Self-holding type solenoid valves
US5584466A · kind A · utility
22Cited by
11References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 21, 1994 |
| Grant date | Dec 17, 1996 |
| Priority date | — |
| Expiry date | Oct 21, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H47/226
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A self-holding type solenoid valve has an exciting coil 1 and an exciting circuit that switches the direction of flow of exciting current passing through the coil. When a positive exciting current flows through the coil, a movable iron core is attracted to a stationary iron core and held in the attracted position by a self-contained permanent magnet. When a reversed current flows through the coil, a return spring releases the movable iron core away from the stationary iron core.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.