Accumulator loading valve
US5209255A · kind A · utility
6Cited by
4References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 16, 1990 |
| Grant date | May 11, 1993 |
| Priority date | — |
| Expiry date | Nov 16, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7762
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
An accumulator loading valve is provided which is adapted for elevated pressures, which requires but little space, and which has a pump connection (1), a reservoir connection (20), a priority valve (7) between the consumer connection and the accumulator connection, and a pilot valve (4) being controlled by the accumulator pressure. The improvement is that the operating piston of the two-position pilot valve (4) is prestressed by a spring (28) having a constant spring rate and that the cross section of the valve inlet (19) is smaller than the cross section of the valve discharge (20).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.