Web stabilizer
US6352257B1 · kind B1 · utility
12Cited by
9References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 9, 1999 |
| Grant date | Mar 5, 2002 |
| Priority date | — |
| Expiry date | Nov 9, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2701/1932
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
Apparatus for reducing peak tensions and tearing in perforated sheet (40) being drawn along a flow path from a stack (S) into a finishing machine (F) is comprised of a drag unit (22), for retarding motion of the sheet; an assist unit (20) for urging the sheet along the flow path; and, a dancer unit (24) for changing the length of the flow path. The assist unit comprises a pair of constant speed rollers (42, 44) supported by mounting blocks (40). The orientation of the assist unit is changed by rotating the mounting blocks. The roller (30) of the dancer unit is spring biased against the sheet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.