Filter unit
US4147524A · kind A · utility
4Cited by
4References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 24, 1978 |
| Grant date | Apr 3, 1979 |
| Priority date | — |
| Expiry date | Apr 24, 1998 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D46/10
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A plurality of laterally spaced parallel tapes extend along each side of a strip of filter material in engagement with it, and the sheets and tapes are in accordion folded form so that there is a stack of integrally connected parallel filter sheets spaced apart by the portions of the tapes between them. Each tape has at its side of the stack exposed portions, along which a line of hardened adhesive extends to connect them and form a stiffening band, whereby there are parallel stiffening bands extending across each side of the stack of filter sheets.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.