Tennis racket

Details Tennis racket Tennis racket

1974-11-26

1976-11-09

Apley, Richard J.

Amusement devices: games

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

Target

273 73D, 273 73G, 273 73K, A63B 4902

Patent

active

039907015

ABSTRACT:
A unitary tennis racket frame is formed of a relatively strong, e.g. metal, skeleton and a molded high impact thermoplastic. The skeleton serves as a mold core for the plastic and includes a generally U shaped outwardly facing channel having a plurality of oversized string holes in the bow. The mold for the composite racket includes a plurality of movable core pins which extend into the cavity in registry with the skeleton string holes. The plastic is injection molded into the cavity and around the pins which, when retracted, form the string holes.

REFERENCES:
patent: 1381050 (1921-06-01), Agutter
patent: 1508286 (1924-09-01), Moore
patent: 1636867 (1927-07-01), Robinson
patent: 1937787 (1933-12-01), Robinson
patent: 2274788 (1942-03-01), Hatton
patent: 2742289 (1956-04-01), Allward
patent: 3083968 (1963-04-01), Takahashi
patent: 3642283 (1972-02-01), Wilkens
patent: 3814423 (1974-06-01), Shockley et al.

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