Individual-motor drive method of and apparatus for spindles of a spinning machine
US4817371A · kind A · utility
7Cited by
9References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 11, 1987 |
| Grant date | Apr 4, 1989 |
| Priority date | — |
| Expiry date | Jun 11, 2007 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD01H1/244
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
To decrease the time required for spindles of a spinning machine to reach their normal operating speeds after a yarn breakage or the like, where the spindles are individually driven by respective asynchronous motors individual to the spindles, the alternating current source whose frequency defines the speed of the motor is temporarily brought to a voltage above the normal operating voltage and the voltage step-up is then terminated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.