Extended life combination filter
US6709575B1 · kind B1 · utility
62Cited by
15References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 21, 2000 |
| Grant date | Mar 23, 2004 |
| Priority date | — |
| Expiry date | May 21, 2021 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01M2001/1035
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A filtering system (10) is provided for filtering working fluid from a machine (12) and includes a cleanable filter (16) and a centrifuge (82) where filter capacity is too low for a permanent filter yet flow rate is too high for a centrifuge. The system transfers the contaminant storage function from the cleanable filter to the centrifuge. A simple effective centrifuge is provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.