Method of moulding racquets with stringing holes

Details Method of moulding racquets with stringing holes Method of moulding racquets with stringing holes

1989-03-06

1991-01-01

Silbaugh, Jan H.

Plastic and nonmetallic article shaping or treating: processes

Direct application of fluid pressure differential to...

Producing multilayer work or article

264103, 264219, 264247, 264257, 264313, 264334, 264516, 249142, 273 73C, B29C 3376, B29C 4514

Patent

active

049816390

ABSTRACT:
A method of moulding racquets to define stringing holes in the moulded frame. The method includes forming at least one approximately ladder-shaped member having two side pieces interconnected by rung pieces, with the side pieces substantially conforming to the curved shape of at least part of the frame of the racquet; entrapping the ladder-shaped member between two mould plates defining a mould cavity; injecting a plastic material into the mould cavity to mould the frame around the rung pieces; and forming the ladder-shaped member in two parts and separating the two parts after the frame has been moulded to remove the ladder-shaped member from the moulded frame.

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patent: 4482798 (1988-06-01), Mott
patent: 4724115 (1988-02-01), Freeman

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