Two speed valves and bi-directional motor system
US4194366A · kind A · utility
2Cited by
3References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 13, 1978 |
| Grant date | Mar 25, 1980 |
| Priority date | — |
| Expiry date | Jun 13, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S60/905
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A two speed valve and bi-directional motor system is provided having a pair of motors, means for delivering pressure fluid selectively to either side of said motors, a two speed valve means receiving fluid on one side of said motors to selectively direct the fluid to one or both motors to provide high or low speed operation thereof and flow sensing means automatically connecting the discharge from the motors to the one motor not receiving fluid when the two speed valve is shifted to divert all fluid to one motor so that fluid is recirculated through said motor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.