Air coupling
US4213573A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 7, 1979 |
| Grant date | Jul 22, 1980 |
| Priority date | — |
| Expiry date | Mar 7, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/9029
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A bobbin revolver for winding textile filaments has a rotatable chuck carrier with a plurality of bobbin chucks. The carrier is rotatable on a central shaft to urge the chucks successively towards a friction drive drum which rotates bobbins on the chucks to wind filament packages thereon. A fluid coupling, comprising co-axial, relatively rotable parts having communicating passages therethrough, is provided around the shaft to pass pressure fluid to and/or from devices on the carrier. The fluid coupling is arranged so that there is no relative rotation of its parts during winding of a package, thereby avoiding disturbance of the contact pressure between a package and the friction drum through sliding friction between the coupling parts.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.