Bowling ball including removable finger grip insert

Details Bowling ball including removable finger grip insert Bowling ball including removable finger grip insert

1979-09-07

1981-01-27

Marlo, George J.

Amusement devices: games

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

Target

A63B 3700, A63B 4304

Patent

active

042471028

ABSTRACT:
A removable interchangeable thumb or finger grip insert for the thumb or finger hole of a bowling ball. The insert is generally cylindrical and hollow and is formed with a slotted resilient hollow bottom axial internally and externally threaded stud for threadedly engaging in the bottom of the bowling ball hole. A tapered adjustable wedging screw is engaged in the hollow stud for expanding it to tightly grip the bowling ball. The screw has a square bore engageable by a correspondingly-shaped L-shaped square tool bar. A spanner wrench tool is provided, the bottom of the wrench tool having a pair of spaced depending pins engageable in holes provided in the bottom of the insert for rotating same.

REFERENCES:
patent: 533011 (1895-01-01), Huntoon
patent: 2210528 (1940-08-01), Darby
patent: 2436976 (1948-03-01), Seurynck
patent: 2844375 (1958-07-01), Nestor
patent: 3039774 (1962-06-01), Gerlach
patent: 3129002 (1964-04-01), Bednash

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