Amusement devices: games – Aerial projectile game; game element or accessory therefor... – Target
Patent
1975-05-12
1976-10-19
Marlo, George J.
Amusement devices: games
Aerial projectile game; game element or accessory therefor...
Target
215302, 33174F, 215296, A63B 4304, A63B 3700
Patent
active
039867145
ABSTRACT:
Plugs are fitted in the thumb and fingerholes of a bowling ball so that when the fingertip enters it will touch the plug at the precise time that the finger has reached the depth found by the bowler to be most comfortable and satisfactory. The plug has a spiral passageway therein useful with a spiral removal tool for repeated non-destructive removal of the plug for cutting it to shorten it, followed by re-installation of the plug and eventual sealing in the hole when the proper fit is achieved.
REFERENCES:
patent: 2482190 (1949-09-01), Kramer
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