Gate valve
US4771805A · kind A · utility
34Cited by
13References
27Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 16, 1983 |
| Grant date | Sep 20, 1988 |
| Priority date | — |
| Expiry date | Nov 16, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7668
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A gate valve having a metal-to-metal seal between the gate (26) and the seat carrier (20) and a metal-to-metal seal between the seat carrier (20) and the valve body (10) with the seat carrier and valve body having complementary spaced frustoconical surfaces (18,22).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.