Filter element
US5954849A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 30, 1997 |
| Grant date | Sep 21, 1999 |
| Priority date | — |
| Expiry date | Sep 30, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2271/022
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A filter element includes first and second ends, an extension of filter media, an outer liner, an inner liner, and a sealing ring. The first end cap consists essentially of a foamed polyurethane having an as molded density of about 14-22 pounds per cubic foot. The sealing ring extends outwardly only from the outer surface of the first end cap. The sealing ring is a molded part of the first end cap and consists essentially of foamed polyurethane having an as molded density of about 14-22 pounds per cubic foot. The sealing ring has an axially directed top edge, first and second sidewall portions, and a base. The first and second sidewall portions are immediately adjacent to and angled from the top edge of the sealing ring.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.