Patents by Inventor Wesley C. Leedahl

Wesley C. Leedahl 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).

  • Refrigeration apparatus and method of making same
    Patent number: 4574610
    Abstract: A method of securing a tube, such as a condenser tube for a refrigeration cabinet, to the inside of the outer walls of the cabinet by means of direct welding between the tube and the oil panel of the cabinet. The tubing is formed to the desired configuration and a plurality of projections are formed on the tube for welding to the surface by a crimping action which indents the sidewalls of the tube at each weld location to produce a projection beyond the normal tubing wall while the rest of the tubing remains undeformed. Subsequently, the configuration of tubing is placed on the sheet and resistance-welded under conditions to produce a relatively light weld adhesion with a small weld nugget that does not create any significant discoloration or distortion on the other side of the sheet which becomes the finished exterior surface of the cabinet.
    Type: Grant
    Filed: August 17, 1984
    Date of Patent: March 11, 1986
    Assignee: White Consolidated Industries, Inc.
    Inventors: Warren L. Hull, Wesley C. Leedahl, Donald R. Notch
  • Refrigeration apparatus and method of making same
    Patent number: 4489470
    Abstract: A method of securing a tube, such as a condenser tube for a refrigeration cabinet, to the inside of the outer walls of the cabinet by means of direct welding between the tube and the oil panel of the cabinet. The tubing is formed to the desired configuration and a plurality of projections are formed on the tube for welding to the surface by a crimping action which indents the sidewalls of the tube at each weld location to produce a projection beyond the normal tubing wall while the rest of the tubing remains undeformed. Subsequently, the configuration of tubing is placed on the sheet and resistance-welded under conditions to produce a relatively light weld adhesion with a small weld nugget that does not create any significant discoloration or distortion on the other side of the sheet which becomes the finished exterior surface of the cabinet.
    Type: Grant
    Filed: January 26, 1982
    Date of Patent: December 25, 1984
    Assignee: White Consolidated Industries, Inc.
    Inventors: Warren L. Hull, Wesley C. Leedahl, Donald R. Notch