Solenoid, solenoid valve, and damper
US11721464B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Mar 6, 2019 |
| Grant date | Aug 8, 2023 |
| Priority date | — |
| Expiry date | Apr 30, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F2007/086
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
To provide a solenoid, a solenoid valve, and a damper in which when the amount of current supplied to the solenoid is small, the thrust of the solenoid to bias an object in one direction can be made small, and at the same time, even when the solenoid is not energized, the object can be biased in the same direction as that of the thrust. The solenoid includes a coil, a first movable iron core and a second movable iron core that are attracted in a direction away from each other by energizing the coil, a coil spring that biases the first movable iron core toward the second movable iron core, and a leaf spring that restricts the approach of the first movable iron core and the second movable iron core.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.