Richard Robert Cross

US Patent:

42589479, Mar 31, 1981

Filed:

Jul 5, 1979

Appl. No.:

6/054977

Inventors:

Donald C. Thompson - Stockton CA
Richard L. Cross - Manteca CA
Jimmie Rose - Manteca CA

International Classification:

A65G 700
A63B 4302

US Classification:

294 15

Abstract:

A handle attachment for a bowling ball includes a hand grip, a shank extending from the grip and a radially expansible plug extending from the shank. A mechanism for changing the length and therefore the radius of the plug between a locking position and a release position is controllable at the grip in a way that locks the mechanism in the locking position when the grip is grasped by the hand as in carrying a bowling ball. In the release position, the plug is inserted into and withdrawn from the thumb hole of the ball, and in the locking position the plug securely engages the sidewall defining the thumb hole thereby attaching the handle attachment securely to the bowling ball.