Unloading arrangement for hydraulic swing circuit or the like
US4382360A · kind A · utility
12Cited by
8References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 15, 1980 |
| Grant date | May 10, 1983 |
| Priority date | — |
| Expiry date | Sep 15, 2000 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H61/433
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A closed loop hydraulic swing circuit is provided with crossover auxiliary actuating connections between the pump control lines and the system relief valves to cause the relief valves to open at lower than maximum system pressure in an unloading action that limits braking when a coasting load is causing the motor to return more fluid than the pump can accept.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.