Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Dean C. Erickson0
Gregory B. Ingersoll0
Frank L. Clifton0
Date of Patent
February 12, 2008
0Patent Application Number
112360030
Date Filed
September 26, 2005
0Patent Primary Examiner
Patent 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.
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