Method of forming a ring doffer
US4172342A · kind A · utility
0Cited by
4References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 14, 1977 |
| Grant date | Oct 30, 1979 |
| Priority date | — |
| Expiry date | Dec 14, 1997 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB24B19/02
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A ring doffer is provided for carded web splitting that prevents loading of the card cylinder during operation by employing a circumferential groove therein to effect the web splitting that is cut in a reversing helix pattern at a pitch exceeding the width of the groove.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.