Removable bowling ball thumb insert

Details Removable bowling ball thumb insert Removable bowling ball thumb insert

1995-01-05

1996-05-28

Pierce, William M.

Games using tangible projectile

Bowling

Ball

473130, A63B 3700

Patent

active

055205828

ABSTRACT:
A bowling ball thumb insert including a generally planar plug having an upper surface, a lower surface, a peripheral edge interconnecting the surfaces and thereby defining a thickness, and a bore disposed therethrough and with the plug positionable within a thumb hole of a bowling ball; a plurality of sleeves with each sleeve having a circular planar bottom wall with an interior top surface, an exterior bottom surface, a peripheral edge extended between the surfaces, a bore disposed therethrough, and a tubular side wall having a characteristic thickness, an upper end, and a lower end with the lower end coupled with the interior surface of the bottom wall; and a bolt extended through the bore of a sleeve and the bore of the plug, the bolt further projected outwards from the lower surface of the plug for threaded securement to a complimentary threaded bore formed at a bottom end of a thumb hole of a bowling ball.

REFERENCES:
patent: 4892308 (1989-01-01), Gaunt
patent: 4968033 (1990-11-01), Aluotto
patent: 5118106 (1992-06-01), Goldman

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