Multilayer precision wound filter cartridge
US4660779A · kind A · utility
26Cited by
2References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 22, 1986 |
| Grant date | Apr 28, 1987 |
| Priority date | — |
| Expiry date | Apr 22, 2006 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2201/188
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method for making a precision wound tubular shaped filter cartridge wherein a filter medium comprising a roving is wound about a central foraminous core to provide a base inner and an outer helical winds of roving each provided with pluralities of both axial and circumferential flow passages wherein the circumferential flow passages of the inner and outer wind are radially aligned at the interface of the winds to provide unrestricted flow paths between the inner and outer wind.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.