Integrated rotary drive apparatus
US5450770A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 9, 1993 |
| Grant date | Sep 19, 1995 |
| Priority date | — |
| Expiry date | Apr 9, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K7/02
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An integrated rotary drive apparatus for driving an element to be rotated in a controlled manner, comprises; a coupling shaft coupled to the element to be rotated, a drive shaft having a hollow portion within which the coupling shaft engages, a shaftless DC motor armature coupled to the coupling shaft for directly driving the coupling shaft, and a flywheel and rotary encoder disk coupled to the drive shaft to rotate therewith. The integrated rotary drive further includes a first enclosure section, for mounting to a non-rotating frame member for supporting the integrated rotary drive, and a second enclosure section mounted to the first enclosure section, for supporting a non-rotating optical encoder reader in proximity to the rotary encoder disk for providing a feedback signal, and for supporting a non-rotating DC motor stator in proximity to the DC motor armature for driving the DC motor armature when a DC current is applied to the stator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.