Abstract: A bowling ball thumb insert has a first and second sleeve. The second sleeve is retained in the first sleeve. The first sleeve has a coupling mechanism including a ledge extending radially inward towards the center of the sleeve. A positioning gap is adjacent the ledge. A second sleeve is positioned inside the first sleeve. The second sleeve includes a coupling mechanism. The second sleeve coupling mechanism includes a wing extending radially outward from the outer surface of the second sleeve. The wing passes through the positioning gap. When one of the sleeves is rotated with respect to the other, the sleeves lock together.

Abstract: Disclosed is a finger tape for aiding bowling. The thumb, the middle finger and the ring finger are inserted into holes formed in a bowling ball. Upon bowling, a player grips the ball by inserting the thumb, the middle finger and the ring finger into the holes formed in the ball. For releasing and rolling the ball, the thumb is instantly slipped out of the hole, followed by the middle finger and the ring finger while spinning the ball. Accordingly, an elasticized cotton tape with gravure printed acryl resin adhesive having different effects depending on actions of the fingers is attached to the thumb, the middle finger and the ring finger to obtain effective bowling results, wherein the thumb tape slides easily and the finger tape provides better grip, based on differing amounts of hardener in the adhesive.

Abstract: A system and method for producing a bowling ball, where the thumb hole and finger holes in the bowling ball are angled to accurately match the anatomical requirements of the bowler's hand. The system includes a measuring jig assembly for obtaining data on where to drill finger holes in a bowling ball. The measuring jig assembly has holes for the thumb, the middle finger and the ring finger. The position of the thumb hole can be moved in a unique manner so that the thumb hole need not be located below the middle finger hole and the ring finger hole. Furthermore, the angle at which each of the holes enters the measuring jig assembly is adjustable across a range of motion that mimics that achievable by the tips of the thumb, middle finger and ring finger of a bowler. Accordingly, the holes can be adjusted to unique angles required by a particular bowler's hand anatomy. The data retrieved from the measuring jig assembly is then used to produce a bowling ball customized to a bowler's hand.

Abstract: A bowling apparatus including a first support adapted to cover at least a portion of at least one finger of a bowler; a second support adapted to cover at least a wrist of a hand of a bowler; and an adjustable support comprising one end connected to the first support and another end pivotally connected to the second support.

Abstract: A finger hole insert for a bowling ball which is formed of a resilient tubular body and is adapted to be inserted into a finger hole. The insert has an oblong cylindrical inner wall surface defining finger openings at opposite terminal ends of the insert which are sized to permit insertion of a bowler's finger therein. The finger openings have thickened parallel planar finger pads therein adapted for cushioning the bowler's finger. The finger openings also have opposed arcuate finger pads for augmenting the spin and lift applied during delivery of the bowling ball. In this manner, the bowler has a preferential choice between the two functions provided by each finger opening of the insert.