Solar powered indicating device for sewing machines
US4763589A · kind A · utility
4Cited by
3References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 13, 1987 |
| Grant date | Aug 16, 1988 |
| Priority date | — |
| Expiry date | Oct 13, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S323/906
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A solar cell powered detecting and indicating system applicable to mechanically controlled sewing machines without D.C. power supplies connected to regular A.C. house mains, and detecting and indicating circuits minimizing power consumption for compatability with solar generated power supply.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.