Electric heating – Metal heating – For bonding with pressure
Patent
1994-01-27
1995-10-24
Shaw, Clifford C.
Electric heating
Metal heating
For bonding with pressure
219 98, 411171, B23K 920
Patent
active
054612098
ABSTRACT:
A stud which is automatically fed so as to welded stably and properly, has a large electric contact surface with the collet, facilitates clip attachment, and maintains the engagement firmly after the attachment of the clip. A stud 1 extends upwardly into a rod-like form which is threaded on its periphery, and includes a welding tip at the lower end thereof for welding to a base member such as a panel so as to be used in mounting a member to be attached on the base member. The stud 1 is formed to be short in overall length and its welding tip is formed as a flange 4 whose diameter is larger than that of the rod-like body. A crest 6 of the screw 3 is formed flat. An upper flank angle 8 of the screw is formed large while a lower flank angle 10 of it is formed small. An edge 12 of an upper end 11 of the stud is chamfered.
REFERENCES:
patent: 1872166 (1932-08-01), Muhlig
patent: 3182172 (1965-05-01), Dash
patent: 3352996 (1967-11-01), Neumeier
patent: 3694611 (1972-09-01), Ettinger
patent: 3918345 (1975-11-01), Phipard, Jr.
patent: 5190424 (1993-03-01), Kazino et al.
Endo Hiroshi
Imahara Masaharu
Kawaguchi Hitoshi
Kojyo Yuji
Kondo Yoshiteru
Emhart Inc.
Murphy E. D.
Shaw Clifford C.
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