Aquarium air pump
US5052904A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Aug 17, 1990 |
| Grant date | Oct 1, 1991 |
| Priority date | — |
| Expiry date | Aug 17, 2010 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01K63/047
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An aquarium air pump includes an electromagnetic motor-operated pump unit positioned in the housing of the pump and including two vibrating arms energized by the motor and each carrying a pump diaphragm forming with a closure member of the pump unit casing a pump chamber. Each vibrating arm is positioned on the casing to be pivoted to an operative position to close the respective closure member and a non-operative position in which the arm can be removed from the casing and interchanged. The pump housing includes a bottom part and a top part connectable to each other and sealed in the connected position by a peripheral seal. Cushioning cups support the pump unit in the pump housing to absorb vibrations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.