Moisture draining inside-out reverse flow air filter, mold and method
US6537339B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 4, 2001 |
| Grant date | Mar 25, 2003 |
| Priority date | — |
| Expiry date | May 4, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D46/0031
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An inside-out reverse flow air filter element (20) has a resiliendtly compressible molded lower end cap (48) having molded drainage surfaces including a molded raised central dome (72) shedding moisture radially outwardly and downwardly, a plurality of molded drainage holes (70, 74, 76, 78) spaced radially outwardly of and below the top of the central dome, and a plurality of radial segments (98, 100, 102, 104, 110, 112, 114, 116), an annular trough (80) and tapered slope surfaces (82, 84) providing desired drainage. A mold (130) has a plurality of upstanding segments (136, 138, 140, 142) having posts (144) and ramps (146) forming the drainage structure, and locator faces (152) engaging, guiding and locating the annular filter media (34) in the mold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.