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:
Nov. 12, 2002
Filed:
Mar. 17, 2000
ABB Oy, Helsinki, FI;
Abstract
The invention relates to a circuit breaker, which is in a fault situation arranged to disconnect an electrical apparatus, such as a distribution transformer, from an average voltage network or a high voltage network at each terminal. At least one link-spring mechanism is arranged at a shaft of the circuit breaker for holding contacts live in connected position and for pushing them apart to the extreme disconnected position when disconnected, while the shaft is brought over the dead spot of its turning. For an initial release, the shaft is at each phase provided with a lever arm, each lever arm at each phase being arranged to turn by a trip pin of a striker of a high voltage fuse the shaft of the circuit breaker and thus the moving contacts of all phases from said connected position over the dead spot of turning said shaft.