Grounding bushing installable to raceway before or after wires are in the raceway
AssigneeArlington Industries, Inc.
InventorThomas J. Gretz
Life of this patent
Estimating the term…
Abstract
A grounding bushing with a central opening for electrically grounding a conduit, electrical metal tubing (EMT), or a pipe. The grounding bushing includes a stationary bushing portion and a rotatable bushing portion having slotted ends held together by mounting fasteners. The slotted ends permit rotation of the rotatable bushing portion away from the stationary bushing portion. After attachment to a conduit or similar structure, one or more mounting fasteners can be loosened to allow installation of additional wires through the central opening and into the conduit, EMT, or pipe. An electrically insulated liner extending around the entire inner periphery of the bushing prevents chafing or abrasion of any electrical wires by the end of the conduit.
Claims16
A grounding bushing comprising:
- a substantially ring-shaped body including a stationary bushing portion and a rotatable bushing portion each having two ends, said ring-shaped body including a ring opening;
- said stationary bushing portion including threaded bores on each end;
- said rotatable bushing portion including a bottom edge, a first slot on said first end and a second slot on said second end, said slots having a slot opening;
- a mounting fastener extending through each of said slots on said ends of said rotatable bushing portion and threaded into said threaded bores of said stationary bushing portion;
- and
- said first end of said rotatable bushing portion is thicker than said second end of said rotatable bushing portion.
Dependencies are inferred from the claim text.