Patents by Inventor Donald Bornhorst

Donald Bornhorst 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).

  • Method and apparatus for eliminating free clearances in a press shutheight adjustment mechanism
    Patent number: 6715409
    Abstract: An apparatus for use in a press machine eliminates the free clearances present between the threaded portions of a screw and adjustment nut assembled in a shutheight adjustment mechanism. A hydraulic assembly directs a pressurized fluid against an outer periphery of the adjustment nut to effectively compress the adjustment nut and cause its threaded portion to be displaced into interlocking engagement with the threaded portion of the screw. Alternatively, the hydraulic assembly may be arranged to hydraulically pressurize an interior space of the screw to effectively expand the screw and cause its threaded portion to be displaced into interlocking engagement with the threaded portion of the adjustment nut.
    Type: Grant
    Filed: May 22, 2002
    Date of Patent: April 6, 2004
    Assignee: The Minster Machine Company
    Inventors: W. Craig Brewer, Bradley Burns, Robert Schockman, Bryan Pax, Donald Bornhorst
  • Method and apparatus for eliminating free clearances in a press shutheight adjustment mechanism
    Publication number: 20030217651
    Abstract: An apparatus for use in a press machine eliminates the free clearances present between the threaded portions of a screw and adjustment nut assembled in a shutheight adjustment mechanism. A hydraulic assembly directs a pressurized fluid against an outer periphery of the adjustment nut to effectively compress the adjustment nut and cause its threaded portion to be displaced into interlocking engagement with the threaded portion of the screw. Alternatively, the hydraulic assembly may be arranged to hydraulically pressurize an interior space of the screw to effectively expand the screw and cause its threaded portion to be displaced into interlocking engagement with the threaded portion of the adjustment nut.
    Type: Application
    Filed: May 22, 2002
    Publication date: November 27, 2003
    Inventors: W. Craig Brewer, Bradley Burns, Robert Schockman, Bryan Pax, Donald Bornhorst