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:
Feb. 14, 1984
Filed:
Jun. 09, 1982
Lutz Niemeyer, Birr, CH;
Klaus Ragaller, Wettingen, CH;
BBC Brown, Boveri & Company, Limited, Baden, CH;
Abstract
A compression piston switch is provided with two switching parts which are mutually axially displaceable. The switch also has a device which is connected to a first one of the two switching parts for guiding a quenching gas flow. The quenching gas, which is used for quenching a switching arc, flows through first and second constrictions in the device from a compression into an expansion space. The first constriction of the device is provided by an annular part of a conductive material. In this switch, the dielectric strengthening of the quenching zone is increased by preventing, to a large extent, the pushing together of the electric field between the device and the first switching part. Such a switch is particularly distinguished by reliable switching of high voltages in the case of a short circuit.