Diaphragm pump
US9057366B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 16, 2010 |
| Grant date | Jun 16, 2015 |
| Priority date | — |
| Expiry date | Mar 8, 2032 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16J3/02
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A diaphragm pump (1) which has in at least one pump head (2) a working or pump diaphragm (3) which, by means of a clamping zone (4) arranged at its outer circumference, is clamped between two housing parts (5, 6) of a pump housing and which, between itself and a pump head part (6), borders a working or delivery chamber (8) and which, in a central zone (10), surrounds a diaphragm armature (11) which, on a side facing away from the working or delivery chamber (8) of the at least one pump head (2), is connected to a reciprocating drive (12) which is provided for generating an oscillating stroke movement of the working or pump diaphragm (3). The diaphragm pump according to the invention is characterized in that the annular zone arranged adjacent to the clamping zone (4) is formed as a guide zone (14) which, in the unloaded state of the working or pump diaphragm, is convexly curved and projects into the working or delivery chamber (8), with which guide zone (14) the working or pump diaphragm (3) rolls on a complementarily shaped annular or support zone (15) of the pump head (2) during the stroke movement of the working or pump diaphragm (3), and that a compensation zone (16) of the work…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.