Method and apparatus for threading closures
US4399679A · kind A · utility
10Cited by
6References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 2, 1981 |
| Grant date | Aug 23, 1983 |
| Priority date | — |
| Expiry date | Nov 2, 2001 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21D51/50
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
An apparatus for forming a thread about the sidewall of a closure is disclosed. The apparatus features a nest for holding the closure and a circular tool fittable within the closure while it is in the nest. The nest and the circular tool have cooperating die means so that when the circular tool achieves planetary motion the die means coact one with the other to form a thread on the closure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.