String for a racket

Details String for a racket String for a racket

1999-01-07

2000-05-16

Stryjewski, William

Textiles: spinning, twisting, and twining

Strand structure

Covered or wrapped

57234, 57258, D02G 336

Patent

active

060620145

ABSTRACT:
A string for a sports racket includes a core formed of a plurality of core filaments of nylon which are twisted together in a first direction and which are impregnated with a thermoplastic polyurethane resin, a moisture-cured polyurethane layer enclosing the core, a reinforcing layer formed of a plurality of reinforcing nylon filaments which are disposed side by side in annular rows and which are twisted about the polyurethane layer in a second direction opposite to the first direction, and a sheathing layer made of a mixture of silicone and nylon resin and covering the reinforcing layer.

REFERENCES:
patent: 4183200 (1980-01-01), Bajaj
patent: 4382358 (1983-05-01), Tappe et al.
patent: 4565061 (1986-01-01), Durbin
patent: 4660364 (1987-04-01), Chiang
patent: 4860531 (1989-08-01), Wells et al.
patent: 5090188 (1992-02-01), Lin et al.

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