Expandable filter assembly
US5133789A · kind A · utility
8Cited by
8References
7Claims
0Family size
Inventor
Key dates
| Filing date | Nov 13, 1991 |
| Grant date | Jul 28, 1992 |
| Priority date | — |
| Expiry date | Nov 13, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2275/203
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A filter assembly includes a filter media unit and a frame unit. The frame unit is expandable and contractible whereby various filter media unit sizes can be accommodated. The frame unit includes a plurality of crossed legs that are pivotally connected together, and snap fastener assemblies are used to releasably attach the frame unit to the filter media unit body. Locking pivot pins can be used to attach adjacent legs together.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.