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:
Sep. 26, 1978
Filed:
Jun. 25, 1976
Joseph G Gorman, Murrysville, PA (US);
James F Roach, Oakmont, PA (US);
Paul O Wayland, Montour Falls, NY (US);
Westinghouse Electric Corp., Pittsburgh, PA (US);
Abstract
A vacuum type circuit interrupter is provided with contacts which include an integral axial magnetic field generating means. In one embodiment, a disc-like contacting portion is supported from the contact base, with a pair of half-turn conductive coil pieces extending between the base and the disc-like contacting portion. In another embodiment, the contacts have a cup-shaped base portion with a radially inwardly directed lip portion at the end of the cup-shaped portion to serve as the normal current carrying contact when the contacts are closed. The lip portions of these cup-shaped contacts are parted when the contacts are moved to the open position and the initial arc travels in a circular path around the annular lip. An auxiliary recessed disc-like contact portion is provided within the space defined by the cup-shaped base contact portion. The disc-like contact portion is supported from the base portion, and half-turn conductive coil pieces extend between the disc-like portion and the base portion of the contact so that an axial magnetic field may be generated when the contacts are in the open position.