Manufacture of polyurethane foam ball

Details Manufacture of polyurethane foam ball Manufacture of polyurethane foam ball

2011-07-26

2011-07-26

Cooney, John (Department: 1765)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Cellular products or processes of preparing a cellular...

C156S245000, C428S423100, C473S606000, C521S121000, C521S124000, C521S126000, C521S127000, C521S129000, C521S130000, C521S131000, C521S163000, C521S170000

Reexamination Certificate

active

07985779

ABSTRACT:
The present invention relates to a novel method for manufacturing a cellular elastomeric polyurethane foam ball. The product polyurethane foam ball may be used as a core for a tennis ball which meets ITF specifications for tennis balls, including weight, diameter, bound, forward deformation and return deformation.

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