Abstract: A game ball having an inner bladder and a layer of yarn wound thereabout. The yarn layer is formed by a first strand of synthetic material and a second strand of natural material. As these strands are being simultaneously wound on the inner bladder, an adhesive is applied to the strand of synthetic material. Since the strands contact each other on the bladder, the strands of natural material absorb adhesive from that applied previously to the strands of synthetic material.
Abstract: A molded game ball, particularly for volley-ball, hand ball and soccer is made by winding a layer of fibrous material on an inflated rubber bladder, applying a sheet of a rubber mixture with a vulcanizing agent on this layer, imprinting in a cold mold a network of fields on this layer indicating places where cover segments have to be bonded thereon so that do not get in touch one with another on their periphery and by finally pressing this semiproduct with bonded cover segments in a smooth mold at temperatures for vulcanizing.
Type:
Grant
Filed:
April 11, 1978
Date of Patent:
February 5, 1980
Assignee:
GALA, narodni podnik
Inventors:
Veroslav Svub, Milan Burian, Vladimir Uruba, Zdenek Figalla