Method and apparatus for precisely driving film material
US5344058A · kind A · utility
10Cited by
12References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 29, 1993 |
| Grant date | Sep 6, 1994 |
| Priority date | — |
| Expiry date | Jun 29, 2013 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2511/224
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A method and apparatus for precisely advancing film material between two rollers includes a driven roller having a medium hardness rubber surface and a non-driven hard surfaced roller which contacts precision surfaces at either end of the driven roller to accurately control the spacing between the two rollers. The non-driven roller is urged against the driven roller precision surfaces by a spring force, and causes the rubber of the driven roller to compress when film material is in an operative position between the roller pair.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.