Solenoid fail-safe using current feedback as a diagnostic input
US6111514A · kind A · utility
15Cited by
10References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 18, 1997 |
| Grant date | Aug 29, 2000 |
| Priority date | — |
| Expiry date | Dec 18, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T2270/406
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The current through the coil of a solenoid valve is monitored for a deflection which is generated when the valve armature shifts in response to the current being applied to the coil. A lack of detection of the deflection is indicative of a solenoid malfunction and causes generation of an alarm signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.