Valve with improved sealing structure
US4491300A · kind A · utility
3Cited by
6References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 27, 1981 |
| Grant date | Jan 1, 1985 |
| Priority date | — |
| Expiry date | Nov 27, 2001 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K1/2261
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A valve including a cast or nodular iron body and a cast or nodular iron valve member having sealing surfaces which seal the fluid passage in the closed position of the valve member. At least one of the sealing surfaces in the closed position is formed by a bonded powder metal layer having high wear and corrosion resistant properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.