Inflated sports ball
First Claim
Patent Images
1. An inflated bladder-type sports ball, comprising:
- wall means defining an inflated bladder having an external surface;
a cover supported on said external surface and enclosing said inflated bladder;
said cover comprising a layer of synthetic plastic material having a substantially uniform thickness, said layer including an inner core portion which is foamed, and an external skin, integrally provided on said core portion, said skin being substantially non-foamed;
said synthetic plastic material of core portion and skin being made of polyurethane or a copolymer of polyurethane and polyurea;
said layer as a whole being between 1.5 and 5 mm thick, said core portion being between 1.0 and 3.0 mm thick and said skin being between 0.5 and 2 mm thick.
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Abstract
An inflated bladder-type sports or leisure ball, e.g., a football, having as a cover, an external layer of polyurethane or polyurethane-polyurea foam with compact integral skin. The thickness of the covering layer is between about 1.5 and about 5 mm, whereas the thickness of the compact integral skin is between about 0.5 and about 2 mm. The ball may be of a hand-sewn, laminated or overmolded type. A process for manufacturing such balls is disclosed.
120 Citations
12 Claims
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1. An inflated bladder-type sports ball, comprising:
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wall means defining an inflated bladder having an external surface; a cover supported on said external surface and enclosing said inflated bladder;
said cover comprising a layer of synthetic plastic material having a substantially uniform thickness, said layer including an inner core portion which is foamed, and an external skin, integrally provided on said core portion, said skin being substantially non-foamed;said synthetic plastic material of core portion and skin being made of polyurethane or a copolymer of polyurethane and polyurea; said layer as a whole being between 1.5 and 5 mm thick, said core portion being between 1.0 and 3.0 mm thick and said skin being between 0.5 and 2 mm thick. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification