Patents by Inventor Eugene L. Dahl

Eugene L. Dahl 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 of manufacturing an annular slit restrictor using a shrink fit operation
    Patent number: 5287613
    Abstract: This device relates to a pneumatic control system and more particularly to an annular slit restrictor in connection therewith and a method for precisely centering an annular plug within an accurately formed annular hole in a flow control body in a shrink fit operation to cause the plug and hole to be co-axial.
    Type: Grant
    Filed: May 8, 1992
    Date of Patent: February 22, 1994
    Assignee: Professional Instruments Co.
    Inventor: Eugene L. Dahl