Patents by Inventor Dennis LOEPPEN

Dennis LOEPPEN 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).

  • Patent number: 11921313
    Abstract: The present disclosure relates to a function display for selectively displaying symbols representing switching states for a motor vehicle including a light guide stack of at least two transparent or translucent, planar light guides arranged in an overlaid manner in a stacking direction, which are spaced apart by a transparent or translucent layer including a material that is optically thinner compared to the adjacent light guides so that the light guides have a main surface facing towards an observer and a main surface facing away from the observer that faces towards a light guide which is most closely adjacent in stacking direction; at least one light source per light guide arranged to couple light into the respective light guide via an end face; wherein one light-refractive and/or light-scattering microstructured portion per light guide, which is provided in or on the light guide, is provided for generating a symbol display.
    Type: Grant
    Filed: September 29, 2022
    Date of Patent: March 5, 2024
    Assignee: PREH GMBH
    Inventors: Dennis Loeppen, Björn Morber, Kilian Memmel
  • Publication number: 20230347963
    Abstract: The present disclosure relates to an operating member including a support; an actuating part, which has an actuating surface facing towards an operator, and the actuating part has an edge region, which is provided outside the actuating surface and via which the actuating part is supported on the support; wherein the actuating part has a layer structure, defining the actuating surface, and the layer structure has at least two layers that differ in the modulus of elasticity; wherein, in a transitional region between the edge region and the actuating surface, a layer with the smallest modulus of elasticity is a highly elastic layer, and has the greatest layer thickness compared to other layers of the layer structure, in order to provide an elastic compliance of the actuating part; a force sensor disposed between the support and the actuating part detects a displacement of the actuating part.
    Type: Application
    Filed: July 28, 2021
    Publication date: November 2, 2023
    Applicant: Preh GmbH
    Inventors: Dennis LOEPPEN, Frank DANGEL, Tobias BODENSTEIN, Peter LOCHNER, Jochen SCHUHMANN
  • Publication number: 20230194767
    Abstract: The present disclosure relates to a function display for selectively displaying symbols representing switching states for a motor vehicle including a light guide stack of at least two transparent or translucent, planar light guides arranged in an overlaid manner in a stacking direction, which are spaced apart by a transparent or translucent layer including a material that is optically thinner compared to the adjacent light guides so that the light guides have a main surface facing towards an observer and a main surface facing away from the observer that faces towards a light guide which is most closely adjacent in stacking direction; at least one light source per light guide arranged to couple light into the respective light guide via an end face; wherein one light-refractive and/or light-scattering microstructured portion per light guide, which is provided in or on the light guide, is provided for generating a symbol display.
    Type: Application
    Filed: September 29, 2022
    Publication date: June 22, 2023
    Applicant: Preh GmbH
    Inventors: Dennis LOEPPEN, Björn MORBER, Kilian MEMMEL