Sealing arrangement, for use with, and in combination with, a steam and fuel oil control and furge valve, and a valve seat therefor
US5649567A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 12, 1995 |
| Grant date | Jul 22, 1997 |
| Priority date | — |
| Expiry date | Jun 12, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/8704
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A circular body, having a throughgoing orifice, an externally threaded periphery, and a pair of stepped recesses, defines a valve seat for a reciprocating piston. A retaining ring is made fast in one of the recesses, and a seal which contracts upon cooling to the ambient, after having been exposed to elevated temperatures, is set in the other recess. The seal is formed of a composite of plastic in which are dispersed carbon fibers to render the seal resistant to creep. A housing having a pair of chambers formed therein has the orificed body and piston interposed between the chambers for valvingly controlling inter-chamber communication.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.