Diaphragm gas pump
US4673336A · kind A · utility
Inventor
Key dates
| Filing date | Apr 3, 1986 |
| Grant date | Jun 16, 1987 |
| Priority date | — |
| Expiry date | Apr 3, 2006 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B45/04
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An oil free diaphragm gas pump for providing compressed gas and a gas vacuum is disclosed and includes a pressure tank, a concave pressure bulkhead, a first circular flange mounted on the pressure bulkhead and having a bevel on its inner edge, a round rigid diaphragm with an undulated circumferential periphery with its edge mounted on the bevel of the first circular flange, a round flexible diaphragm with an undulated circumferential periphery which matches the shape of the round rigid diaphragm and is mounted on the round rigid diaphragm, a second circular flange which together with the first circular flange presses together the flexible diaphragm and the rigid diaphragm, a prime mover for the purpose of moving the flexible diaphragm, and interchangable compressor and vacuum cartridge means alternately mounted between the diaphragms and the pressure tank for providing switching means for controlling the gas flow required for providing a compressor and a vacuum.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.