Mini injector valve
US4643359A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 19, 1985 |
| Grant date | Feb 17, 1987 |
| Priority date | — |
| Expiry date | Mar 19, 2005 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M2200/50
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A mini-injector valve having a valve seat member, a movable armature, a stator, a coil spring, and solenoid coil disposed in a magnetically permeable housing. The valve seat member has an axial passageway connected to the apex of a conical valve seat. The armature has a peripheral flange adjacent to the internal walls of the housing and an axial valve stem for engaging the conical valve seat to occlude the axial passageway. The armature is magnetically insulated from the housing by a non-magnetic bushing which coaxially supports the armature for reciprocation in the housing. The solenoid coil is wound on a plastic bobbin molded onto the stator providing excellent magnetic coupling between the solenoid coil and the stator. The coil spring cirscumscribes the armature between the peripheral flange and the bobbin, and biases the armature away from the stator and the valve stem into engagement with the conical valve seat. The mini-injector valve has a linear fluid delivery in response to electrical signals having a pulse widths down to 1.1 milliseconds.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.