Electromagnetic vibrating diaphragm pump
US9441623B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 2, 2012 |
| Grant date | Sep 13, 2016 |
| Priority date | — |
| Expiry date | Mar 4, 2033 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B45/047
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An electromagnetic vibrating diaphragm pump enabling improvement of working efficiency in fitting center plates to a diaphragm, reduction of production cost and stabilization of performance between products. The disk-like second plate includes the cruciform rising portion having the concave portions, and the second ring rib. The first ring rib is formed at the center of the surface of the disk-like first plate coming into contact with the diaphragm, and a fitting groove provided with convex portions to be press-fitted to the concave portions is formed by this first ring rib. The diaphragm has the protrusions for preventing the diaphragm from being pressed out on the periphery of the through-hole at its center, and the protrusions are engaged with the ring ribs from the circumference of the protrusion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.