Metal working – Means to assemble or disassemble – Means to assemble electrical device
Patent
1982-04-21
1984-07-03
Hall, Carl E.
Metal working
Means to assemble or disassemble
Means to assemble electrical device
29596, H02K 1506
Patent
active
044570678
ABSTRACT:
An apparatus reduces the insertion-required force in a coil inserting apparatus. A coil and an insulating material piece are automatically inserted into the groove of a stator core by the operation of a coil pusher. A current flows from a piezo-electric element accommodated within the coil pusher, when insertion resistance applied upon the coil pusher has increased, through the relay solenoid valve to drive a hydraulic cylinder thereby raising the coil wrapping jig. When the insertion pressure has suddenly increased, the current stops to keep fundamentally the coil wrapping jig synchronous to the motion of the coil pusher.
REFERENCES:
patent: 3791419 (1974-02-01), Arick et al.
patent: 3829953 (1974-08-01), Lauer et al.
patent: 4186478 (1980-02-01), Hamane et al.
patent: 4383360 (1983-05-01), Hamane et al.
European Search Report, European Patent Application No. 82 10 3292, search completed July 8, 1982.
Hamane Tokuhito
Tasai Masaaki
Hall Carl E.
Matsushita Electric - Industrial Co., Ltd.
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