Method and apparatus for making a continuous tube of flexible sheet material
US5232429A · kind A · utility
20Cited by
9References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 6, 1992 |
| Grant date | Aug 3, 1993 |
| Priority date | — |
| Expiry date | Feb 6, 2012 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06H5/00
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Method and apparatus for making tubes from flexible textile sheets by which a sheet is helically wound around two or more non-rotatable support bars. Feed rollers contacting two or more helical convolutions wind the sheet so that adjacent helical convolutions overlap and also maintain the tube upstream of the feed rollers in tension to progress the tube axially along the support bars. As the sheet is wound into helical form, successive helical convolutions are sewn together to form a continuous tube.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.