Combination manway cover and emergency pressure relief apparatus
US5425466A · kind A · utility
12Cited by
13References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 22, 1994 |
| Grant date | Jun 20, 1995 |
| Priority date | — |
| Expiry date | Feb 22, 2014 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L55/115
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A combination manway cover and pressure relief apparatus (2) for a tank (4) having a manway opening (14) and containing a fluid. A body (12) covers the manway opening and is guided and biased along a substantially vertical, linear path (16). The body is guided along the path by bolts (18) which pass through a plurality body, gasket and flange bolt holes (22, 23, 24). The weight of the body biases the body along the path toward the manway opening. Pressure relief for the tank is provided when the fluid pressure within the tank moves the body away from the manway opening.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.