Adjustable ground clamp

Electrical connectors – With circuit conductors and safety grounding provision

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Details

439433, 439803, H01R 466

Patent

active

050060740

ABSTRACT:
An adjustable clamping device provides a means for grounding a hollow metal box which can be of various dimensions. A C-shaped clamping device includes two separate, elongated members, and a threaded bolt and tab to secure the two members together. One of the members has a plurality of holes to receive the bolt and the tab, and the other member has a threaded hole formed therein to receive the bolt. The alignment of each of the plurality of holes with the threaded hole and tab of the other member establishes a plurality of different, discrete lengths for the base. The base has an end arm which carries a threaded grounding bolt movable into contact with the box. The grounding bolt has an abrading end surface which penetrates the outer surface of the box to form an intimate electrical contact with the base metal for grounding purposes.

REFERENCES:
patent: 2260136 (1941-10-01), Bergan
patent: 2420895 (1947-05-01), Merriman
patent: 2632068 (1953-03-01), Froebel et al.
patent: 3363219 (1968-01-01), Hubbard et al.
patent: 4476759 (1984-10-01), Aderneck
patent: 4538879 (1985-09-01), Wagener
patent: 4626051 (1986-12-01), Franks, Jr.
patent: 4776808 (1988-10-01), Davidson
patent: 4904193 (1990-02-01), Graves

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