mass-production.

REFERENCES:
patent: 1588139 (1926-06-01), Penny
patent: 3265401 (1966-08-01), Spier
patent: 3727295 (1973-04-01), Gildemeister
patent: 3771805 (1973-11-01), Ishida
patent: 3814423 (1974-06-01), Shockley et al.
patent: 3949988 (1976-04-01), Staufer
patent: 3993308 (1976-11-01), Jenks
patent: 4061520 (1977-12-01), Cecka et al.

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