Patents by Inventor Theodore C. Esterline

Theodore C. Esterline 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).

  • Work holding device
    Patent number: 4022156
    Abstract: A work holder comprising a fixed frame, a movable supported frame supported on upwardly movable columns urged upwardly by springs and a work holder frame hinged to the movable support and hydraulic cylinder connected to the fixed frame and to the work support frame so that when the hydraulic cylinder extends, the springs first move the work support and the work holder frame up together away from the fixed frame and then the hydraulic cylinder causes the work holder frame to swing upwardly away from the support frame.
    Type: Grant
    Filed: September 17, 1975
    Date of Patent: May 10, 1977
    Assignee: Mafix, Inc.
    Inventor: Theodore C. Esterline