Process for forming string

Details Process for forming string Process for forming string

1977-05-31

1979-09-25

Watkins, Donald

Textiles: spinning, twisting, and twining

Apparatus and processes

With stretching

57236, 57282, D02G 338, D02G 344

Patent

active

041686063

ABSTRACT:
The invention of this application relates to strings for game rackets which are formed of large monofilaments of thermoplastic, fiber-forming resin in which the monofilaments are twisted to form a bundle and two or more bundles are cabled and twisted in the opposite direction from the twist of the bundle, the composite string being oriented and heat set to prevent unravelling of the string. The strings are laced into a game racket such as a tennis racket under a tension of about 50 pounds to form a racket which has good playing properties as well as tensile retention and good resilience retention.

REFERENCES:
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patent: 2401291 (1946-05-01), Smith
patent: 2735258 (1956-02-01), Crandall
patent: 2861417 (1958-11-01), Crandall
patent: 3018610 (1962-01-01), Kleinekathofer
patent: 3024589 (1962-03-01), Vaughan
patent: 3050431 (1962-08-01), Crandall
patent: 3309861 (1967-03-01), Pierson et al.
patent: 3481136 (1969-12-01), Timmons et al.
patent: 3488934 (1970-01-01), MacDonald
patent: 3559390 (1971-02-01), Staschewski
patent: 3738096 (1973-06-01), Crandall
patent: 4016714 (1977-04-01), Crandall et al.
patent: 4055941 (1977-11-01), Rivers et al.

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