Expandable core plug
US6416014B2 · kind B2 · utility
3Cited by
14References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 25, 2001 |
| Grant date | Jul 9, 2002 |
| Priority date | — |
| Expiry date | Jan 25, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2402/412
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
An expandable, self-adjusting core plug which will maintain a fit between core plug and an out-of-round web roll core. The present invention accomplishes this by providing a core plug with a number of individual, elongated beveled ribs and a corresponding beveled spindle, both of which cooperatively and axially adjust the thickness of the core plug to meet variations in the inner diameter of the core.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.