Patents by Inventor Wilhelmus Gerardus Essers

Wilhelmus Gerardus Essers 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
  • Device for plasma-MIG welding
    Patent number: 4087671
    Abstract: A device for plasma-MIG welding comprising a welding torch provided with a non-consumable electrode and a supply of a welding wire, the non-consumable electrode being connected to a first power supply source having a drooping voltage characteristic and the welding wire being connected to a second power supply source having a constant voltage characteristic, the first power supply source being connected in series with the second power supply source, thereby improving the stability of the plasma arc.
    Type: Grant
    Filed: March 1, 1976
    Date of Patent: May 2, 1978
    Assignee: U.S. Philips Corporation
    Inventor: Wilhelmus Gerardus Essers
  • Method of and device for arc welding
    Patent number: 4039800
    Abstract: A method and device for plasma MIG-arc welding in which a MIG-arc is maintained between a welding wire and an auxiliary electrode which is independent of the workpiece; the auxiliary electrode typically being either the nozzle of the welding torch or an individual electrode between the nozzle and the workpiece.
    Type: Grant
    Filed: March 19, 1975
    Date of Patent: August 2, 1977
    Assignee: U.S. Philips Corporation
    Inventor: Wilhelmus Gerardus Essers
  • 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