Patents by Inventor Ewald Hartwich

Ewald Hartwich 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).

  • Metal sheet with contour cut for vibration reduction
    Patent number: 10953451
    Abstract: A metal sheet with attachment points for attaching the metal sheet to a support structure has a contour cut introduced in a sheet surface of the metal sheet, wherein the contour cut extends transversely to a connection line extending between a first and a second one of the attachment points. The contour cut is positioned relative to the first attachment point such that a vibration line extending as far as the first attachment point when the contour cut is not present is interrupted by the contour cut.
    Type: Grant
    Filed: February 21, 2019
    Date of Patent: March 23, 2021
    Assignee: Friedrich Graepel AG
    Inventors: Ewald Hartwich, Marc Bartke, Normann Willimek
  • Metal Sheet with Contour Cut for Vibration Reduction
    Publication number: 20200269304
    Abstract: A metal sheet with attachment points for attaching the metal sheet to a support structure has a contour cut introduced in a sheet surface of the metal sheet, wherein the contour cut extends transversely to a connection line extending between a first and a second one of the attachment points. The contour cut is positioned relative to the first attachment point such that a vibration line extending as far as the first attachment point when the contour cut is not present is interrupted by the contour cut.
    Type: Application
    Filed: February 21, 2019
    Publication date: August 27, 2020
    Inventors: Ewald Hartwich, Marc Bartke, Normann Willimek