Keyhole grounding clamp

Details Keyhole grounding clamp Keyhole grounding clamp

1977-09-07

1979-05-08

McGlynn, Joseph H.

Geometrical instruments

339 14L, 339272R, H01R 708, H01R 306

Patent

active

041533224

ABSTRACT:
A lightweight, grounding clamp assembly utilizes a grounding stud for rigid mounting on an electrical device and incorporates nondeformable, stud-engaging bight which renders the assembly capable of safely conducting extremely high fault currents in the order of 100,000 amps or more. The bight forms a part of an open-ended passage extending through the clamp body which passage is completely encircled by the body to resist distortion of the bight under the influence of high fault currents. In preferred embodiments, the passage has a keyhole-shaped cross-section and the stud is configured to be complementally received and retained within the neck of the keyhole.

REFERENCES:
patent: 1679677 (1928-08-01), Milne
patent: 1728868 (1929-09-01), Pierce
patent: 1821486 (1931-09-01), Taylor
patent: 2397390 (1946-03-01), Wadsworth
patent: 2841774 (1958-07-01), Romanek

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