Filter assembly with filter elements separated by spacers
US5271838A · kind A · utility
16Cited by
17References
37Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 13, 1991 |
| Grant date | Dec 21, 1993 |
| Priority date | — |
| Expiry date | Sep 13, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D25/26
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A filter assembly includes a housing having an inlet and an outlet, at least two filter elements stacked inside the housing, and a spacer positioned between the filter elements. The spacer includes a body having an opening which is larger than the inner diameter of at least one of the filter elements and is no smaller than about one-third of the outer diameter of a filter element. The spacer is free of any structure which extends into the opening.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.