Amusement devices: games – Puzzles – Take-aparts and put-togethers
Patent
1987-01-30
1988-07-05
Marlo, George J.
Amusement devices: games
Puzzles
Take-aparts and put-togethers
273164, A63B 5304
Patent
active
047549742
ABSTRACT:
A head of a golf club comprises a head body having a face portion, for hitting a golf ball, and a back portion. A surface structure for producing a turbulent boundary layer in the air on the outer surface of the head body is provided on the outer surface substantially throughout a region from the periphery of the face portion of the head body to the back portion of the head body. The surface structure may include a plurality of fine grooves or a plurality of fine fibers erected on the outer surface of the head body.
REFERENCES:
patent: D192515 (1962-04-01), Henrich
patent: 3273891 (1966-09-01), Grim
patent: 3458194 (1969-07-01), Coles
patent: 4065133 (1977-12-01), Gordos
Marlo George J.
Maruman Golf Co. Ltd.
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