Coaxial extruder drive
US6632009B2 · kind B2 · utility
5Cited by
2References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 6, 2001 |
| Grant date | Oct 14, 2003 |
| Priority date | — |
| Expiry date | Aug 6, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C48/03
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An extruder has a housing and a screw rotatable in the extruder housing about an axis. A drive has a drive housing fixed to the extruder housing, an extension fixed directly to the screw and extending along the axis into the drive housing, and a sleeve-shaped rotor centered on the axis in the drive housing and coaxially surrounding the screw extension. Structure rotation-ally fixes the rotor directly to the screw extension. A sleeve-shaped stator centered on the axis and fixed in the drive housing coaxially surrounds the rotor. The stator and rotor together form a motor that can rotate the screw about the axis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.