Control valve
US5385328A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 11, 1993 |
| Grant date | Jan 31, 1995 |
| Priority date | — |
| Expiry date | Jun 11, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05D16/2086
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
The present invention refers to a control valve provided with a valve closure member (5) for closing and opening a valve opening. The valve closure member (5) has attached thereto a piston (11), which is arranged such that it is movable within a housing (13), said piston (11) being adapted to be acted upon by the force of a spring (spring 27) in one direction and by a fluid pressure in the opposite direction. A property characterizing the present invention is that the length of the path of movement of the piston (11) can be adjusted with the aid of a positioning means (29, 73). In accordance with a preferred embodiment, the positioning means (29) consists of a rod (31), which is adapted to be axially moved in the direction of movement of the piston (11).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.