Control valve
US5741002A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 21, 1995 |
| Grant date | Apr 21, 1998 |
| Priority date | — |
| Expiry date | Dec 21, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7761
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A control valve includes a valve body having an inlet port and an outlet port which receives an orifice plate mounted to the valve body. Set within the valve body is a plunger which cooperates with the orifice plate to selectively communicate the inlet port with the outlet port. The plunger is acted upon by a stem for displacement in an axial direction between a closing position and an opening position and provided with a servo system for maintaining the desired position of the plunger. The servo system includes a slide gate which is connected to the stem and opens and closes the fluid passageways between the inlet port, outlet port and a pressurizing chamber above the plunger.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.