Electric heating – Metal heating – For bonding with pressure
Patent
1996-07-19
1998-03-31
Shaw, Clifford C.
Electric heating
Metal heating
For bonding with pressure
219160, 301 96, 301 99, B23K 1104
Patent
active
057341427
ABSTRACT:
A method of flash/butt welding an aluminum bicycle wheel rim, in which an aluminum sleeve having a dielectric anodized hardcoat surface finish is inserted into the center of the rim in order to support the interior walls of the rim during the welding process, is disclosed. The walls of a wheel rim or other similar metal profile defines an inner space in a tubular section of the rim. The sleeve is partially inserted into a first end of the rim and partially inserted into a second end of the rim. During the welding process, an electric current flows across a small space or gap between the two ends. The electric current melts the ends, at which time the two ends are pressed together in order to forge them into a single piece. The metal sleeve supports the inner walls of the profile in order to prevent collapse of the wall during welding. Due to the dielectric coating, the sleeve does not affect the welding circuit.
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Automation International Incorporated, Assurance Instruction Manual (24 pages).
Method for Manufacturing a Rim for a Cycle and Rim Obtained With This Method, P11889.SO1 (28 pages).
Shaw Clifford C.
Trek Bicycle Corporation
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