Patents by Inventor Walter Allenspach

Walter Allenspach 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).

  • Multi-function metal-working machine
    Patent number: 4030335
    Abstract: A support has spaced ends and a longitudinal passage which extends intermediate these ends. A carriage is mounted for movement in and lengthwise of the passage, and a drive is provided for moving the carriage. At least one first tool holder is provided on the carriage, and a mounting arrangement is located at one or both of the ends for mounting additional tool holders.
    Type: Grant
    Filed: March 13, 1975
    Date of Patent: June 21, 1977
    Inventor: Walter Allenspach
  • Method and apparatus for arcuately bending and rolling an elongated metallic workpiece
    Patent number: 4008595
    Abstract: An elongated workpiece is passed along an arcuate path defined by a pair of end rollers flanking a middle roller. At least one of the rollers is formed with a workpiece-receiving groove having flanks at least one of which has a milling formation for removing ridges that form on a workpiece passing along the arcuate path between the rollers. Thus, these ridges that form inherently on a workpiece that is bent are removed during the bending thereof to prevent the workpiece from jamming in the bending rollers.
    Type: Grant
    Filed: April 7, 1976
    Date of Patent: February 22, 1977
    Inventor: Walter Allenspach