Racquet strings

Details Racquet strings Racquet strings

1987-12-16

1989-08-29

Watkins, Donald

Textiles: spinning, twisting, and twining

Strand structure

Covered or wrapped

57 7, 57232, 57248, 57251, D02G 334, D02G 344, D02J 100

Patent

active

048605310

ABSTRACT:
A synthetic string for a sports racquet has an inner single strand or multifilament core, wrapped with one or more helically wound layers of large diameter strands of monofilament, and surrounded by an extruded coating of regular polygonal cross-section having 5 to 8 planar surfaces joined at parallel, axially extending biting edges which serve to impart greater topspin and slice control to the ball.

REFERENCES:
patent: 1773969 (1930-08-01), Dreyfus
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patent: 3023483 (1962-03-01), Steiner
patent: 3738096 (1973-06-01), Crandall
patent: 3745756 (1973-07-01), Crandall
patent: 4055941 (1977-11-01), Rivers, Jr. et al.
patent: 4084399 (1978-04-01), Kanemura et al.
patent: 4183200 (1980-01-01), Bajaj
patent: 4275117 (1981-06-01), Crandall
patent: 4297835 (1981-11-01), Shimizu
patent: 4306410 (1981-12-01), Nakamura et al.
patent: 4320791 (1982-03-01), Fujii et al.
patent: 4395458 (1983-07-01), Huang
patent: 4660364 (1987-04-01), Chiang
Vol. II, No. 3, "The Stringer's Assistant", Mar. 1987, U.S. Stringer'Assoc., Del Mar, Calif.
Leoina.TM. Square Shaped String Advertisement, p. 34, Oct. 1988, "Tennis Buyer's Guide".

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