Ball-game racket, in particular a tennis racket
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United States of America Patent
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-
Jul 14, 1998
Issued Date -
N/A
app pub date -
Mar 19, 1997
filing date -
Apr 3, 1996
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A ball-game racket, in particular a tennis racket, having a racket head consisting of a tension frame and netting and having a shaft (6) with handle extending away from the racket head, has at least one spring-mass system which is provided on one side of a midplane enclosing the longitudinal axis of the shaft and arranged perpendicular to the plane of the netting and has, in a movement channel extending from the handle into the racket head, at least one mass weight which is movable in the longitudinal direction of the channel against the action of a spring element between a starting position in the handle and an end position in the racket head.
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