Particulate filter
US6776815B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Oct 19, 2001 |
| Grant date | Aug 17, 2004 |
| Priority date | — |
| Expiry date | Jan 9, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S55/30
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A particulate filter can be prevented from being damaged. The ashes can be removed from the particulate filter without by burning. A non-woven welding operation for a sealing portion can be simplified. The operability is enhanced by facilitating an insertion of a multi-layer body into a heat resisting container. The number of recycling processes executed when particulate matters such as soot are accumulated on the particulate filter is made as small as possible. A particulate filter 1 comprises an axial core 7 composed of a heat resisting metal, a multi-layer body 3 formed by winding said axial core with a multi-layer member into which a non-woven fabric 11 and a corrugated sheet 13 each composed of a heat resisting metal are tiered, and a heat resisting container 5 charged with said multi-layer body 3.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.