Patents by Inventor Gerrit Willem Tichelaar

Gerrit Willem Tichelaar 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).

  • Device and welding torch for plasma-mig-welding
    Patent number: 4122328
    Abstract: A compact plasma-MIG welding torch in which the contact tube and the nozzle are directly connected together electrically, thereby enabling welding with a very short extension of the welding wire.
    Type: Grant
    Filed: March 17, 1977
    Date of Patent: October 24, 1978
    Assignee: U.S. Philips Corporation
    Inventors: Wilhelmus Gerardus Essers, Gerardus Jelmorini, Gerrit Willem Tichelaar
  • Method of and apparatus for arc welding
    Patent number: 4016397
    Abstract: Method of arc welding in which an electric arc is maintained between a welding wire and a workpiece in a thermally ionized gas which is produced by an electric arc maintained between the workpiece and the inner surface of a nozzle which acts as a non-consumable electrode as a substitute for a separate tungsten electrode.
    Type: Grant
    Filed: July 1, 1975
    Date of Patent: April 5, 1977
    Assignee: U.S. Philips Corporation
    Inventors: Wilhelmus Gerardus Essers, Gerrit Willem Tichelaar