Dual belt conveyor for multi-ply continuous paper tubing
US4984728A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 24, 1989 |
| Grant date | Jan 15, 1991 |
| Priority date | — |
| Expiry date | Jan 24, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H35/10
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
In a dual belt conveyor for multi-ply continuous paper tubing having upper and lower endless conveyor belts between which the tubing is fed, turning point pulleys and backing rollers for the respective conveyor belts are longitudinally offset so that the tubing is moved through the conveyor along an undulating path. The inlet turning point pulley for the upper conveyor belt is positioned in front of the equivalent pulley for the lower conveyor belt so that the upper belt will contact the incoming tubing before the lower belt. A brake plate is provided under the inlet pulley of the upper belt over which plate the tubing is fed. The arrangement avoids the formation of undesirable waves and wrinkles in the tubing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.