Composite dent ball
AssigneeSunbeam Plastics Corporation
InventorClifford M. Ferree
Life of this patent
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Abstract
A large size barrel-shaped dent ball for removing dents in curved and tapered tubing having a diameter between 21/2 and 41/2 inches such as a tuba. The ball is constructed with a hardwood core and a steel band about the center portion of its length. An axial steel tube is also inserted in the hardwood core to facilitate use and removal of the ball from the tube. This composite structure reduces the overall weight so that the ball can be manipulated during use. A cable tool on which the dent ball can be strung between two metal impact balls is also presented. Reciprocation of the cable provides repeated impact of a metal impact ball against the barrel-shaped dent ball to drive the dent ball under and past the dent in a dent removal and tool retrieval direction.
Claims10
A 21/2 inch to 41/2 inch diameter composite barrel-shaped dent ball for removing dents from curved tubing comprising:
- a hard wood core with a centrally located external groove extending approximately one-third of the overall length of the ball;
- a steel band seated within the core groove circumscribing the central portion of the length of said ball core,
- the exterior profile of said ball being a continuous barrel shape embracing the central steel band wtih wood on both sides thereof.
A 21/2 inch to 41/2 inch diameter composite barrel-shaped dent ball for removing dents from curved tubing comprising:
- a hardwood core material with a steel band circumscribing the central portion of the length of the ball, the exterior profile of said ball being a continuous barrel shape embracing the central steel band with wood on both sides thereof;
- and
- a metal tube located at the axis of said barrel-shape dent ball extending the length of said ball.
A 21/2 inch to 41/2 inch diameter composite barrel-shaped dent ball for removing dents from curved tubing comprising:
- a hardwood core material having an exterior barrel shape and a length equal to approximately the maximum diameter of the ball;
- an exterior groove at the center of the length of said ball extending approximately 1/3 the length thereof;
- steel band fitted in said groove and having a exterior surface which is continuous with the barrel-shaped exterior surface of the ball;
- and
- a central steel tube located at the axis of said ball and extending the length thereof.
Dependencies are inferred from the claim text.