Magnetic detent joy stick and stack remote control valves
US4777981A · kind A · utility
22Cited by
1References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 18, 1987 |
| Grant date | Oct 18, 1988 |
| Priority date | — |
| Expiry date | May 18, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/87169
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A magnetic detent joy stick and stack remote control valve is provided having a traction magnet detent in which a magnet plate activated by the detent is constantly urged against the coil housing to prevent dirt from getting between the coil plate and coil housing face when the power is cut off and/or the valve is in neutral.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.