Ash and dust removal method
US7517412B2 · kind B2 · utility
0Cited by
5References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 28, 2006 |
| Grant date | Apr 14, 2009 |
| Priority date | — |
| Expiry date | Apr 19, 2027 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2301/511
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A method of removing dust, dirt and the like from the surface of a paper substrate comprises the steps of transporting the paper substrate along a path of travel, and training the paper substrate over and in direct contact with at least a portion of the outer surface of a vacuum drum having openings therein. Suction is applied to the openings as the paper moves over the drum at a slightly different linear velocity from the surface velocity of the drum. Dust, dirt and the like are drawn away from one surface of the paper substrate through the openings of the drum as the paper substrate sweeps over the vacuum drum surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.