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:
Oct. 26, 2010
Filed:
May. 15, 2007
Applicants:
Helmut Heiermeier, Wutöschingen, DE;
Kurt Kammerl, Griessen, DE;
Timo Kehr, Birrhard, CH;
Stephan Grob, Baden, CH;
Inventors:
Helmut Heiermeier, Wutöschingen, DE;
Kurt Kammerl, Griessen, DE;
Timo Kehr, Birrhard, CH;
Stephan Grob, Baden, CH;
Assignee:
ABB Technology AG, Zurich, CH;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01H 33/88 (2006.01);
U.S. Cl.
CPC ...
Abstract
A circuit breaker comprises a puffer volume () and at least one overpressure valve () for discharging gas from the puffer volume (), if the pressure therein exceeds a given threshold. The overpressure valve () is formed by a piston () and a spring () as well as by a cavity () in the stationary support body () of the moveable contact assembly (). The overpressure valve () is of compact and simple design, has low hysteresis and large cross-section.