Bowling ball with asymmetrical core

Details Bowling ball with asymmetrical core Bowling ball with asymmetrical core

1995-03-31

1999-09-14

Pierce, William M.

Games using tangible projectile

Bowling

Ball

273DIG20, A63B 3706

Patent

active

059514078

ABSTRACT:
A bowling ball has a heavy core of given density; the core has an asymmetrical shape that affords no planes of symmetry. The core is encompassed by a spherical shell of lower density; the shell may include two layers, a relatively hard outer layer of an acrylated resin or urethane resin and a more resilient, softer inner layer, usually of urethane or filled polyester resin. A balancing weight, to compensate for finger holes to be drilled into the shell, is preferably an integral part of the bowling ball core. The density of the balancing weight is usually greater than the density of the rest of the core.

REFERENCES:
patent: Re34614 (1994-05-01), Gentiluomo
patent: 4131277 (1978-12-01), Randolph
patent: 4183527 (1980-01-01), Amburgey
patent: 4592551 (1986-06-01), Lee
patent: 4802671 (1989-02-01), Gentiluomo
patent: 5037096 (1991-08-01), Pinel, Jr. et al.
patent: 5074553 (1991-12-01), Pawlowski et al.
patent: 5125656 (1992-06-01), Fabanich
patent: 5215304 (1993-06-01), Pinel, Jr. et al.
patent: 5389042 (1995-02-01), Pinel, Jr. et al.

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