Sewing machine control device
US4915045A · kind A · utility
1Cited by
8References
8Claims
0Family size
Inventor
Key dates
| Filing date | Sep 5, 1986 |
| Grant date | Apr 10, 1990 |
| Priority date | — |
| Expiry date | Sep 5, 2006 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD05B69/18
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A sewing machine control device equipped with an operating switch (10) for instructing the sewing machine to operate and stop by turning on and off the operating switch (10) and a counter (9) for accumulating the duration of a running signal (SRT) produced while the operating switch is in an on state, so that the actual accumulated (total) operating time during which the sewing machine is actually operated can be obtained accurately from the accumulated (total) duration of the running signal (SRT).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.