Patents by Inventor John R. Dahlstrom

John R. Dahlstrom 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).

  • Gauging system for vehicle alignment equipment
    Patent number: 4922623
    Abstract: An improved measuring system for use in combination with vehicle repair equipment includes a pair of transverse bars mounted at a fixed position in space relative to the vehicle with a longitudinally extending and laterally movable bar assembly attached by sliding brackets to the transverse bars. Additional longitudinal bars are attached to the opposite ends of the transverse bars. Supplemental measuring equipment is attachable to all of the bars in order to effect point to point measurements on a vehicle in order that the point to point measurements may be compared with known standards.
    Type: Grant
    Filed: December 21, 1987
    Date of Patent: May 8, 1990
    Assignee: Chief Automotive Systems, Inc.
    Inventors: Roger B. Aldrich, John R. Dahlstrom
  • Gauging system for vehicle alignment equipment
    Patent number: 4731936
    Abstract: An improved measuring system for use in combination with vehicle repair equipment includes a pair of transverse bars mounted at a fixed position in space relative to the vehicle with a longitudinally extending and laterally movable bar assembly attached by sliding brackets to the transverse bars. Additional longitudinal bars are attached to the opposite ends of the transverse bars. Supplemental measuring equipment is attachable to all of the bars in order to effect point to point measurements on a vehicle in order that the point to point measurements may be compared with known standards.
    Type: Grant
    Filed: October 16, 1985
    Date of Patent: March 22, 1988
    Assignee: Chief Automotive Systems, Inc.
    Inventors: Roger B. Aldrich, John R. Dahlstrom