Impeller assembly for aquarium power filter
US5238367A · kind A · utility
16Cited by
11References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 13, 1992 |
| Grant date | Aug 24, 1993 |
| Priority date | — |
| Expiry date | Apr 13, 2012 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01K63/045
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A water pump including a rotating impeller is located between the two filter chambers, and pumps water from the aquarium tank, via the inlet conduit, into a corridor which communicates with the two filter chambers. The impeller is constructed with relatively closely spaced radially extending blades, each of which is formed of a circular disk. A base edge, or chord, of each blade is inclined upon a frustoconical surface of a central hub of the impeller.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.