Operating handle locking device for circuit interrupter

Details Operating handle locking device for circuit interrupter Operating handle locking device for circuit interrupter

1986-05-20

1988-03-22

Recla, Henry J.

Electricity: circuit makers and breakers

Switch activation inhibitor

Actuator locking device

200 4319, 200318, H01H 928

Patent

active

047330295

ABSTRACT:
An operating handle locking device for use with an electrical switchgear such as a circuit interrupter comprises a locking plate for blocking the movement of the operating handle between the ON position and the OFF position, and a support plate secured to the circuit interrupter for supporting the lock plate, the locking plate being locked in the operating handle locking position relative to the support plate by a locking member. The switchgear may have a trip button for tripping the switchgear from the exterior, and the locking plate may have a cover portion for covering the trip button when the locking plate is in an operating handle locking position. A cover portion may also be provided in the locking plate for covering the reset button of the circuit interrupter when in the operating handle locking position.

REFERENCES:
patent: 1383781 (1921-07-01), Ball
patent: 1983902 (1934-12-01), Hanny
patent: 2832857 (1958-04-01), Landmeier
patent: 2946864 (1960-07-01), Marien
patent: 2978613 (1961-04-01), Hein
patent: 3327075 (1967-06-01), Phillipson
patent: 3670228 (1972-07-01), Adamson
patent: 4160137 (1979-07-01), Clement et al.
patent: 4260861 (1981-04-01), DiMarco

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