Apparatus for resistance bonding electromagnetic coils

Details Apparatus for resistance bonding electromagnetic coils Apparatus for resistance bonding electromagnetic coils

1990-06-26

1992-02-25

Evans, Geoffrey S.

Electric heating

Metal heating

Wire, rod, or bar bonding

174 35R, 219 89, 219243, B23K 1110, B23K 1128, H05K 900

Patent

active

050916190

ABSTRACT:
An apparatus for passing an electrical current through an electromagnetic coil to perform a resistance bonding operation is disclosed. The apparatus includes a pair of pistons which are selectively moved to clamp the leads of the coil to respective electrical terminals. The terminals are selectively connected through a switch to a source of electrical power to perform the resistance bonding operation. A pivotable cover is provided for covering the entire apparatus during the resistance bonding operation. When the cover is closed by an operator, a logic controller automatically actuates the pistons to clamp the leads of the coil to the terminals. Additional limit switches sense when the pistons have been so moved and, in response thereto, automatically close the switch to connect the electrical power supply to the terminals, thereby commencing the resistance bonding operation. The cover may be lined with a shielding material to prevent the operator from being exposed to the electromagnetic field generated by the coil during the resistance bonding operation.

REFERENCES:
patent: 2632211 (1953-03-01), Trigg
patent: 2646535 (1953-07-01), Coggeshall et al.
patent: 2656290 (1953-10-01), Berberich et al.
patent: 3307012 (1967-02-01), Ryan et al.
patent: 3840722 (1974-10-01), Mayer et al.
patent: 4370512 (1983-01-01), Thomas

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