Diaphragm pump
US4188170A · kind A · utility
5Cited by
3References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 13, 1978 |
| Grant date | Feb 12, 1980 |
| Priority date | — |
| Expiry date | Apr 13, 1998 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B43/067
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A diaphragm pump includes a pump chamber, a pressure fluid chamber, a diaphragm partitioning the interior of the pump into the pump chamber and the pressure fluid chamber, a cylinder communicating with the pressure fluid chamber, and a plunger reciprocable within the cylinder. The pressure fluid chamber or the cylinder communicates with a pressure fluid reservoir via a pressure regulating valve adapted to open when the pressure in the pressure fluid chamber is too high, and a valve adapted to open before the pressure in the pressure fluid chamber is too low, and to close when the pressure is restored to a given pressure level.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.