Aquarium filter containing a cartridge clog indicator
US9826722B2 · kind B2 · utility
2Cited by
13References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 3, 2014 |
| Grant date | Nov 28, 2017 |
| Priority date | — |
| Expiry date | Feb 11, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2209/445
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
An aquarium filter and a method of indicating reduced flow through the filter. The aquarium filter includes a first chamber, a second chamber, and a filter cartridge separating the first chamber and the second chamber. A first flow path is defined through the filter cartridge separating the first chamber and the second chamber. The aquarium filter also includes spillway defining a second flow path and an indicator positioned in the second flow path.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.