Motorcycle engine lubricating oil filter apparatus
US4935128A · kind A · utility
7Cited by
5References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 6, 1988 |
| Grant date | Jun 19, 1990 |
| Priority date | — |
| Expiry date | Jun 6, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D35/147
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An oil filtering apparatus includes a check valve at the bottom of and within a cylindrical porous filter unit, to pass oil directly into an oil tank in case of clogging of the filter unit or cartridge. Channeling in the check valve inverted cap by-passes flow around the valve within the cap, when the valve is depressed; and a well formed around the cap collects dirt and other particles, within the filter unit lower interior.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.