Yarn tube with universal pickup groove
US4371130A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 13, 1981 |
| Grant date | Feb 1, 1983 |
| Priority date | — |
| Expiry date | Jan 13, 2001 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2701/31
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
In a yarn tube having a yarn-supporting surface, a yarn-receiving pickup groove formed in the surface and extending circumferentially at least partially around the tube. The groove, specifically configured to accommodate both right hand and left hand yarn pickup, has a constant varying width along the length thereof, and either two widest sections or a common widest section capable of allowing "dropping in" and orientation of the yarn from both the right and left. Constantly narrowing sections extend outward from the widest section or sections to a common narrowest section or point to insure proper snagging of the yarn, initially received within the wide section or sections, regardless of the direction of rotation of the tube or the thickness of the yarn. The entire groove is of constant depth with the constant varying width insuring an accommodation and proper gripping of the yarn over a wide denier range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.