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:
Jul. 18, 1978
Filed:
Sep. 14, 1976
Gerhard Grieger, Berlin, DE;
Joaquin Bohrdt, Berlin, DE;
Siemens Aktiengesellschaft, Munich, DE;
Abstract
Apparatus for controlling the drive for an hydraulically actuated high voltage power circuit breaker is disclosed. More particularly, the apparatus includes a number of position signal transmitter means each associated with a different one of the circuit breaker contact units. These means are each connected to respective freewheel clutches which are connected to the actuating member of a control switch means. The latter switch means is constructed so that it provides off commands to the breaker units only when all the transmitter means connected thereto are in an on or off position. The switch means is also continuously biased toward an off condition with the force of an energy accumulator.