Lock-out relay with adjustable trip coil

Details Lock-out relay with adjustable trip coil Lock-out relay with adjustable trip coil

1981-02-12

1983-08-16

Harris, George

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

Tripping means

335176, 335273, H01H 900

Patent

active

043994210

ABSTRACT:
A tripping solenoid is used in connection with a lockout relay and has an adjusting means for positioning a plunger end with respect to a coil of the solenoid to predetermine threshold voltage, reluctance, and response time to activation of the plunger by a magnetic field of the coil. A spring opposes movement of the plunger in a first direction toward a push rod which is separated from the plunger and mounted coaxially therewith.

REFERENCES:
patent: 1749602 (1930-03-01), Peterson
patent: 3091725 (1963-05-01), Huston
patent: 3249823 (1966-05-01), Beardow
patent: 3303445 (1967-02-01), Flentge
patent: 3505628 (1970-04-01), Allen
patent: 3649793 (1972-03-01), MacLean

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