Apparatus for mutually locking two switches, in particular circuit breakers
US8269119B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 30, 2010 |
| Grant date | Sep 18, 2012 |
| Priority date | — |
| Expiry date | Sep 9, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H9/26
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.