Multi-colored industrial signal device
US6626557B1 · kind B1 · utility
83Cited by
48References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 29, 1999 |
| Grant date | Sep 30, 2003 |
| Priority date | — |
| Expiry date | Dec 29, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S362/80
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An industrial signaling device having a single module with the capability of emitting different colored lights to indicate the operating condition of a machine. The emitted light can be steady or flashing, and controlled by an external PLC or an onboard microprocessor. The PLC or microprocessor interprets incoming information and causes the color of the light or its flashing pattern to change accordingly. The light source maybe an LED, ionizable gas or flourescent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.