Patents by Inventor Dietrich Oelhschlagel

Dietrich Oelhschlagel 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 jointing copper pipe to aluminum pipe by soldering
    Patent number: 3985280
    Abstract: A method of jointing a copper pipe to an aluminum pipe by soldering, comprising the steps of:Flaring one end of one of said two pipes and applying a solder-cover to at least one end of the other pipe;Coupling each one end of both pipes to each other;Heating each one end of both pipes;Imparting ultrasonic vibrations to the coupled portion while solder is molten at the coupled portion; andCooling said coupled portion.
    Type: Grant
    Filed: June 19, 1975
    Date of Patent: October 12, 1976
    Assignee: Hitachi Cable, Ltd.
    Inventors: Kenkichi Yamaji, Dietrich Oelhschlagel, Hajime Abe