Game ball
AssigneeLannom Manufacturing Company, Inc.
InventorJesse H. Heald, Jr.
Life of this patent
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Abstract
A ball is disclosed formed with a spherical core of polyurethane foam covered with a thin winding of cotton yarn and with a hand stitched outer cover; the ball is formed in a mold by providing a polymeric isocyanate with a mixture of water and a polyol crosslinking catalyst with the ratio between the isocyanate and the mixture of the catalyst and the water being variable to provide a ball of desired resilience and density so that the ball formed by the method can duplicate such characteristics as found in conventional baseballs and softballs.
Claims15
A composite ball having the appearance, physical characteristics and dimensions of a conventional baseball including a cork and rubber center, yarn windings, and a leather cover comprising a spherical core member formed of flexible and resilient molded polyurethane foam and a cover portion comprising a leather member stitched over and enclosing said core member wherein said core member is formed of polyurethane foam of such density and resilience as to give said composite ball essentially the same rebound qualities, hardness, size, feel and sound as said conventional baseball so as to be usable in organized league play of baseball under the rules of baseball.
A composite ball having the appearance, physical characteristics and dimensions of a conventional softball including a core of cork or kapok, yarn windings, and a leather cover comprising a spherical core member formed of flexible and resilient molded polyurethane foam and a leather cover portion enclosing and stitched over said core portion wherein said core portion is formed of polyurethane foam of such density and resilience as to give said composite ball essentially the same rebound weight, hardness, size, feel and sound qualities as said conventional softball so as to be usable in organized league play of softball.
Dependencies are inferred from the claim text.