Patents by Inventor Donald Pistoor

Donald Pistoor 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: 5586477
    Abstract: A bar stock feeder for feeding bar stock to a multiple spindle lathe is disclosed. The bar stock feeder has several guide tubes, each for holding a piece of stock. The tubes are flooded with hydraulic fluid to provide a film of fluid to support the pieces of stock. Each tube contains a piston for advancing the pieces of stock towards the lathe. The tubes have a pivoting part which allows the operator to separate the tubes for reloading. The pistons are retracted into the pivoting part of the tubes prior to separation such that they are not in the way during reloading.
    Type: Grant
    Filed: November 13, 1995
    Date of Patent: December 24, 1996
    Assignee: Devlieg-Bullard, Inc.
    Inventors: Kirt M. Babuder, Douglas A. Joseph, Donald Pistoor, L. Joseph Stupica
  • Patent number: 4034592
    Abstract: A crimping machine for radially inwardly crimping an end fitting onto a hose by means of a contractible die assembly includes a reciprocable ram. A pusher assembly is mounted on the ram for transmitting ram force to the die assembly. The pusher assembly includes first and second semicircular pusher members, and the pusher members are mounted for axial movement with the ram and for lateral movement relative to the ram. The die assembly includes two disjuncted die sections, one of which is carried on the end of each pusher member by connecting means which permits relative radial movement between the die section and the pusher member. A cam follower on each pusher member follows a cam surface on the machine for moving the pushers laterally outwardly when the die sections are pulled from the socket by the pushers during retraction of the ram.
    Type: Grant
    Filed: March 31, 1976
    Date of Patent: July 12, 1977
    Assignee: The Weatherhead Company
    Inventors: Karl K. Chen, Hiralal V. Patel, Irving G. Frank, Donald Pistoor