Electromagnetic switching device and method for the operation thereof
US7933109B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 16, 2005 |
| Grant date | Apr 26, 2011 |
| Priority date | — |
| Expiry date | May 16, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2071/048
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Disclosed is an electromagnetic switching device including a number of fixed contact pieces, a solenoid-operated mechanism, a contact support which can be moved counter to restoring devices in at least one embodiment, with the aid of the solenoid-operated mechanism and on which a number of movable contact pieces are arranged, and an off stop for the contact support. A sensor is provided, in at least one embodiment, for detecting the position of the contact support while a control unit is provided which is connected to the sensor and regulates and/or controls the solenoid-operated mechanism during a switch-off process in order to decelerate the contact support before the same hits the off stop. Also disclosed is a method for operating such a switching device. The contact support, in at least one embodiment, transmits only a small momentum to the off stop, thus reducing the load applied to the involved parts. Such a switching device therefore has a longer service life than conventional switching devices.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.