Drive apparatus having a ball screw using ultrasonic motors concentric with its nuts
US5647245A · kind A · utility
22Cited by
3References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 18, 1995 |
| Grant date | Jul 15, 1997 |
| Priority date | — |
| Expiry date | Apr 18, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/18632
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A drive apparatus equipped with a ball screw and a plurality of nuts achieves compact size while maintaining output. The above-mentioned effect is obtained by employing ultrasonic motors, concentric with the nuts and ballscrews, which are flat and able to maintain a high output, for driving the nuts.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.