Patents Assigned to Professional Instruments Co.
  • 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