Patents by Inventor Terry J. Willems

Terry J. Willems 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).

  • Method and apparatus for testing relative hardness of horizontally displaced surfaces
    Patent number: 11460389
    Abstract: An apparatus and method for testing relative hardness of horizontal concrete surfaces includes a weighted platform with scratching pins on a bottom surface of the platform. The pins are arranged in a trapezoidal arrangement. The apparatus is translated over the surface to determine if the surface has reached the desired level of hardness. If translation of the apparatus results in scratching of the surface, the desired level of hardness has not been reached.
    Type: Grant
    Filed: March 15, 2019
    Date of Patent: October 4, 2022
    Assignee: CONSTRUCTION TECHNOLOGY LABORATORIES, INC.
    Inventor: Terry J. Willems
  • METHOD AND APPARATUS FOR TESTING RELATIVE HARDNESS OF HORIZONTALLY DISPLACED SURFACES
    Publication number: 20190285526
    Abstract: An apparatus and method for testing relative hardness of horizontal concrete surfaces includes a weighted platform with scratching pins on a bottom surface of the platform. The pins are arranged in a trapezoidal arrangement. The apparatus is translated over the surface to determine if the surface has reached the desired level of hardness. If translation of the apparatus results in scratching of the surface, the desired level of hardness has not been reached.
    Type: Application
    Filed: March 15, 2019
    Publication date: September 19, 2019
    Applicant: CTL Group
    Inventor: Terry J. Willems