Patents Represented by Attorney Doulgas L. Weller

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  • Safety device for controlling a light signal generator based on fiber position
    Patent number: 4598199
    Abstract: A safety device for a light signal generator only activates a laser beam emerging from an optical fiber connector when an optical fiber is connected. By inserting a plug of the optical fiber into the connector of the light signal generator a photodetecting circuit is caused to provide a control signal, which activates the laser.
    Type: Grant
    Filed: November 3, 1983
    Date of Patent: July 1, 1986
    Assignee: Hewlett-Packard Company
    Inventors: Christian Hentschel, Wolfgang Schmid