Filter container with double construction
US5256285A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 23, 1991 |
| Grant date | Oct 26, 1993 |
| Priority date | — |
| Expiry date | Dec 23, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2201/4046
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A filter container includes a sheet having a base with a liquid inlet pipe and a liquid exhaust pipe and a cap that is integrally attached to the base. A disposable unit container is housed inside the sheet, and the disposable unit container contains cartridge filters. The disposable unit container has a liquid inlet port and a liquid outlet port at a bottom portion thereof, these ports being provided with shut-off valves on the inside of the disposable unit container. The shut-off valves are engagable by the inlet and exhaust pipes on the base of the sheet so that the valves are open by engaging the disposable unit container with the base with the sheet, and are closed by removing the unit container from the base. The bottom end cap supports the lower ends of the cartridge filters above the inlet and outlet ports, and defines the inlet and outlet liquid flow paths. Upper end caps are also provided for sealing the upper ends of the cartridge filters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.