Patents by Inventor Friedhelm KIRCHHOFF

Friedhelm KIRCHHOFF 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).

  • Vehicle door check
    Patent number: 10604976
    Abstract: A door check for vehicle doors, e.g. car doors having a door strap for being mounted to the chassis and a retainer for being mounted to the door movably and supporting the door strap relative to the retainer and provides a particular precise control over the door movement if the retainer has a cylinder supporting a piston which is spring loaded against the door strap and if an actuator is configured to augment the pressure in the cylinder upon demand to thereby augment the friction between the piston and the door strap.
    Type: Grant
    Filed: December 11, 2017
    Date of Patent: March 31, 2020
    Assignee: Hella GmbH & Co. KGAA
    Inventor: Friedhelm Kirchhoff
  • VEHICLE DOOR CHECK
    Publication number: 20180100334
    Abstract: A door check for vehicle doors, e.g. car doors having a door strap for being mounted to the chassis and a retainer for being mounted to the door movably and supporting the door strap relative to the retainer and provides a particular precise control over the door movement if the retainer has a cylinder supporting a piston which is spring loaded against the door strap and if an actuator is configured to augment the pressure in the cylinder upon demand to thereby augment the friction between the piston and the door strap.
    Type: Application
    Filed: December 11, 2017
    Publication date: April 12, 2018
    Applicant: HELLA GmbH & Co. KGaA
    Inventor: Friedhelm KIRCHHOFF