Apparatus for threading closures
US4439082A · kind A · utility
3Cited by
6References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 23, 1982 |
| Grant date | Mar 27, 1984 |
| Priority date | — |
| Expiry date | Jul 23, 2002 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21D51/50
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
An apparatus for threading a closure which includes a vertically movable nest for receiving a closure shell and a vertically movable threading tool which includes a cylindrical threading member having threads on the outside thereof which is receivable within the shell and is movable in an orbital path to produce threads on an inside curl that has been previously formed on the closure shell.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.