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:
Mar. 31, 1981
Filed:
Jan. 11, 1978
Robert K Smith, Lansdale, PA (US);
Gerald A Votta, King of Prussia, PA (US);
Electric Power Research Institute, Palo Alto, CA (US);
Abstract
An arc runner structure is described for an arc spinner type of interrupter wherein the arc runner is in series with an electrical coil which is closely coupled to the arc runner. The coil current and a circulating current induced in the arc runner produce a magnetic field in an arcing space where the magnetic field interacts with the arc current to produce a Lorentz force which rotates the arc around the arc runner and relative to a cool static dielectric gas, in order to extinguish the arc. A high Lorentz force is desired since this produces a higher arc spinning speed and thus improved interruption operation. The magnetic field strength produced, and its relative phase shift with respect to the arc current, is controlled by the inductance of the arc runner, its mutual coupling to the coil and the resistance of the arc runner. These parameters determine the induced current in the arc runner for a given configuration. The arc runner thickness is intentionally made less than that which would give the maximum induced current at arc current zero, thereby to obtain the maximum rotating force on the arc in the interval near the arc current zero.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile