Doubling machine
US4693069A · kind A · utility
2Cited by
1References
12Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Sep 3, 1986 |
| Grant date | Sep 15, 1987 |
| Priority date | — |
| Expiry date | Sep 3, 2006 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD01H1/16
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A heat-insulating jacket extends around each rotating can of a doubling machine. Half way up the height of the can envelope surface, an extraction line for extracting the air heated by friction as the can rotates extends into the interior between the jacket and the can. The end-face boundaries of the rotating can and/or top and bottom closure members of the jacket are such that the pressures of the air drawn into the jacket are at least substantially equal at the top and at the bottom.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.