Oil filter apparatus
US6572768B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 25, 2002 |
| Grant date | Jun 3, 2003 |
| Priority date | — |
| Expiry date | Mar 25, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2201/4076
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An oil filter apparatus comprises a housing formed to include an interior region and an aperture, a drainage valve positioned in the interior region for movement relative to the housing between an opened position allowing oil to drain out of the interior region through the aperture and a closed position blocking drainage of oil out of the interior region through the aperture, a filter module positioned in the interior region to filter oil, a valve actuator coupled to the filter module, and an anti-rotation device positioned to block rotation of the filter module relative to the housing to guide the valve actuator into communication with the drainage valve to move the drainage valve to the closed position when the filter module is installed in the interior region.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.