Games using tangible projectile – Golf – Club or club support
Patent
1997-06-23
2000-05-09
Chapman, Jeanette
Games using tangible projectile
Golf
Club or club support
473349, A63B 5304
Patent
active
060596708
ABSTRACT:
The striking surface of a club head is provided with a multilayer coating. A first layer is a tungsten cobalt carbide matrix material which is applied to the substrate by thermal spraying. The particles of the tungsten cobalt carbide matrix material clump on the roughened surface, adhere to the surface by a mechanical bond, and provide a striking surface having a hardness of approximately 46 to 48 on the Rockwell C scale. Preferably, the club head is then heat treated in a vacuum at approximately 1850.degree.F. for approximately five to ten minutes, causing the tungsten cobalt carbide matrix to fuse to the substrate in a metallurgical bond. The metallurgical bond provides a striking surface having a hardness of approximately 54 to 58. The striking surface is next treated to roughen the surface and to remove contaminants and impurities. A ceramic-metal matrix of hard composites is then thermal spray coated over the first layer, providing a striking surface with a hardness of approximately 60 to 63. Finally, any overspray on the club head is removed by sanding. The multilayer coating provides a very hard striking surface, has good adhesion to the substrate, and will not fracture after repeated impact between the club head and the golf ball. Other embodiments are also provided.
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Blau Stephen L.
Chapman Jeanette
Gallagher Thomas A.
Gordon David P.
Jacobson David S.
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