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. 09, 1996
Filed:
Mar. 08, 1995
Steven C Rumsey, Greer, SC (US);
Westinghouse Air Brake Company, Wilmerding, PA (US);
Abstract
A harp for an electric trolley bus having a channeled shoe member for sliding engagement with a conducting wire. The channeled shoe member is mounted onto the uppemost member of a ball-and-socket swivel joint, and includes an improved shunt member extending through the lowermost member of the ball-and-socket swivel joint for carrying electric current from the swivel joint to a transmission cable provided to deliver electric current into the trolley bus. The shunt comprises a flexible length of conductive cable, with a graphite contact secured at a first end, and a copper contact secured at a second end, and includes a coil spring to maintain the two contacts biased against their respective adjacent conducting elements, and the graphite contact is adapted to be worn by the swiveling action of the swivel joint to mate with the micro-spherical topography of the adjacent contacting portion of the ball-and-socket swivel joint.