Filter element and method of making a filter element
US4838905A · kind A · utility
55Cited by
7References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 3, 1987 |
| Grant date | Jun 13, 1989 |
| Priority date | — |
| Expiry date | Sep 3, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2031/14
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A filter element comprises a relatively rigid fluid-permeable cylinder (5), around which is provided a body (7) of non-woven fibrous filter material. A jacket (6) of permeable material is positioned around the outer surface of the filter material, and is heat-shrunk onto the filter material in order to hold this under substantially uniform radial compression over the whole of its area.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.