High pressure fluid pump
US4749343A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 8, 1986 |
| Grant date | Jun 7, 1988 |
| Priority date | — |
| Expiry date | Aug 8, 2006 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B17/046
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A high pressure fluid pump having a telescoping cylinder assembly disposed in a cylindrical sleeve. The telescoping cylinder assembly has a stationary member rigidly attached to the cylindrical sleeve and a telescoping member biased towards an outlet port. The telescoping member is reciprocated relative to the stationary member by the displacement of an armature in response to the intermittent energizing of a solenoid coil. An inlet valve connected to the telescoping member and an outlet valve connected to the stationary member provide a unidirectional fluid flow through the telescoping cylinder assembly with the reciprocation of the telescoping member. The outlet valve has a flat valve member which is biased against a valve seat provided at the end of the stationary member adjacent to the outlet port. The flat valve member is preferably made from a resilient elastomer which increases the efficiency of the pump and eliminates forward and back syphoning.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.