Sport racket strings with hollow center core

Details Sport racket strings with hollow center core Sport racket strings with hollow center core

2005-08-02

2009-06-16

Hurley, Shaun R (Department: 3765)

Textiles: spinning, twisting, and twining

Strand structure

Covered or wrapped

Reexamination Certificate

active

07546724

ABSTRACT:
A string for sport rackets includes a center core having at least one first hollow portion extending in an axial direction of the center core and at least one layer wrapped around the center core. The at least one layer is composed of a plurality of first periderm wires which are spirally or alternatively wrapped on the center core.

REFERENCES:
patent: 3745061 (1973-07-01), Champaneria et al.
patent: 4297835 (1981-11-01), Shimizu
patent: 4344279 (1982-08-01), Ohara
patent: 4499144 (1985-02-01), van Rijswijk
patent: 5327714 (1994-07-01), Stevens et al.
patent: 6062014 (2000-05-01), Yeh
patent: 6327841 (2001-12-01), Bertini et al.

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