Cartridge relief valve with improved stability
US6805155B2 · kind B2 · utility
15Cited by
8References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 12, 2002 |
| Grant date | Oct 19, 2004 |
| Priority date | — |
| Expiry date | Nov 12, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7778
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A cartridge relief valve uses a piston design. The piston replaces a tube used in prior art relief valves. The piston makes the inventive relief valve easier to manufacture and more stable than prior art relief valves. This is due to the fact that, for a given size valve, the diameter of the piston is smaller than the diameter of the tube that it replaces. Furthermore, the diameter of the pilot seat of the inventive relief valve is also smaller than the diameter of the pilot seat of many prior art valves.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.