Flexible straw and system and method of manufacturing the same
US10524599B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 9, 2019 |
| Grant date | Jan 7, 2020 |
| Priority date | — |
| Expiry date | Apr 9, 2039 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB31F1/205
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A corrugating machine for forming a flexible paper drinking straw by forming annular corrugations in a tube, including a plurality of corrugating elements and means for moving the tube against the corrugating elements. Each of the corrugating elements is spaced apart from each other in both a lateral direction and a forward direction. The corrugating machine includes an assembly spool and a drum mounted to a side of the assembly spool for rotation about a common axis. A mandrel is mounted to the drum for reciprocation into and out of the spool assembly, to carry the tube against the corrugating elements mounted in an arc defined about the common axis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.