Capping apparatus
US5809742A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Dec 17, 1997 |
| Grant date | Sep 22, 1998 |
| Priority date | — |
| Expiry date | Dec 17, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB67B3/2053
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A capping apparatus includes a capping head 3 which is provided with a rotatable spindle. A plurality of permanent magnets 51 are embedded around the entire outer periphery at the upper end of the spindle, with adjacent permanent magnets 51 presenting magnetic poles of different polarities. An arcuate rotation imparting member 53 is fixedly mounted and includes a plurality of permanent magnets 55 which are disposed along a locus of travel of the permanent magnets 51 on the capping head 3, with adjacent permanent magnets 55 presenting magnetic poles of different polarities. As the capping head 3 moves through a threadable engaging zone C in a direction indicated by an arrow, coaction between the permanent magnets 51 and 55 causes the capping head 3 to rotate clockwise, thereby causing a cap 12 to be threadably engaged with a container 4. The permanent magnets 51 and 55 form together a drive source which is free from a sliding movement, thus preventing a occurrence of abraded powder and avoiding a contamination of the environment of a working area.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.