Dynamic differential drive
US4964322A · kind A · utility
1Cited by
1References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 3, 1987 |
| Grant date | Oct 23, 1990 |
| Priority date | — |
| Expiry date | Sep 3, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T82/2529
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A differential drive for rotation of a central shaft correspoding in contrast to a conventional axially displaced drawbar. The invention employs a harmonic drive gear arrangement having a stationary axle and a servo motor driven rotary axle to produce zero differential out of the radial spline when the servo driven axle is stationary. Servo controllled displacement occurs through rotation of the servo driven axle with a substantial reduction with respect to rotation of the stationary axle, e.g., in the order of 97:1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.