Patents by Inventor Mark A. Heitfeld

Mark A. Heitfeld 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).

  • Apparatus, system and method for fastening a screen on a gyratory sifter
    Patent number: 11285514
    Abstract: An apparatus, system and method for fastening a screen has a screen with apertures sized to separate a first sized material from a second sized material. A box is positioned beneath the screen in a bracket extending along the screen. A protrusion extends from the box toward the screen. A triangular tensioning element secured along a length of the screen moves in a direction substantially perpendicular to the length of the screen in response to contact with the protrusion to seal the screen against the bracket and tension the screen.
    Type: Grant
    Filed: May 3, 2016
    Date of Patent: March 29, 2022
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Mark A. Heitfeld, Christopher T. Meranda
  • APPARATUS, SYSTEM AND METHOD FOR FASTENING A SCREEN ON A GYRATORY SIFTER
    Publication number: 20210268546
    Abstract: An apparatus, system and method for fastening a screen has a screen with apertures sized to separate a first sized material from a second sized material. A box is positioned beneath the screen in a bracket extending along the screen. A protrusion extends from the box toward the screen. A triangular tensioning element secured along a length of the screen moves in a direction substantially perpendicular to the length of the screen in response to contact with the protrusion to seal the screen against the bracket and tension the screen.
    Type: Application
    Filed: May 3, 2016
    Publication date: September 2, 2021
    Applicant: M-I LLC
    Inventors: Mark A. Heitfeld, Christopher T. Meranda