Roller assemblies for automatically winding and unwinding closures
US5044417A · kind A · utility
43Cited by
7References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 3, 1990 |
| Grant date | Sep 3, 1991 |
| Priority date | — |
| Expiry date | Aug 3, 2010 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE06B9/72
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Roller assemblies having a drum upon which a closure is wound and unwound and wherein a drive mechanism within the drum is meshed with a plurality of elongated ribs extending along the inner surface of the drum and wherein the limiting controls for the drive mechanism include a pair of travelling nuts which are also meshed with the ribs of the drum for mechanically actuating the limiting controls.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.