Filter membrane with flexure
US5004542A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 22, 1990 |
| Grant date | Apr 2, 1991 |
| Priority date | — |
| Expiry date | Jun 22, 2010 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D63/081
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A filter of the type incorporating a porous filter membrane 1. Frequently such membranes are very fragile, and the invention describes an improved way of mounting them within the housing. Attached to a perimeter portion of the membrane 1 is a thin strip 8 of flexible material such as polypropylene. The strip 8 is attached, on the one hand, to the base 4 of the filter housing by a first joint 10 and, on the other hand, to the perimeter of the membrane by a second joint 9. Between the two joints is a region of flexure which enables the membrane to float relative to the housing, thus isolating the membrane from relative movement between the membrane and the housing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.