Air filtration apparatus
US8062397B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 21, 2009 |
| Grant date | Nov 22, 2011 |
| Priority date | — |
| Expiry date | Jun 22, 2030 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M35/02
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An air filter assembly for an evaporative emissions control canister used with an internal combustion engine fuel system. The assembly includes: a housing having: an air inlet formed in an upper portion of the housing; and an air outlet; and; a baffle disposed within the housing. The baffle extends vertically downward from the air inlet in the upper portion of the housing towards a bottom portion of the housing. The baffles forming a plurality of vertically extending channels interconnected through a horizontally interconnecting channel formed between a bottom edge of the baffle and the bottom portion of the housing. A first one of the vertically extending channel receives air entering the housing from the air inlet. The air passes downwardly in the first one of the channels, then passing laterally outwards through the horizontally interconnecting channel towards sidewalls of the housing, then passing upwardly through a second one of the vertically extending channels, and then finally exiting the housing through the air outlet. A filter structure is disposed in the second one of the vertically extending channels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.