Pressure unloading apparatus for a diaphragm pump
US4019837A · kind A · utility
7Cited by
5References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 30, 1975 |
| Grant date | Apr 26, 1977 |
| Priority date | — |
| Expiry date | May 30, 1995 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B49/022
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Apparatus is disclosed for unloading excess pressures developed in a hydraulic diaphragm pump, wherein the pressure of the pumped fluid is sensed by a control diaphragm connected to an unloading valve which is placed in a passage connecting the hydraulic displacement chamber with a hydraulic oil reservoir.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.