Electromagnetic air pump
US12253074B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 5, 2023 |
| Grant date | Mar 18, 2025 |
| Priority date | — |
| Expiry date | Jul 20, 2043 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B45/043
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The present invention discloses an electromagnetic air pump including an air chamber operable to be compressed or expanded. The air chamber is defined by a platform surface and a rubber cap operable to be pressed downward. The rubber cap includes a support and a cover. During the operation of the electromagnetic air pump, the cover is configured to bear against the support with the platform surface when the cover is pressed downward. When the air chamber is compressed or expanded, each pair of geometrically symmetrical parts of the cover corresponds to a pair of displacement changes relative to the platform surface, wherein a difference between the pair of displacement changes is not greater than 5%. Thus, the rubber cap is provided with an effect of a substantially uniform stress.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.