Tapered, spirally wound filter cartridge and method of making same
US4839037A · kind A · utility
63Cited by
10References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 6, 1987 |
| Grant date | Jun 13, 1989 |
| Priority date | — |
| Expiry date | Apr 6, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/1066
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A spirally wound filter cartridge and a method of making the same in which the cartridge includes an elongated, centrally disposed tube or mandrel, and a sheet of filtration material spirally wound around the tube such that the cartridge has a tapered configuration with a first end of the cartridge being greater in diameter than the second end. The present invention also relates to a filtration device having a filter cartridge housing adapted to receive the above mentioned tapered filter cartridge.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.