High flow proportional pressure reducing valve
US6161585A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 26, 1999 |
| Grant date | Dec 19, 2000 |
| Priority date | — |
| Expiry date | Mar 26, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/86702
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A proportional solenoid operated pressure reducing control valve includes an elongate cylindrical housing having an axial throughbore between an outer end and an inner end defining an interior chamber. The inner end is receivable in a solenoid, in use. A plurality of axially spaced side port openings proximate the outer end define a cylinder port and a pressure port. A tank opening proximate the outer end defines a tank port. A valve member comprises a cylindrical body movable in the chamber at the outer end for selectively controlling fluid flow through the interior chamber between the tank port and the cylinder port in a neutral position, or modulating the cylinder port between the pressure port and the tank port in a regulated position. The valve member includes an axially extending throughbore. Dividing means in the valve member separate the valve member throughbore to define an outer chamber and a control chamber. A solenoid plunger is movable in the interior chamber at the inner end and is operatively associated with the valve member for positioning the valve member responsive to energization of a solenoid, in use. The valve member further comprises a first passage therethrou…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.