Closure pre-tightener for closure applicating machines
US4308707A · kind A · utility
9Cited by
7References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 3, 1979 |
| Grant date | Jan 5, 1982 |
| Priority date | — |
| Expiry date | Dec 3, 1999 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB67B3/2033
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
This invention provides a pre-tightening mechanism for effecting the initial application of a threaded closure on a threaded bottle neck. The pre-tightening mechanism includes a friction rail for effecting a turning movement of the closure relative to the bottle neck and a spring biased cap hold-down plate which maintains a substantially constant pressure on the closure and maintains the closure panel horizontal during the pre-tightening operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.