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:
Sep. 18, 2012
Filed:
Apr. 30, 2010
Klaus Grül, Alfter, DE;
Michel Hess, Winterthur, CH;
Harald Krieger, Neuhaus, DE;
Siemens Aktiengesellschaft, Munich, DE;
Abstract
An apparatus is disclosed for mutually locking two switches, in particular circuit breakers, with two plungers which move in opposition to one another via a forced mechanical coupling. When one switch opens, one plunger is shifted into its opening position and the other plunger is shifted into its locking position. In order to achieve a maintenance-free apparatus, at least one embodiment of the invention proposes that each plunger has a toothed rack, which meshes with a gearwheel, on which in each case one radial lever is arranged. The levers are connected in articulated fashion to one another via a connecting rod and a stop lever is mounted in rotary fashion on each gearwheel and, when the plungers are located in the zero position, bears in each case against a fixing stop. Furthermore, a driver is located on each gearwheel and bears in each case against a stop face formed on the stop lever, wherein, when a plunger is shifted, in particular when a switch opens, one driver pivots the stop lever towards a spring, while the other driver is removed from the stop face of the stop lever.