String having different modulus of elasticity for stringing a ra

Details String having different modulus of elasticity for stringing a ra String having different modulus of elasticity for stringing a ra

1993-12-07

1995-05-30

Ryan, Patrick J.

Stock material or miscellaneous articles

Coated or structually defined flake, particle, cell, strand,...

Rod, strand, filament or fiber

428373, 428394, 428395, 57243, 273 67R, 273 73A, 273 73R, 84297S, D02G 300

Patent

active

054199638

ABSTRACT:
The modulus of elasticity of a string portion or a string of uniform diameter for stringing a racket for ball games, in particular a tennis racket, differs in a section-wise manner. This may be by a stepwise change of the said modulus of elasticity along the length of the string or a stepless variation of the said modulus of elasticity along the length of the string.

REFERENCES:
patent: 2425831 (1947-08-01), Rozanek
patent: 3979110 (1976-09-01), Newton
patent: 4168603 (1979-09-01), Reich et al.
patent: 4339499 (1982-07-01), Tappe et al.
patent: 4382358 (1983-05-01), Tappe et al.
patent: 4415391 (1983-11-01), Reid
patent: 4436305 (1984-03-01), Fernandez
patent: 4568415 (1986-02-01), Woldtron
patent: 4835036 (1989-05-01), Woltron et al.
patent: 4974865 (1990-12-01), Umlauft et al.

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