Bowling ball with weight block

Details Bowling ball with weight block Bowling ball with weight block

1994-09-08

1995-10-31

Pierce, William M.

Games using tangible projectile

Bowling

Ball

273DIG20, A63B 3706

Patent

active

054624916

ABSTRACT:
A bowling ball comprises a core surrounded by a cover stock. The core comprises a body with its center positioned substantially coincident with the bowling ball's geometric center and a weight block positioned as close to the outer surface of the bowling ball as possible. The weight block functions as a top weight to offset the mass lost in the bowling ball due to the drilling of gripping holes and balance holes. Furthermore, the weight block provides the three ounce out of balance maximum between the top and bottom of the bowling ball to produce a gyroscopic steering effect which creates a sharp break in the path of the bowling ball at the back end of the bowling lane. The body of the core lowers the moment inertia of the bowling ball to produce a ball with stable rolling characteristics.

REFERENCES:
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patent: 4121828 (1978-10-01), Amburgey
patent: 4264071 (1981-04-01), Randolph
patent: 4320899 (1982-03-01), Salvino
patent: 4592551 (1986-06-01), Lee
patent: 5037096 (1991-08-01), Pinel, Jr. et al.
patent: 5046731 (1991-09-01), Zelinski
patent: 5074553 (1991-12-01), Pawlowski et al.
patent: 5125656 (1992-06-01), Fabanich
patent: 5149089 (1992-09-01), Zelinski
patent: 5215304 (1993-06-01), Pinel, Jr. et al.
patent: 5238245 (1993-08-01), Sposato

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