Bushing well stud construction
AssigneeAmerace Corporation
InventorsLarry N. Siebens, Alan D. Borgstrom
Life of this patent
Estimating the term…
Abstract
A bushing insert of a high voltage electrical distribution system is mechanically coupled and electrically connected to a bushing well by means of a threaded coupling member, a portion of which coupling member is threaded to the electrical contact element of the bushing well, the coupling member having a wrenching configuration enabling that portion of the coupling member to be removed from the electrical contact element of the bushing well should the portion inadvertently become severed from the remainder of the coupling member.
Claims7
A bushing well for use in connection with a bushing insert in a high voltage electrical distribution system, the bushing insert having an insert end portion including a first electrical contact element of conductive material, the first electrical contact element including an aperture therein and an internal thread in the aperture, said bushing well comprising:
- a bushing well member of dielectric material;
- a receptacle in the bushing well member, the receptacle extending between an opening, for receiving the insert end portion of the bushing insert, and a remote closed bottom spaced from the opening;
- a second electrical contact element of conductive material integral with the bushing well member at the closed bottom of the receptacle, the second electrical contact element having a threaded fastening means therein including a hole in the second electrical contact element and an internal thread in the hole;
- a coupling member of conductive material, the coupling member having a first portion and a second portion, threaded means for affixing the first portion of the coupling member to the first electrical contact element, said threaded means including a generally cylindrical pin having an external thread complementary to the internal thread in the aperture of the first electrical contact element, and complementary threaded fastening means for engaging the threaded fastening means of the second electrical contact element to mechanically couple the bushing insert with the bushing well and electrically connect the first and second electrical contact elements, the complementary threaded fastening means including a generally cylindrical shank having an external thread complementary to the internal thread in the hole of the second electrical contact;
- locking means establishing a locking force between the coupling member and the second electrical contact element for tending to lock the coupling member against rotation relative to the second electrical contact element upon engagement of the external thread of the shank with the internal thread of the hole and seating of the second portion of the coupling means within the second electrical contact element;
- and
- wrenching means integral with the second portion of the coupling means for enabling wrenching of the second portion against the locking force to allow selective removal of the second portion from the complementary threaded fastening means independent of the presence of the first portion of the coupling means.
Dependencies are inferred from the claim text.