Device for tightening caps on containers
US5996311A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 10, 1998 |
| Grant date | Dec 7, 1999 |
| Priority date | — |
| Expiry date | Aug 10, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB67B3/2086
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A plurality of containers on which untightened threaded caps are deposited are transported in a circular path synchronously with a cap tightening device for each container. The devices have a substantial vertical reciprocable non-rotatable shaft on which a cylindrical member is rotatable and a cylindrical housing is mounted to and is axially adjustable on the member. A spool of magnetic metal is rotatable on the shaft and is adapted for engaging a cap to turn and tighten it. Magnetizable and magnetized elements are arranged with the housing concentrically to the spool. While being transported the housings of the devices engage a stationary driver which turns the housings consecutively so the spools turn by virtue of magnetic coupling between the magnetic elements and the spool.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.