Patents by Inventor Dean C. Erickson

Dean C. Erickson has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • System and method of connecting multiple safety light curtains
    Patent number: 7329854
    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.
    Type: Grant
    Filed: September 26, 2005
    Date of Patent: February 12, 2008
    Assignee: Banner Engineering Corporation
    Inventors: Frank L. Clifton, Dean C. Erickson, Gregory B. Ingersoll