Electricity: electrical systems and devices – Control circuits for electromagnetic devices – For relays or solenoids
Patent
1984-09-28
1987-01-27
Gellner, Michael L.
Electricity: electrical systems and devices
Control circuits for electromagnetic devices
For relays or solenoids
361181, H01H 4712
Patent
active
046398244
ABSTRACT:
A wire detector for semi-automatic wire stripper which responds to capacitance changes caused by sensing a capacitive object such as an exposed wire end and includes signal processing through an oscillator and amplifier circuit providing timer control for activating a relay driver circuit for an adjustable duration time period. The wire touch sensor circuit relay driver is then coupled through a mercury wetted relay which provides electrical isolation from external (switched) voltages to an air solenoid which, when actuated, allows the pneumatic mechanism of the wire stripper to cycle through its function of wire stripping.
REFERENCES:
patent: 2292846 (1942-08-01), Pritchard
patent: 3575640 (1971-04-01), Ishikawa
patent: 3725808 (1973-04-01), Oushige et al.
patent: 4246533 (1981-01-01), Chiang
Furlong James J.
Howe Dwayne E.
Donahue B. A.
Gardner Conrad O.
Gellner Michael L.
Ruthledge D.
The Boeing Company
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