Web tensioning device with plural control inputs
US7438251B2 · kind B2 · utility
5Cited by
10References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 19, 2003 |
| Grant date | Oct 21, 2008 |
| Priority date | — |
| Expiry date | Oct 21, 2025 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2555/24
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A web tensioning device utilizes a dancer arm which can be positioned by a controlled servo motor. In a preferred embodiment, the controller for the servo motor receives an input signal based on the acceleration (positive or negative) of the dancer arm and implements a torque component necessary to maintain predetermined web tension, for example, an applied torque component that changes the position of the dancer arm. The controller may also receive additional input signals indicative of the acceleration of the web itself.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.