Bowling ball

Details Bowling ball Bowling ball

1984-09-17

1986-08-05

Marlo, George J.

Amusement devices: games

Aerial projectile game; game element or accessory therefor...

Target

273 58H, A63B 3700, A63B 3708

Patent

active

046038612

ABSTRACT:
A bowling ball having a spherical solid core and a spherical mantle which is hollow in the center to accommodate the core in closely adjacent surrounding relationship. A layer of lubricant, such as oil or polytetrafluoroethylene, around the core allows for independent rotation of the core and the mantle to increase the "mixing" action of the ball then it strikes the pins due to separation of active and passive masses of the mantle and the core.

REFERENCES:
patent: 1849414 (1932-03-01), Turnbull
patent: 2361423 (1944-10-01), Snyder
patent: 3517933 (1970-06-01), Malkin
patent: 3655197 (1972-04-01), Milbaum

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