Set of bowling balls having similar properties and cores therefo

Games using tangible projectile – Bowling – Ball

Patent

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Details

273DIG20, A63B 3710

Patent

active

054375789

ABSTRACT:
The lack of uniformity in reaction characteristics of bowling balls of differing weights is avoided by a family of bowling balls having nearly identical reaction characteristics which include a plurality of the balls, each of the same nominal diameter and each differing in weight from the others by about one pound or more. Each ball includes a cover (10) and a core (14, 16, 18, 20) of a material different from the cover (10). Each core (14, 16, 18, 20) is constructed and arranged within its cover to produce a first radius of gyration about a first axis and a second, different radius of gyration about a second axis that is generally transverse to the first axis. The first radius of gyration of all of the balls is substantially identical and the second radius of gyration of all of the balls is substantially identical.

REFERENCES:
patent: 4131277 (1978-12-01), Randolph
patent: 4183527 (1980-01-01), Amburgey
patent: 4264071 (1981-04-01), Randolph
patent: 4802671 (1989-02-01), Gentiluomo
patent: 5098096 (1992-03-01), Gentil
patent: 5125656 (1992-06-01), Fabanich

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