US 4,067,110 AGranted

Thumb finger hole positioning device for bowling balls

OwnerAnthony Amelioinventor

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Abstract

A bowling ball shaped device having a hollow interior and appropriate cut out wall portions with three receptacles, adjustably mounted therein, with plugs, removably disposed in the respective receptacles, provided with holes fitted to the thumb and two fingers of a bowler. A first adjustment means is provided to laterally adjust the position of the thumb hole receptacle, a second adjustment means pivotally adjusts the thumb hole receptacle toward and away from the finger holes, third and fourth adjustment means, individually pivot the pair of finger hole receptacles toward and away from the thumb hole receptacle, and a fifth adjustment means is individually provided for both of the finger hole and thumb hole receptacles whereby each of said receptacles may be circularly rocked about its inner end and locked in any desired outwardly diverging angular relationship to its normal radial axis. Gauge means is also provided to record said angular relationship.

Claims15

Dependent claims

A thumb and finger hole positioning device for bowling balls including means whereby each individual bowling ball may be fitted to the physical characteristics of an individual's bowling hand comprising:

a bowling ball shaped device (10) providing a spherical shell (12) defining an interior chamber (14);
three receptacles each with an outwardly facing opening located in said chamber including a thumb hole receptacle (32) and two finger hole receptacles, spaced from said thumb hole receptacle;
a first enlarged opening (74) in said shell surrounding the outwardly facing opening of said thumb hole receptacle (32);
a second enlarged opening in said shell surrounding the outwardly facing openings of said finger hole receptacles;
a first adjustment means (98) to transversely adjust the position of said thumb hole receptacle (32);
a second adjustment means (124) to pivotally adjust said thumb hole receptacle toward and away from said two finger hole receptacles;
third and fourth adjustment means for the respective finger hole receptacles to individually pivot said two finger hole receptacles toward or away from said thumb hole receptacle;
a fifth adjustment means comprised of like individual adjustment means for said thumb hole receptacle and each of said two finger hole receptacles comprising a universal ball joint connection (34) at the inner end of each of said three receptacles carried by individual support means journaled on a fixed, transverse rod (22), diametrically spanning said chamber, so that the outwardly facing opening of each of said receptacles may be rocked about said universal ball joint connection, and locking means to lock each receptacle in any desired outwardly diverging angular relationship to a radial axis passing through said receptacle.

5 more elements

Dependencies are inferred from the claim text.