Electric heating – Metal heating – By arc
Reexamination Certificate
1999-02-24
2001-03-06
Heinrich, Samuel M. (Department: 1725)
Electric heating
Metal heating
By arc
C219S121350, C473S324000
Reexamination Certificate
active
06198066
ABSTRACT:
BACKGROUND OF THE INVENTION
Radiated beams such as electron or laser beams have been used to mark and decorate metal objects (U.S. Pat. No. 4,335,295). Beam energy and the heat generated alters the micro structure and light reflectance of the surface and causes contrasts in the appearance of the metal surfaces.
Golf club heads fabricated by casting have had graphic designs created dulling the casting process or thereafter by etching the club head surface (U.S. Pat. No. 5,800,285).
SUMMARY OF THE INVENTION
Broadly, the invention comprises a method and apparatus for treating the surface of a golf club part having a non-smooth surface such as a part which has been cast. Preferably, in those instances where the part is cast, the part is abraded for example by tumbling or by directing a light sandblast against the part to create a low reflectivity surface. Such abrading roughens the golf club part so that greater contrast can be obtained using radiated beam treatment. Surface roughening can also be created by acid etch or other suitable method.
The club part is mounted in a beam treatment station to permit projecting a radiated beam on selected areas of the part's surface resulting in the momentary and superficial melting or fusing of the surface which makes such areas less rough and more light reflective than adjacent surface areas. Patterns are formed by causing relative movement between the part and a high energy heat source such as a radiated beam. Preferably the heat source or beam is held fixed and the part mounted on a movable table. Table movement may be controlled by a programmable computer, or other suitable arrangement.
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Electron Beam Welding, p. 545, No Date Available.
Heinrich Samuel M.
Pennie & Edmonds LLP
Sturm Ruger & Company, Inc.
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