Control device of a large hydraulic distributor, in particular for public works appliances
US4093002A · kind A · utility
6Cited by
3References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 1, 1976 |
| Grant date | Jun 6, 1978 |
| Priority date | — |
| Expiry date | Jun 1, 1996 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF15B13/0402
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
The present invention relates to a control device for a controlled non-return valve provided in large hydraulic distributors. During the mode of operation where the double acting hydraulic ram is in a non-movable state, a means is utilized to communicate a control pressure to the one-way non-return check valve to positively maintain the check valve in a closed state thereby eliminating the accidental opening of the return valve and maintaining the double acting hydraulic ram in its initial position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.