Plastic and nonmetallic article shaping or treating: processes – Pore forming in situ – Composite article making
Patent
1987-02-19
1989-02-07
Marlo, George J.
Plastic and nonmetallic article shaping or treating: processes
Pore forming in situ
Composite article making
264 466, 273167H, 273172, 273171, B29D 2700, A63B 5304
Patent
active
048030236
ABSTRACT:
In production of a wood-type golf club head having a FRP shell and a foam resin core, a seat hole is formed in the sole portion of the club head and closed by a support plate having a threaded through hole at the center of gravity thereof; foamable resin is infused into the FRP shell cavity in the form of fine beads or solution, a plug as a weight balance adjusting piece is screwed into the support plate in direct contact with the foam resin core for secure holding of the weight balance adjusting piece during use of the club.
REFERENCES:
patent: 3582081 (1971-06-01), Caplan
patent: 4043563 (1977-08-01), Churchward
patent: 4313607 (1982-02-01), Thompson
patent: 4451041 (1984-05-01), Hayashi et al.
patent: 4489945 (1984-12-01), Kobayashi
patent: 4553755 (1985-11-01), Yamada
Enomoto Koichi
Nakanishi Tatsuo
Marlo George J.
Yamaha Corporation
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