Patents by Inventor Helmut Hofl

Helmut Hofl 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).

  • Scavenger hood for laser
    Patent number: 4149062
    Abstract: Laser beam scribing apparatus having a nozzle assembly in which a partition defines a travel path for the laser beam and separates the travel path from a surrounding suction chamber. The suction chamber terminates in a suction aperture coplanar with and surrounding the laser beam exit aperture. In operation, application of a vacuum source to the suction chamber causes foreign particles to enter solely into the suction chamber thereby preventing such particles interfering with the focus or intensity of the laser beam.
    Type: Grant
    Filed: September 9, 1977
    Date of Patent: April 10, 1979
    Assignee: Texas Instruments Deutschland GmbH
    Inventors: Ernst Limmer, Helmut Hofl