Golf club and method of manufacture

Amusement devices: games – Puzzles – Take-aparts and put-togethers

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273167H, 273DIG8, 264 454, 264 466, A63B 5304, B29D 900

Patent

active

052442110

ABSTRACT:
A golf club comprising an elongated shaft with a lower end for attachment of the club head. The club head comprises a hosel portion for connection of the head to the shaft end, and a main body portion which comprises an enclosed outer wall and a hollow interior chamber. The club further involves the presence of molded material which fills the hollow chamber of the head, this molded material comprising a flexible synthetic plastic foam which bonds to the inner wall surfaces. The manufacturing method involves the filling of the chamber with the foam whereby the foam forms within the chamber. This method may involve the mixing of an aromatic isocyanate with a polyether polyol prior to introduction of the mixture into the chamber. The mixture, which forms a flexible polyurethane foam with the desired bonding characteristics, may be introduced through an axial bore defined by the hosel which opens into the interior of the chamber. The method is preferably applied to the manufacture of metal club heads.

REFERENCES:
patent: 4123061 (1978-10-01), Dusbiber
patent: 4438931 (1984-03-01), Motomiya
patent: 4516778 (1985-05-01), Cleveland
patent: 4553755 (1985-11-01), Yamada
patent: 4714577 (1987-12-01), Nagamoto et al.
patent: 4783853 (1988-11-01), Zuber
patent: 4803023 (1989-02-01), Enomoto et al.
patent: 4824116 (1989-04-01), Nagamoto et al.
patent: 5093379 (1992-03-01), Tiao et al.

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