High capacity hybrid multi-layer automotive air filter
US6811588B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 1, 2002 |
| Grant date | Nov 2, 2004 |
| Priority date | — |
| Expiry date | Nov 14, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S55/24
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An automotive air filter including natural fiber filter media region, having piteous, absorbent, wickable natural fibers, a synthetic fiber filter media region including, absorbent spunbond polyester filters. The natural fiber region receives an influent fluid stream containing particles, trapping some particles. The manufactured fiber region removes residual particles, producing a filtered effluent stream. The fluid stream passes unimpaired through the fiber pores. Two structural mesh layers sandwich natural and manufactured fiber regions. Oil is disposed in the oleophilic cotton mesh. Fiber regions have layers disposed in gradient density arrangement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.