Geothermal valve
US4513947A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 18, 1983 |
| Grant date | Apr 30, 1985 |
| Priority date | — |
| Expiry date | Jul 18, 2003 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K3/20
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A valve of special usefulness in handling solids-containing or solids-producing fluids comprises a floating valve seat comprised of inner and outer rings, the outer ring being fixed within the valve body and the inner ring being urged directly from the outer ring by one or more springs against a gate element controlling the flow of fluids through the valve. The springs are housed within chambers provided by aligned cavities in the inner and outer rings while similarly aligned notches house a bellows or accordian shaped flexible metal seal. The flexible metal seal is in contact with the fluid but prevents entry of fluid between the rings to the spring; thus, the action of the inner and outer rings is not impeded by solids depositing from the fluid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.