Apparatus, method, appliance, and computer program product for operating a relay
US10573476B2 · kind B2 · utility
0Cited by
6References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 23, 2015 |
| Grant date | Feb 25, 2020 |
| Priority date | — |
| Expiry date | Feb 5, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2231/012
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Contacts of a relay may glue together during operation. This state may be measured and a controller may issue a pulse width-modulated signal at a certain duty cycle and frequency in order to vibrate the relay contacts to make them open again. Once this is the case, the process is stopped. This process may be repeated a certain number of times, and if successfully degluing is not possible, a notification may be generated. Also after a certain number of degluing cycles, a signal may be generated to indicate replacement of the relay.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.