Method for manufacturing filter element
US6013214A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 13, 1997 |
| Grant date | Jan 11, 2000 |
| Priority date | — |
| Expiry date | Nov 13, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2239/10
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
In a filter manufacturing method, during a time period from the start of the suction of the slurry to a point in time when fibers in the slurry accumulate on the outer peripheral surface of the protector to a prescribed thickness, the protector and its leg portions are held spaced away from each other. The leg portions are moved toward the protector so that the leg portions are disposed at a position spaced by a uniform distance from the outer peripheral surface of the protector and the suction operation is continued. Thus, the slurry containing the fibers therein can be easily caused to flow deeply into recess portions of a fin-like portion with no fiber being caught between the protector and the leg portions, thus reducing non-walled portions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.