Automatic high voltage grounding device for personnel safety

Details Automatic high voltage grounding device for personnel safety Automatic high voltage grounding device for personnel safety

1975-05-08

1977-01-11

Tolin, Gerald P.

Electricity: circuit makers and breakers

Special application

Actuated concurrently with operation or use of art device

200 6181, 174 51, 200244, H01H 316

Patent

active

040028690

ABSTRACT:
The grounding device shorts high voltages within a cabinet to cabinet ground when a cabinet access door is opened. The device includes a base plate secured to the top of the cabinet adjacent the latch side of the access door. A high voltage terminal board having a plurality of high voltage terminals extending therethrough is secured to the base plate. A grounding plate is pivotably secured to the base plate. A plurality of spring finger contacts are secured to the grounding plate with each of the contacts being in a mating relationship with a different one of the plurality of terminals. An actuating lever has one end secured to the grounding plate and the other end engaging the inner surface of the access door to control the movement of the grounding plate to ground the terminals when the access door is opened and to remove ground from the terminals when the access door is closed. A counter weight is secured to the grounding plate to provide a positive movement for the grounding plate and a positive grounding contact between the terminals and the spring finger contacts when the access door is opened.

REFERENCES:
patent: 3135821 (1964-06-01), Lanham
patent: 3467938 (1969-09-01), Jahr
patent: 3576409 (1971-04-01), Fiddler
patent: 3655926 (1972-04-01), Meermans
patent: 3858019 (1974-12-01), Muri
patent: 3912895 (1975-10-01), Plana

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