Leather-like sheet for balls

Details Leather-like sheet for balls Leather-like sheet for balls

2007-08-21

2007-08-21

Watkins, III, William P. (Department: 1772)

Stock material or miscellaneous articles

Structurally defined web or sheet

Continuous and nonuniform or irregular surface on layer or...

C428S904000, C428S131000, C473S594000, C473S614000, C473S607000, C473S604000, C473S603000, C473S596000

Reexamination Certificate

active

10791779

ABSTRACT:
The leather-like sheet for balls of the present invention comprises a fiber-entangled fabric and a porous surface layer disposed on the surface of the fiber-entangled fabric. The porous surface layer has a pattern formed by a plurality of outwardly projecting pebbles and valleys between the pebbles. A plurality of microholes having an average diameter of 5 to 100 μm are formed on surfaces of the pebbles, but the microhole is substantially not formed on surfaces of the valleys. The leather-like sheet exhibits a sufficient surface abrasion resistance and an excellent non-slip properties because of its high sweat-absorbing ability under wet conditions.

REFERENCES:
patent: 5813932 (1998-09-01), Grafton
patent: 6024661 (2000-02-01), Guenther et al.
patent: 06264369 (1994-09-01), None
Derwent Publications, AN 1994-338802, XP-002285352, JP 06-264369, Sep. 20, 1994.
Patent Abstracts of Japan, JP 08-013351, Jan. 16, 1996.
Derwent Publications, AN 1991-040527, XP-002285353, JP 02-307726, Dec. 20, 1990.

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