Patents by Inventor Elmar Tschegg

Elmar Tschegg 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).

  • Patent number: 5496130
    Abstract: A method of surface treating workpieces formed of cement, bituminous or other bonding materials to be coated with a cover layer, such as roads, airport and bridge surfaces, and the like, including the steps of roughening the surface to be coated and then cleaning the surface before applying the cover layer, where the roughness depth (RT) corresponds to one-half of the diameter of the largest grain (1) of the surface to be coated or of the cover layer and the width of the undulations of the surface to be coated correspond to the diameter of the largest grain. The undulations can be formed along a single axis or along two axes.
    Type: Grant
    Filed: July 13, 1994
    Date of Patent: March 5, 1996
    Assignee: Hilti Aktiengesellschaft
    Inventor: Elmar Tschegg
  • Patent number: 4304123
    Abstract: The invention relates to a micro hardness tester (durometer) having a penetration body such as a point or the like penetrating into a sample under load. An electrical means is provided for loading the penetration body and the bearing force of the penetration body is convertible into electrical signals for the purpose of measuring said force. The invention is characterized in that the penetration body is fixed to an arm or spring arranged on a mounting element which spring or arm also carries at least one strain gauge or a micro dynamometer cell for measuring the bearing force of the penetration body.
    Type: Grant
    Filed: January 16, 1980
    Date of Patent: December 8, 1981
    Inventors: Hubert Aschinger, Ekkehard Kubasta, Alfred Wagendristel, Herwig Bangert, Elmar Tschegg