Relief valve with abnormal pressure indicator means
US5664601A · kind A · utility
5Cited by
3References
1Claims
0Family size
Inventor
Key dates
| Filing date | Jan 14, 1997 |
| Grant date | Sep 9, 1997 |
| Priority date | — |
| Expiry date | Jan 14, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/8158
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A relief valve with abnormal pressure indicator means, including a valve rod with a valve flap moved in a casing to close/open the passage, a cap mounted on the valve rod outside the casing, and an indicator coupled to the valve rod and having a display face shaded by the cap, the indicator being forced to fall by the weight of a weight when the valve flap is forced to open the passage by ah abnormal high pressure, causing the display of the indicator to be shown.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.