Manual relief gas vent
US5249696A · kind A · utility
5Cited by
5References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 7, 1992 |
| Grant date | Oct 5, 1993 |
| Priority date | — |
| Expiry date | Aug 7, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/8359
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A drum lid for a ventable drum has a depression formed in the surface of the lid. A vent valve is placed in the depression and extends through the lid. The valve has a valve outlet which opens into the reservoir in the lid. During venting the reservoir is filled with water and the valve stem is slowly opened. The gas escapes into the water in the reservoir in the form of bubbles. When the bubbles stop the tank is vented and the lid can be removed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.