Electromagnetic spool valve
US8397759B2 · kind B2 · utility
10Cited by
8References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 27, 2009 |
| Grant date | Mar 19, 2013 |
| Priority date | — |
| Expiry date | Nov 13, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/87241
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
The electromagnetic spool valve of the present invention includes a movable linear solenoid section, first and second spools that are coaxially provided in inner space of a valve body so as to switch a state of communication and discommunication among plural ports of the electromagnetic spool valve, a first spring member provided between the first and second spools, and a second spring member provided between a cap member and the second spool. The spring load of the second spring member is set to be greater than the spring load of the first spring member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.