System and method of connecting multiple safety light curtains
US7329854B2 · kind B2 · utility
5Cited by
7References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 26, 2005 |
| Grant date | Feb 12, 2008 |
| Priority date | — |
| Expiry date | Dec 3, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V8/20
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A light screen safety curtain system including multiple light screens cascaded together to cooperatively protect an area or machine against unwanted intrusion. Such a system includes a plurality of independently operating light screens electrically connected to each other and to a control unit. When any one light screen detects an unwanted intrusion through a guarded opening, a stop or warning signal is generated by that light screen and is transmitted to the control unit. A method of configuring a light screen safety system without the need for an external programming device is provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.