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. 11, 1984
Filed:
Jan. 04, 1982
Richard E Kinsinger, Scotia, NY (US);
General Electric Company, Schenectady, NY (US);
Abstract
A flow nozzle for a circuit interrupter includes a plurality of at least two throat regions which permit at least two transitions from subsonic to supersonic flow in the main nozzle flow channel. Very high speed photographs made of the operation of arc interruption devices of the type considered herein have shown that the greatest amount of arc cooling occurs in transition regions between subsonic and supersonic gas blast flow. Accordingly, the ability of arc interruption devices to quickly extinguish resulting arcs between electrodes in the main flow channel is significantly enhanced by the presence of a plurality of throat regions. These throat regions may be provided by shaped constructions or by bypass collars disposed in the downstream position of the main flow channel. The instant invention is applicable both to conventional single-flow and dual-flow interrupter nozzle designs.