Control valve
US4645176A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 18, 1985 |
| Grant date | Feb 24, 1987 |
| Priority date | — |
| Expiry date | Jul 18, 2005 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K31/06
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A control valve comprising a vertical tubular yoke having a bottom wall, a solenoid mounted on the upper end of the yoke for giving a force of attraction the magnitude of which is in proportion to the value of input current, the solenoid having an operating rod directed downward and movable longitudinally thereof by the force of attraction, a valve body connected to the bottom wall of the yoke, a valve stem vertically movably supported by the valve body and having an upper portion extending upward from the valve body into the yoke, and conversion means housed in the yoke for converting the force of attraction acting on the operating rod to a displacement of the valve stem.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.