Moulded fiber reinforced resin racket with tubular core

Details Moulded fiber reinforced resin racket with tubular core Moulded fiber reinforced resin racket with tubular core

Category

A - Human Necessities

Subcategory

63

Subsubcategory

B

CPC

273/163, 26/204

IPC codes

A63B 49/10 (2006.01) A63B 49/00 (2006.01) A63B 49/02 (2006.01)

Type

Patent

Patent number

CA 1064070

Description

Abstract of the Disclosure A tennis racket frame is constructed primarily of an elongated hollow tube member having a wall thereof consisting essentially of a plurality of concentric layers of high tensile strength fibers impregnated and bonded together by binder resin, at least two of the layers being helical windings of opposite unidirectional hands, and the head portion of a racket frame having a groove molded therein to receive the loop portions of the strings in recessed relation to the surrounding surface areas of the frame. The frames are made by a method including the use of a special mandrel on which the layers of fiber are wound under controlled conditions providing extra material in the head portion which is formed into the wall of the grooved portion of the head without affecting the overall sectional dimensions of the frame.

Application Number

218734

Affiliated with

Also associated with

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