Diaphragm pump having spool and guide members
US4378201A · kind A · utility
7Cited by
5References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 19, 1980 |
| Grant date | Mar 29, 1983 |
| Priority date | — |
| Expiry date | Nov 19, 2000 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B43/067
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An improved hydraulic pump wherein a piston is mechanically reciprocated by a suitable drive in an oil chamber, and a second piston is caused to reciprocate by the oil pressure developed in the chamber, the second piston also reciprocating in a pumping chamber to cause the pumping of a liquid through the pumping chamber; a diaphragm attached to the second piston provides liquid isolation between the oil chamber and the pumping chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.