Re-usable yarn winding tube having removable end caps
US6073868A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 24, 1998 |
| Grant date | Jun 13, 2000 |
| Priority date | — |
| Expiry date | Feb 24, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2701/31
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A re-usable yarn carrier to be mounted on a winding machine and to have yarn wound on and unwound therefrom is provided. The yarn carrier includes a hollow cylindrical tube which is preferably made of a plastic material. Each end of the tube is provided with a channel. The transition between the outside surface of the tube and the channel is formed by a shoulder. A resilient ring is positioned within each channel. The resilient ring is engaged by the base surface of the channel and forms an engagement surface adjacent to the shoulder on the tube. Further, the end of the ring positioned proximal to the end of the tube forms a protective edge. Thus, if the tube is dropped, the ring takes the brunt of the force rather than the tube material itself. The formation of the ring within the channel within the tube forms a yarn winding engagement surface. In addition, the resilient rings may be provided in various colors and forms so as to provide identification for the type of yarn on the tube.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.