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US 2002/0160866 A1Published application
Racket
AssigneeBridgestone Sports Co., Ltd.
InventorsToyotake Matsuoka, Satoshi Shirai
Life of this patent
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Abstract
A racket comprising a frame body having a face portion, a shaft portion, and a grip portion, and a groove in the length of 10% to 20% against the entire circumference of the frame comprising the face portion provided at two portions covering maximum width points of the frame comprising the face portion and a closed tube enclosing a slidable weight weighing 2 g to 10 g is embedded in the groove.
Claims20
A racket comprising a frame body having a face portion, a shaft portion, and a grip portion,
- wherein a groove in the length of 10% to 20% against entire circumference of a frame comprising the face portion is provided at two portions covering maximum width points of the frame comprising the face portion,
- a closed tube enclosing a slidable weight weighing 2 g to 10 g is fixedly embedded in the groove.
Dependencies are inferred from the claim text.