Patents by Inventor Darrel C. Christian

Darrel C. Christian 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 marking tube to header joint in a vehicle radiator
    Patent number: 5423112
    Abstract: A method of manufacturing a vehicle radiator including joining the liquid conducting tubes to the tank headers by punching holes with upstanding collars in the headers and inserting a tube end in each collar, each collar to tubing joint being formed by welding an intermediate portion of the joint and filling the rest with solder thereby forming a composite joint of weld and solder with additional solder forming a fillet behind the weld.
    Type: Grant
    Filed: June 13, 1991
    Date of Patent: June 13, 1995
    Assignee: Valeo Engine Cooling, Incorporated
    Inventors: Kevin C. Murphy, Darrel C. Christian, Jeffrey M. Bentley
  • Vehicle radiator with tube to header joint formed of a composite weld and solder bond
    Patent number: 5036913
    Abstract: A vehicle radiator and method of manufacture comprising joining the liquid conducting tubes to the tank headers by punching holes with upstanding collars in the headers and inserting a tube end in each collar, each collar to tubing joint being formed by welding an intermediate portion of the joint and filling the rest with solder thereby forming a composite joint of weld and solder with additional solder forming a fillet behind the weld.
    Type: Grant
    Filed: November 5, 1990
    Date of Patent: August 6, 1991
    Assignee: Valeo Engine Cooling, Incorporated
    Inventors: Kevin C. Murphy, Darrel C. Christian, Jeffrey M. Bentley