Ramp speed integrated motor controller for sewing machines
US4185575A · kind A · utility
14Cited by
4References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 28, 1979 |
| Grant date | Jan 29, 1980 |
| Priority date | — |
| Expiry date | Feb 28, 1999 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD05B69/18
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A fixed speed sewing machine is disclosed having only start and stop control capability for the actual running of the machine. An arrangement is provided for controlling the acceleration of the sewing machine drive motor so that it is gradual, rather than abrupt.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.