Electric heating – Metal heating – For bonding with pressure
Patent
1974-06-03
1976-01-13
Truhe, J. V.
Electric heating
Metal heating
For bonding with pressure
219113, B23K 920
Patent
active
039327248
ABSTRACT:
A capacitance discharge stud welding apparatus which comprises a housing. A coil is positioned in the housing and an armature is located within the coil and is movable between first and second positions relative to the coil. A stud chuck is provided for the purpose of holding a stud and is connected to the armature for movement therewith. A relatively light spring constantly urges the armature and the stud chuck toward the first position of the armature in the direction of a metal member to which a stud held by the chuck is to be welded. Engagement of the stud held by the chuck with a metal member causes the armature to move to the second position relative to the coil and against the urging of the light spring. An electrical welding current circuit is provided and electrical connection means connect the welding current circuit to the chuck and to a stud held thereby. Additionally, an electrical coil circuit is provided which is electrically connected to the coil for energizing the coil to move the armature to the aforementioned first position.
REFERENCES:
patent: 3414701 (1968-12-01), Guettel
patent: 3456090 (1969-07-01), Wenrich et al.
patent: 3519787 (1970-07-01), Kroy
patent: 3532851 (1970-10-01), Glorioso
Herkamp N. D.
Tru-Fit Products Corporation
Truhe J. V.
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