Web tensioning device
US6775961B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 1, 2002 |
| Grant date | Aug 17, 2004 |
| Priority date | — |
| Expiry date | Aug 8, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65B2011/002
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A device for tensioning web, such as a plastics web dispensed from a shuttle in a wrapping machine, is disclosed. The wrapping machine usually includes an endless track positioned about an object to be wrapped and the shuttle travels on the endless track, dispensing the web as it goes. The rate at which web is dispensed varies as the shuttle progresses around the track and is dependent upon the shape of the track and the shape of the object to be wrapped. The web tensioning device attempts to maintain a constant tension in the web and includes a pair of rollers covered with resilient material. The rollers are urged together to form a nip with the resilient covering of the rollers compressed in the nip. The web is fed between the nip of the rollers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.