Electrical connectors – With circuit conductors and safety grounding provision – Grounding to pipe – rod or conduit
Patent
1982-09-13
1989-02-21
Desmond, Eugene F.
Electrical connectors
With circuit conductors and safety grounding provision
Grounding to pipe, rod or conduit
439814, H01R 466
Patent
active
048061085
ABSTRACT:
A grounding bushing and ground conductor attaching lug assembly comprises an annular bushing with a plurality of ears or bosses rasied from the outer surface of the bushing, and each of the ears or lugs has a planar top surface that defines a plane inclined with respect to the central axis of the bushing. Thus when the bushing is tightened in place on a conduit in an electrical panel or box, the outer surface of at least one of these ears or bosses is accessible from the opening of the panel. The grounding lug is adapted to mate with the surface of each boss or ear. Each of the bosses has a tapped opening so that the grounding lug can easily be connected with a screw to its respective boss. The grounding lug has a conductor receiving slot which is readily accessible from the exterior of the box. The grounding conductor is easily inserted and held securely in place. Because each of the bosses on the exterior of the grounding bushing is drilled and tapped to receive a screw for supporting the lug, and the axis of the tapped thread is perpendicular to the inclined surface of the boss, a grounding lug can be easily attached no matter where the busing tightens down on a conduit because there will alsways be at least one boss that is accessible for attachment of the grounding lug.
REFERENCES:
patent: 2710381 (1955-06-01), Monson
patent: 2974185 (1961-03-01), Curtiss
patent: 3006981 (1961-10-01), Weber
patent: 3365693 (1968-01-01), Browne
patent: 3492625 (1970-01-01), Bromberg
patent: 3967872 (1976-07-01), Mooney et al.
patent: 4159859 (1979-07-01), Shemtov
patent: 4189198 (1980-02-01), Reichman
patent: 4210374 (1980-07-01), Churla
Advertisement "Lay.varies.In-Lug" from O-Z/Gedney, Terryville, Conn., 08786.
Advertisement "Beavertooth" from Atlas Technologies Inc., Scranton, Pa., 18509.
Advertisement "Efcor" from Gould Inc., Electrical Components Division, E. Farmingdale, N.Y., 11735.
Advertisement "Midwest Lazy-Lug" from Midwest Electric Mfg. Co., Chicago, Ill., 60612.
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