Proportional valve
US4790345A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 17, 1988 |
| Grant date | Dec 13, 1988 |
| Priority date | — |
| Expiry date | Feb 17, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/5109
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A fluid flow control proportional valve having structure for providing mounting therein of any one of a plurality of different solenoid coils having different electromechanical characteristics for providing desired positioning of the movable valve thereof. The solenoid armature is slidably mounted within the solenoid tube by structure providing extremely low friction so as to provide improved accuracy in correspondence between the current flow through the solenoid coil and resulting positioning of the spool assembly of the valve. The structure for mounting the armature in the solenoid tube further defines a seal between the armature and solenoid tube.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.