Racket frame

Details Racket frame Racket frame

1989-01-04

1990-06-05

Coven, Edward M.

Amusement devices: games

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

Target

273 73C, A63B 5110

Patent

active

049307789

ABSTRACT:
A racket frame having an oval head holding strings in tension via string holes formed therethrough, the string holes are selectively enlarged in transverse cross section on the side of the inner peripheral surface of the head for enlargement in effective surface area, free sweet spot adjustment and clear positioning of spots of vibration.

REFERENCES:
patent: 1665598 (1928-04-01), May
patent: 3567225 (1971-03-01), Hollis
patent: 3901507 (1975-08-01), Ormieres et al.
patent: 4462592 (1984-07-01), Legger et al.
patent: 4591165 (1986-05-01), Sines et al.

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