Application heads for applying closures to containers
US4558554A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 26, 1983 |
| Grant date | Dec 17, 1985 |
| Priority date | — |
| Expiry date | Oct 26, 2003 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB67B3/2073
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A rotary application head for applying a screw-threaded closure to a container includes a collet 26 for gripping the closure, the collet being secured to a drive member 31 having an external flange 36 disposed between a thrust bearing 37 supported by the main body 10 and a friction clutch plate 38 backed by a pressure plate 40 which is driven by the body through pins 42. A piston 17 disposed in a pneumatic cylinder 16 in the body acts through push rods 19 to apply a predetermined axial loading between the pressure plate 40, friction clutch plate 30 and the flange 36. When the closure reaches a predetermined tightness, the reaction torque causes the collet and drive member to slip relative to the pressure plate and body, preventing over-tightening of the closure. External axial forces applied to the collet cause the piston 17 to be displaced axially to compensate for these forces without altering the torque at which slipping occurs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.