US 5,214,249 AGranted

Electrical assembly with end collars for coupling ends of a weathershed housing to the end fittings

AssigneeHubbell Incorporated

InventorsWaymon P. Goch, John D. Sakich

Life of this patent

Estimating the term…

Loading patent…

Abstract

An electrical assembly, such as an insulator or a surge arrester, utilizing a pair of end collars for coupling an elastomeric weathershed housing to a pair of metallic end fittings, and for reducing electrical stress at the interface of the ends of the weathershed housing and the end fittings, and for sealing the ends of the weathershed housing to the end fittings. In particular, a radially directed force is applied to the weathershed housing by insertion of the core member into the axial bore of the weathershed housing causing radial outward expansion of the weathershed housing into intimate contact with the end collars. Also, each of the ends of the weathershed housing is held in contact against the inner end of the respective end fitting to seal the interface therebetween. Accordingly, a watertight seal is created at the interface between each of the end fittings and the ends of the weathershed housings. The end collars are electrically and mechanically coupled to the end fittings via either a press fit or a set screw for reducing electrical stresses at the interface of the ends of the weathershed housing and the end fittings. The core member can be an insulating rod or a plurality of electrical components, such as metal oxide varistors.

Claims22

Dependent claims

An electrical assembly, the combination comprising:

a core member having a first end, a second end and an outer surface with a predetermined outer cross-sectional width;
a weathershed housing formed of an elastomeric material, and having a first end, a second end and an axially extending bore with a predetermined inner cross-sectional width for receiving said core member therein, each of said first and second ends of said weathershed housing having a portion with a predetermined outer cross-sectional width;
a first end fitting fixedly coupled to said first end of said core member;
and
first means for coupling and sealing said first end of said weathershed housing to said first end fitting, said first means for coupling and sealing including
a first collar having an axially extending bore with a predetermined inner cross-sectional width for receiving said portion of said first end of said weathershed housing,
said inner cross-sectional width of said bore of said first collar, said outer cross-sectional width of said core member, said inner cross-sectional width of said bore of said weathershed housing and said outer cross-sectional width of said portion of said first end of said weathershed housing all being sized for radially compressing said weathershed housing into intimate contact with said first collar upon inserting said core member into said bore of said weathershed housing to cause outward radial pressure of said portion of said first end of said weathershed housing against said bore of said first collar.

4 more elements

Dependencies are inferred from the claim text.