Sports bats

Details Sports bats Sports bats

1997-01-24

1998-10-06

Brown, Theatrice

Games using tangible projectile

Player held and powered, nonmechanical projector, per se,...

Bat

773330, A63B 5906

Patent

active

058169636

ABSTRACT:
An "isoharmonic" sports bat, for example a baseball bat or cricket bat, includes a hitting surface for impact with a ball, wherein the duration of a half cycle of a selected mode of vibration of the hitting surface when in contact with the ball is approximately equal to the contact time between the hitting surface and the ball during an average impact. This allows the vibrational energy of the bat to be returned efficiently to the ball, which improves the coefficient of restitution, and the peak contact force between the bat and the ball may be reduced. The hitting surface may be formed by a plate attached to the bat.

REFERENCES:
patent: 4241919 (1980-12-01), Foreman
patent: 4600193 (1986-07-01), Merritt
patent: 4792140 (1988-12-01), Yamaguchi
patent: 4809978 (1989-03-01), Yamaguchi
patent: 4928965 (1990-05-01), Yamaguchi
patent: 5104123 (1992-04-01), Okitus
patent: 5209483 (1993-05-01), Gedney
patent: 5410798 (1995-05-01), Lo
patent: 5421572 (1995-06-01), MacKay, Jr.
British Search Report dated 17 Dec., 1996, British Appl. No. GB 9601361.0.

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