Formation, maintenance and tensioning of a tying loop
US5168686A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 3, 1991 |
| Grant date | Dec 8, 1992 |
| Priority date | — |
| Expiry date | May 3, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65B13/06
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A tying machine for packaging articles in stack form comprises a band guide (12) limiting the extension of the loop and having a sliding surface (16). During the advance and after the end position has been reached, a winding band (18) is maintained by pneumatic means in a loop form determined essentially by the sliding surface (16), during the band pull-back is drawn out of the band guide (12) without the movement of any mechanical parts and is laid round the packaging articles. The band guide (12) with the sliding surface (16) and lateral guides (36, 38) for maintaining the winding band (18) in a loop form has exclusively pneumatic means.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.