Patents by Inventor Edward L. Landrus

Edward L. Landrus 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).

  • Patent number: 4380312
    Abstract: A tool for applying fasteners to fasten an article to the workpiece. A compressible foot is provided to limit the drive distance of a plunger to position dependent upon the thickness of the article. A drive groove in the tool provides support for the fastener until it is driven into the workpiece. The fastener may be a plastic staple and multiple driving strokes may be used to drive the staple into the workpiece. A retainer activated by the compressible foot may be utilized to prevent the advancement of the next staple to the drive position while multiple drive strokes are being used.
    Type: Grant
    Filed: July 17, 1980
    Date of Patent: April 19, 1983
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Edward L. Landrus