Method and apparatus for washing a porous mat
US4907426A · kind A · utility
4Cited by
8References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 11, 1987 |
| Grant date | Mar 13, 1990 |
| Priority date | — |
| Expiry date | Sep 11, 2007 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06B1/148
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A retainer maintains a body of standing washing liquid against the outside surface of a mat, such as a pulp mat. The mat moves on a vacuum screen which draws washing liquid from the body of liquid through the mat to clean it. The retainer pivots to adjust different mat heights and allows clumps of material on the mat to pass underneath the retainer. Clumps on the mat are also smoothed into the mat as the clumps pass underneath the retainer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.