Hinged bag top folder
US4507906A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 27, 1982 |
| Grant date | Apr 2, 1985 |
| Priority date | — |
| Expiry date | Sep 27, 2002 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65B7/08
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
In a packaging machine, a folder assembly for folding the tops of bags as part of a ceiling operation wherein the folder assembly can accommodate irregularities in the bags without jamming. A first folding station includes a stationary support member to which is hingedly affixed a first and a second folder plate, each having predetermined profiles formed along a working edge thereof. These folder plates are resiliently biased by springs toward their associated support member such that limited freedom to yield in a vertical plane is achieved. Associated with the working edge and spaced slightly therefrom is a front fold blade which, too, is spring mounted to allow a limited yield in a horizontal plane. In the event a jam should occur, the assembly may be readily opened to facilitate the clearing of that jam.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.