Patents by Inventor Josef ZAK

Josef ZAK 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 for measuring shear properties of asphalt mixtures
    Patent number: 10386280
    Abstract: A device for measuring shear properties of asphalt mixtures includes a machine for testing the material strength, equipped with an operational frame, fixing elements and driving mechanism, the machine including a steel socket equipped at at least one of a bottom and a top edge thereof with an inner flange to accommodate a testing specimen, the testing specimen having a central open hole, and a steel insert adapted to be inserted into the open hole in the testing specimen, the steel insert being equipped with a rim at at least one of an end thereof at the top edge of the steel socket and at end thereof at the bottom of the steel socket, while a size of a clearance between the inner flange and the rim being between 5 to 60 mm, and the steel insert being equipped with elements for fixing to clamping elements of the device, and measuring probes being connected to the steel insert.
    Type: Grant
    Filed: June 21, 2016
    Date of Patent: August 20, 2019
    Assignees: CZECH TECHNICAL UNIVERSITY IN PRAGUE, FACULTY OF CIVIL ENGINEERING, DEPARTMENT OF ROAD STRUCTURES, THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
    Inventors: Josef Zak, John Harvey, James Signore
  • DEVICE FOR MEASURING SHEAR PROPERTIES OF ASPHALT MIXTURES
    Publication number: 20180202911
    Abstract: A device for measuring shear properties of asphalt mixtures includes a machine for testing the material strength, equipped with an operational frame, fixing elements and driving mechanism, the machine including a steel socket equipped at at least one of a bottom and a top edge thereof with an inner flange to accommodate a testing specimen, the testing specimen having a central open hole, and a steel insert adapted to be inserted into the open hole in the testing specimen, the steel insert being equipped with a rim at at least one of an end thereof at the top edge of the steel socket and at end thereof at the bottom of the steel socket, while a size of a clearance between the inner flange and the rim being between 5 to 60 mm, and the steel insert being equipped with elements for fixing to clamping elements of the device, and measuring probes being connected to the steel insert.
    Type: Application
    Filed: June 21, 2016
    Publication date: July 19, 2018
    Applicants: CZECH TECHNICAL UNIVERSITY IN PRAGUE, FACULTY OF CIVIL ENGINEERING, THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
    Inventors: Josef ZAK, Jonh HARVEY, James SIGNORE