Grounding jack

Details Grounding jack Grounding jack

1974-01-24

1977-07-12

Lake, Roy

Geometrical instruments

339 88R, 339130R, 339219R, 339259R, H01R 306, H01R 1332

Patent

active

040350452

ABSTRACT:
A grounding jack, particularly useful in a patient load center of hospitals, and the like, is disclosed, wherein the male and female members thereof, when assembled, may be locked together by the non-current-carrying or insulated portions thereof, and the frictional engagement between the surfaces of the current-carrying portions is such that breakage of the locking means or inadvertent unlocking between the two members will not impair current flow.

REFERENCES:
patent: 1101939 (1914-06-01), Knauff
patent: 2304038 (1942-12-01), Thompson
patent: 2502302 (1950-03-01), Arson
patent: 2704357 (1955-03-01), Johnson
patent: 3170748 (1965-02-01), Van Horssen
patent: 3184703 (1965-05-01), Piscitello et al.
patent: 3295076 (1966-12-01), Kraus

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