Fast response shut-off valve
US4781220A · kind A · utility
3Cited by
4References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 4, 1987 |
| Grant date | Nov 1, 1988 |
| Priority date | — |
| Expiry date | May 4, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/86759
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
An improved fast response shut-off valve for use with pneumatic tools and the like that utilizes a solenoid for holding the valve open and utilizes fluid pressure for driving the valve closed. Further, a field suppressor may be utilized to decrease the magnetic flux strength of the solenoid coil very rapidly increasing the rapidity with which the valve can be moved from the open to closed position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.