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US 5,470,062 AGranted
Tennis racket
AssigneeYamaha Corporation
InventorMasanori Takatsuka
Life of this patent
Estimating the term…
Abstract
In construction of a tennis racket having a frame top and a yoke, balance adjusters having specific gravities larger than that of a frame are arranged at the frame top and the yoke, respectively, with a specified mass ratio between the two balance adjusters. Repulsion characteristics are much improved and vibratory impact is mitigated even at off-spot shooting whilst assuring long and speedy fly of balls with reduced physical damages on players.
Claims9
A tennis racket comprising
- a substantially oval frame including a frame top and a yoke,
- a first balance adjuster arranged at said frame top and made of a first material having a first specific gravity larger than that of said frame, and
- a second balance adjuster arranged at said yoke and made of a second material having a second specific gravity larger than that of said frame,
- the mass of said second balance adjuster being 1.5 to 2.9 times larger than that of said first balance adjuster.
1 more element
Dependencies are inferred from the claim text.