Method and apparatus for filtering impurities out of fluid
US4655914A · kind A · utility
29Cited by
13References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 26, 1984 |
| Grant date | Apr 7, 1987 |
| Priority date | — |
| Expiry date | Nov 26, 2004 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01M2001/1057
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A filtering apparatus for removing impurities out of a lubrication oil for use in an internal combustion engine including low and high density filters having inlets commonly connected to an inlet conduit through which the lubrication oil to be filtered is supplied, an orifice arranged in an outlet conduit of the low density filter to produce a reduced pressure due to a fast oil flow and a conduit connected between an outlet of the high density filter and the orifice. Due to the reduced pressure applied to the outlet of the high density filter, a part of the oil is effectively sucked into the high density filter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.