String tensioning system for ball racket

Details String tensioning system for ball racket String tensioning system for ball racket

1992-08-18

1994-03-15

Stoll, William

Amusement devices: games

Aerial projectile game; game element or accessory therefor...

Target

273 73E, A63B 5112

Patent

active

052941167

ABSTRACT:
A string tensioning system is provided for ball rackets, in particular for tennis rackets and squash rackets. The string tensioning system, formed by a string tensioning member (1), is insertable between the substantially parallel disposed strings (2 to 7) of a ball racket (19) such that these substantially parallel disposed strings are lifted up and down, respectively, relative to their original common plane and relative to each neighboring string of a parallel direction. Thereby the strings are retensioned and the original stringing hardness is recovered.

REFERENCES:
patent: 1790156 (1931-01-01), Kleinman
patent: 3994496 (1976-11-01), Barchett
patent: 4168065 (1979-09-01), Goransson
patent: 4180265 (1979-12-01), Staufer
patent: 4512576 (1985-04-01), Dahlgren
patent: 4662632 (1987-05-01), Bjorhn
patent: 4721304 (1988-01-01), Zavilenski
patent: 4752071 (1988-06-01), Tobach
patent: 4863163 (1989-09-01), Anderka et al.
patent: 5149090 (1992-09-01), Chen et al.

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