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. 24, 2009
Filed:
Feb. 22, 2007
Olaf Hunger, Schaffhausen, CH;
Max Claessens, Gebenstorf, CH;
Martin Holstein, Baden-Rütihof, CH;
Johan Abrahamsson, Wettingen, CH;
Martin Kriegel, Unterehrendingen, CH;
Olaf Hunger, Schaffhausen, CH;
Max Claessens, Gebenstorf, CH;
Martin Holstein, Baden-Rütihof, CH;
Johan Abrahamsson, Wettingen, CH;
Martin Kriegel, Unterehrendingen, CH;
ABB Technology AG, Zurich, CH;
Abstract
The heavy-duty circuit breaker contains a first moveable arcing contact piece and a second moveable arcing contact piece as well as an auxiliary drive for driving the second arcing contact piece. An arc may burn between the arcing contact pieces. The heavy-duty circuit breaker has a heating chamber for temporarily storing quenching gas heated by the arc and a throat for guiding a quenching gas flow, which throat is connected to the heating chamber by a channel. The throat can be blocked by one of the two arcing contact pieces, which is the blocking contact piece. The auxiliary drive is designed such that, during an opening operation, a movement direction reversal of the second arcing contact piece from a movement in opposite directions to a movement in the same direction of the two arcing contact pieces takes place, if the throat is no longer blocked by the blocking contact piece.