Filter element with air vent
US9956508B2 · kind B2 · utility
0Cited by
7References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 8, 2014 |
| Grant date | May 1, 2018 |
| Priority date | — |
| Expiry date | Aug 30, 2034 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01M2001/1007
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method and means are described for rapidly evacuating trapped air from the top of a top-loaded liquid filter housing. An air vent means is provided that prevents complete sealing between a bypass valve and a sealing surface on an endcap of a replaceable filter element. The air vent means enables the rapid evacuation of trapped air in the top of the housing chamber, but permits only a negligible flow rate of liquid, for example oil, through the air vent means once air is evacuated due to high viscosity ratio of liquid, such as oil, versus air.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.