Push-on type grounding bushing
AssigneeBridgeport Fittings, Inc.
InventorLawrence J. SMITH
Life of this patent
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Abstract
A push-type grounding bushing has an electrically conductive body having a first end, a second end, a bore formed therethrough, and an intermediate shoulder stop to contact an end of a conduit. The bushing has with a locking device gripping tabs forming a helix so that the conduit can be pushed and held in the locking device and removed by rotating the conduit relative to the body. A throat insulator is placed into the second end of the body and has a flange to cover the second end. An electrically conducting lug is secured to the body and has a recess or bore for receipt of at least one electrical conductor to ground the bushing while a fastener mechanically and electrically secures the conductor to the lug.
Claims15
A push-type grounding bushing comprising:
- an electrically conductive body having a first end and a second end, with a bore formed therethrough, the body further having an intermediate shoulder stop formed therein dimensioned to contact an end of a conduit passing into the body from said first end;
- a locking device placed in the first end of the body having a plurality of gripping tabs forming a helix so that the conduit can be pushed into said locking device and held by said plurality of gripping tabs and removed by rotating the conduit relative to the body,
- a throat insulator dimensioned for placement into the second end of the body, the throat having a flange dimensioned to substantially cover said second end, the throat insulator having a bore formed therein for passage of electrical conductors extending out of said conduit;
- an electrically conducting lug secured to said body, the lug having a recess or bore dimensioned for receipt of at least one electrical conductor for providing grounding of said bushing;
- and
- a fastener configured to mechanically and electrically securing said conductor received in said recess to said lug.
A lay-in type lug for attachment to a push-type grounding bushing having a boss dimensioned for receipt of said lug, the lug having a base, first, second, third and fourth sides and a top, the lug having a lay-in recess formed between the second and fourth sides and having an opening extending through the third side, the lay-in recess dimensioned for lay-in placement of an electrical conductor through the opening in the third side and positioned so as to extend across the second and fourth sides, a bore formed through the first side and extending into said recess so as to allow an electrical conductor to pass therethrough and a threaded bore formed through the top and extending into said lay-in recess, said bore for receipt of a fastener configured to mechanically and electrically secure the at least one conductor to said lug.
Dependencies are inferred from the claim text.