Reciprocating fluid pump having a hall switch
US4343597A · kind A · utility
8Cited by
7References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 11, 1980 |
| Grant date | Aug 10, 1982 |
| Priority date | — |
| Expiry date | Apr 11, 2000 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01L25/08
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An electromagnetic fluid pump having a magnetic circuit responsive to a predetermined position of a reciprocating magnetically permeable piston is disclosed. The reciprocating piston closes the magnetic circuit at the end of its pumping stroke increasing the value of the signal produced by a hall effect switch. The increased value of the generated signal energizes a solenoid coil returning the piston to a cocked position against the force of a resilient member which urges the piston forward on its pumping stroke.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.