The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 18, 1989
Filed:
Dec. 17, 1987
Francis V Cunningham, Western Springs, IL (US);
Joslyn Corporation, Chicago, IL (US);
Abstract
A high voltage insulated bushing module of the gas operated fault closure type for connection with the probe of a mating insulated elbow module is disclosed. The module includes a snuffer tube adapted to perform as a piston within a piston cylinder cut from a length of drawn aluminum tubing. A connector unit mounted on and carried by the tube is provided to conduct load current in series abutting contact with and between the probe and the cylinder. Fault current arcing struck between an incoming probe contact and the tube mounted connector unit generates gas pressure to drive the tube toward the incoming probe, which in turn pulls the connector unit into connection with the probe contact to extinguish the arc. Alternatively, the connector unit is adapted for connection to an elongated, replaceable nut connected directly to the threaded stud of a mating bushing well, thereby rendering all load current conductive components of the bushing insert to be readily replaceable. The replaceable nut may be installed at a predetermined value of torque to assure that the threaded stud of the bushing well will not be broken during installation. The tube is configured for limiting the travel of the tube and for sealing the tube against gas leakage.