Tennis racket

Details Tennis racket Tennis racket

A - Human Necessities

63

B

273/163

A63B 49/10 (2006.01) A63B 49/02 (2006.01)

Patent

CA 1299602

ABSTRACT OF THE DISCLOSURE In a tennis racket whose frame and handle shaft are integrally made of fiber reinforced plastics and the frame defines a strung surface, the frame is so designed that its first thickness "t" in a direction of the strung surface is substantially uniform around the circumference of the frame and its second thickness "T" in a direction perpendicular to the strung surface is gradually varied. The second thickness is maximum at side sections of the frame interposing a sweet spot in the strung surface and is minimum at the top and bottom portions of the frame in such a manner that the maximum thickness is thicker in the range from 35 % to 60 % than the minimum thickness, which increases a weight per unit length of the frame toward the side sections.

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