Liquid filter with a replaceable filter element
US6506303B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 4, 2000 |
| Grant date | Jan 14, 2003 |
| Priority date | — |
| Expiry date | Dec 4, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2201/4084
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Liquid filter arrangement with interchangeable filter element and including a pot-like filter housing in which the filter element is disassemblably inserted between a liquid inlet to the chamber and an outlet situated below, in the lower section of the filter housing, for filtered liquid from the chamber. In the liquid chamber is arranged a central tube about which is arranged the filter element which is provided at the bottom with an annular end piece sealingly surrounding the central tube, and is provided upwards with an end disc by which the filter element is fastened to a lid fastened sealingly in the upper section of the filter housing. When the filter element is in its fitted position, the end piece blocks the inlet to a draining duct in the central tube, which duct leads to a draining outlet from the chamber. The inlet to the draining duct is so placed relative to the end piece and the lid that as the filter element is taken out of the chamber the duct inlet is freed and opened before the sealing effect between the lid and the filter housing ceases.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.