Self sealing gate valve
USRE29299E · kind E · reissue
13Cited by
18References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 22, 1976 |
| Grant date | Jul 12, 1977 |
| Priority date | — |
| Expiry date | Nov 22, 1996 |
Classification
- Technology area (CPC —)General
Abstract
.Iadd.A gate valve structure having a slab gate member and a pair of opposed seat assemblies on opposite sides of the gate member. The seat assemblies loosely fit in recesses in the housing and the dimensions of the gate member, seat assemblies and housing recesses are such that there is controlled interference between all sealing surfaces on assembly. An emergency sealant system provides emergency sealant to the face of the seat assemblies. .Iaddend.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.