Patents by Inventor Ernst Geiger

Ernst Geiger 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).

  • Roughening device
    Patent number: 6702660
    Abstract: One embodiment of a roughening device comprises a hub, a body having a wall defining a cavity, and an elastomeric material within the cavity. A plurality of cutting elements extend through holes in the wall of the body such that a base of each cutting element is positioned against the elastomeric material.
    Type: Grant
    Filed: March 14, 2002
    Date of Patent: March 9, 2004
    Inventors: William P. Gundy, Ernst Geiger
  • Method of manufacturing corrosion-resistant welding electrodes made of tungsten or a tungsten alloy
    Publication number: 20030234064
    Abstract: Corrosion-resistant welding electrodes made of tungsten or a tungsten alloy are produced. Prefabricated welding electrodes are heat treated at temperatures of between 300° C. and 500° C. in an oxidizing atmosphere. This results in the formation of oxide layers on the surface of the welding electrodes; these layers have good electrical conductivity and prevent the formation of unwanted corrosion layers with poor conductivity. Welding electrodes produced in this way demonstrate outstanding spark ignition and problem-free erosion.
    Type: Application
    Filed: March 17, 2003
    Publication date: December 25, 2003
    Inventors: Arno Schintlmeister, Joachim Resch, Ernst Geiger
  • Roughening device
    Publication number: 20020160705
    Abstract: One embodiment of a roughening device comprises a hub, a body having a wall defining a cavity, and an elastomeric material within the cavity. A plurality of cutting elements extend through holes in the wall of the body such that a base of each cutting element is positioned against the elastomeric material.
    Type: Application
    Filed: March 14, 2002
    Publication date: October 31, 2002
    Applicant: William P. Gundy
    Inventors: William P. Gundy, Ernst Geiger
  • Hole roughening device and method
    Patent number: 6398634
    Abstract: The present invention comprises a drilling tool for attachment to conventional drilling means, which roughens the internal surface of a pre-drilled hole to enhance attachment of an anchoring device and adhesive placed therein. The roughening device has a shaft for attaching to a conventional drilling device at one end and a tubular side wall bearing cutters/abraders at the other. There is a void between the shaft and the side wall which is filled by an elastomeric material which cushions the action of the cutters/abraders.
    Type: Grant
    Filed: September 8, 2000
    Date of Patent: June 4, 2002
    Inventors: William P. Gundy, Ernst Geiger