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US 5,181,717 AGranted
Inflated sports ball
AssigneeAdidas Sarragan France
InventorsJean-Marie Donntag, Jacques Casper
Life of this patent
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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.
Claims12
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.
2 more elements
Dependencies are inferred from the claim text.