Games using tangible projectile – Player held and powered – nonmechanical projector – per se,... – With sound-deadening – vibration-damping – or shock-absorbing...
Patent
1996-10-25
1998-01-27
Graham, Mark S.
Games using tangible projectile
Player held and powered, nonmechanical projector, per se,...
With sound-deadening, vibration-damping, or shock-absorbing...
473564, A63B 5906
Patent
active
057117284
ABSTRACT:
A new Shock and Vibration Absorbing Ball Bat for absorbing the shock and vibration forces generated when the bat strikes a ball before the forces reach the hands of the batter. The inventive device includes a hitting portion, a handle portion, an intermediate portion between the hitting portion and the handle portion, and a series of knurls provided along the intermediate portion of the bat above the handle portion and below the hitting portion. The knurls are coaxially aligned with the intermediate portion of the bat and define a peripheral wall which has a diameter greater than that of the intermediate portion of the bat immediately adjacent the knurl whereby the knurl is radially enlarged relative to the intermediate portion of the bat immediately adjacent the knurl. In a first embodiment, each of the knurls is a convex knurl wherein the peripheral wall of the convex knurl is convex-shaped. In a second embodiment, each of the knurls is a cylindrical knurl wherein the peripheral wall of the cylindrical knurl is cylindrical-shaped.
REFERENCES:
patent: 537927 (1895-04-01), Kennedy
patent: 2031161 (1936-02-01), Hamel
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