Method of producing a racket frame
OwnerChin-San Youinventor
Life of this patent
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Abstract
A racket frame is made by molding a thermosetting resin composition together with reinforcing fibers. Molds are made of flexible strip members, such as plastics, wood pulp, paper pulp, wood, bamboo, etc., which are bent to form a racket frame in a fitting, thereby reducing the production cost incurred in fabrication of expensive molds. The formed racket frame has no shell and core structure.
Claims8
A method for making a racket frame comprising the steps of preparing two elongated strip members each including two racket handle portions and a racket head portion intermediate said racket handle portions and defining an elongated mold cavity section extending throughout its length, placing a thermosetting resin composition and fibres for reinforcing into the mold cavity sections, bringing said two strip members together in face-to-face relation with the mold cavity sections thereof in opposing relation to each other to form a structural member defining an elongated mold cavity containing said thermosetting resin composition and fibres, bending said strip members to form a shape of a racket frame, curing said thermosetting resin composition, and removing the strip members which comprise said structural member after curing.
Dependencies are inferred from the claim text.