Games using tangible projectile – Player held and powered – nonmechanical projector – per se,... – With sound-deadening – vibration-damping – or shock-absorbing...
Patent
1998-03-26
1999-02-02
Chiu, Raleigh W.
Games using tangible projectile
Player held and powered, nonmechanical projector, per se,...
With sound-deadening, vibration-damping, or shock-absorbing...
473549, 473521, A63B 4902
Patent
active
058656944
ABSTRACT:
A tennis racket with handle and head coupled with an interconnection insert provides torsional elasticity and vibration damping. The racket handle has a mating extension extending toward the head and the head includes a mating extension extending toward the handle such that the handle and head mate together at the mating extensions. The handle extension has a tongue with two bores and a pair of elastic bushings extending through bores. The head mating extension comprises a recess or U-shaped channel which receives the tongue and includes a pair of securing pins extending through the bushings and being rigidly secured to the sides of the recess or channel. The bushings and pins are positioned transverse to the longitudinal extent of the handle and parallel to the racket face. The bushings perform a shock absorbing function, provide torsional elasticity and control the racket stiffness. A stabilizing bushing may be added parallel to the first two bushings and it extends through the tongue and through the sides of the recess or channel. A stabilizing pin then extends through this bushing.
REFERENCES:
patent: 1563780 (1925-12-01), Ovenshire
patent: 4007929 (1977-02-01), Figa
patent: 4033583 (1977-07-01), Ehrhart
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patent: 4367871 (1983-01-01), Schiefer
patent: 4746119 (1988-05-01), Jeanrot
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patent: 5071125 (1991-12-01), Shen
patent: 5108114 (1992-04-01), Marx
patent: 5143373 (1992-09-01), Meissner
patent: 5178387 (1993-01-01), Kuebler
patent: 5236198 (1993-08-01), Haines et al.
Chiu Raleigh W.
Mitchell Steven M.
LandOfFree
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