Valve assembly
US4137935A · kind A · utility
48Cited by
7References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 7, 1977 |
| Grant date | Feb 6, 1979 |
| Priority date | — |
| Expiry date | Oct 7, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/4273
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A valve assembly for closing and sealing an inlet which is full of large granular dry material including a dome-like valve member mounted for rotation to open or close the inlet and a deformable resilient sealing ring which may be inflated by gas pressure to engage the valve member in its closed position to produce a gas-tight seal across the valve member, the sealing ring being arranged within the valve assembly to minimize abrasive wear on the ring from the granular material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.