Method and apparatus for guiding a flexible tube between annular and flattened cross section
US4314462A · kind A · utility
10Cited by
5References
19Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Jan 25, 1979 |
| Grant date | Feb 9, 1982 |
| Priority date | — |
| Expiry date | Jan 25, 1999 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD04B15/88
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A tube of flexible material moving longitudinally undergoes transition between annular cross section and flattened straight cross section, without change in the length of perimeter of its cross sections, by one stage of changing between the annular cross section and a rectangular cross section, and another stage of changing between that rectangular cross section and the flattened cross section through successively longer and narrower rectangular cross sections. The method is applicable to material produced by a circular knitting machine. Preferably there is a polyhedral guide within the tube.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.