Patents by Inventor Hubert Wittmann

Hubert Wittmann 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).

  • Publication number: 20200398708
    Abstract: The invention relates to a vehicle seat having a roller guide which has at least one guide rail which is at least partially sideways open and at least one running roller rolling in the guide rail, connected to parts of the vehicle seat via an axle member, wherein a running surface of the running roller is rollable along a roller-underside inner wall of the guide rail arranged parallel or at an angle to a middle axle of the running roller, wherein the running roller comprises at least a first area and a second area, wherein the first area forms at least a part of the running surface and the second area is arranged in a radial direction of the running roller at least partially between the axle member and the first area and in contact with both. According to the invention, an electrical conductivity of the first area is lower than an electrical conductivity of the second area.
    Type: Application
    Filed: June 17, 2020
    Publication date: December 24, 2020
    Applicant: GRAMMER AG
    Inventor: Hubert WITTMANN
  • Publication number: 20200391632
    Abstract: The invention relates to a method for monitoring a state of wear of a damping device within a system. The system includes a vehicle seat having a first portion which is movably mounted in at least one direction with respect to a second portion, a damping device for damping oscillations is arranged between the first portion and the second portion, and a first sensor that determines an instantaneous relative position of the first portion with respect to the second portion. A displacement function in relation to the relative position of the first portion with respect to the second portion is defined as a function of time, and a current value of the displacement function is determined at selected intervals and summed. The sum is compared with a predetermined first limit.
    Type: Application
    Filed: June 12, 2020
    Publication date: December 17, 2020
    Applicant: GRAMMER AG
    Inventor: Hubert WITTMANN
  • Publication number: 20200238852
    Abstract: The invention relates to a system for seat occupancy detection, comprising a vehicle seat for a driver with an upper part and at least one suspension-damper system, wherein an acceleration sensor is arranged on the upper part and is designed to detect a characteristic of an acceleration of the upper part as a function of a time, an evaluation unit being provided which is designed to generate an evaluation of the characteristic of the acceleration and optionally to transmit a signal to a higher-level control unit, the evaluation unit also being designed to assign the evaluation to one of several states, wherein the states are selected from a group comprising an occupied state and an unoccupied state of the vehicle seat.
    Type: Application
    Filed: January 28, 2020
    Publication date: July 30, 2020
    Applicant: GRAMMER AG
    Inventors: Roland ÜBELACKER, Hubert WITTMANN, Tobias STAHL
  • Publication number: 20200238853
    Abstract: The invention relates to a system for seat occupancy detection, comprising a vehicle seat for a driver with an upper part and at least one suspension-damper system, an acceleration sensor being arranged on the upper part which is designed to determine a characteristic of an acceleration of the upper part as a function of time, an evaluation unit being provided which is designed to create an evaluation of the characteristic of the acceleration and optionally to send a signal to a higher-level control unit, the evaluation unit also being designed to assign the evaluation to a value of a mass of an object with which the vehicle seat is currently occupied.
    Type: Application
    Filed: January 28, 2020
    Publication date: July 30, 2020
    Applicant: GRAMMER AG
    Inventors: Roland ÜBELACKER, Hubert WITTMANN, Tobias STAHL
  • Patent number: 10427566
    Abstract: A vehicle seat comprising a device for levelling the vehicle seat is provided. The vehicle seat including an upper seat element, which can be moved relative to a lower seat element by a first air spring and on which a mass can be arranged The lower and the upper seat element are arranged at a predetermined distance from one another, and the first air spring is fluidically connected to an additional volume of an additional volume module by a first fluid connection. The internal pressure of the first air spring is controllable by the additional volume module.
    Type: Grant
    Filed: October 18, 2017
    Date of Patent: October 1, 2019
    Assignee: GRAMMER AG
    Inventors: Konstantin Lorey, Hubert Wittmann, Konstantin Krivenkov
  • Publication number: 20180111524
    Abstract: A vehicle seat comprising a device for levelling the vehicle seat is provided. The vehicle seat including an upper seat element, which can be moved relative to a lower seat element by a first air spring and on which a mass can be arranged The lower and the upper seat element are arranged at a predetermined distance from one another, and the first air spring is fluidically connected to an additional volume of an additional volume module by a first fluid connection. The internal pressure of the first air spring is controllable by the additional volume module.
    Type: Application
    Filed: October 18, 2017
    Publication date: April 26, 2018
    Inventors: Konstantin LOREY, Hubert WITTMANN, Konstantin KRIVENKOV
  • Publication number: 20160327501
    Abstract: A filter for a respiratory air analyzer includes a filter housing, a converter material, and a sensor arranged in the filter housing. The converter material is arranged in the filter housing between a gas inlet opening and a gas outlet opening. The sensor has a first electrode and a second electrode that are configured to record a characteristic of at least a part of the converter material that is arranged between the first and second electrodes.
    Type: Application
    Filed: May 3, 2016
    Publication date: November 10, 2016
    Inventors: Heike Vogel, Christina Herlt, Kathy Sahner, Hubert Wittmann
  • Patent number: 8534646
    Abstract: The invention relates to a seat suspension device for a vehicle seat, in particular a commercial vehicle seat, comprising at least one air spring, said air spring being disposed between an upper seat portion of the vehicle seat and a lower seat portion of the vehicle seat, and at least one hose-like member connected to the air spring via a first connection line for an extension volume of the air spring is provided, said hose-like member being arranged along at least one fold of a bellows-like facing extending between an upper seat portion and a lower seat portion of a vehicle seat.
    Type: Grant
    Filed: July 7, 2011
    Date of Patent: September 17, 2013
    Assignee: Grammer AG
    Inventors: Rupert Bauer, Nikolaus Haller, Johann Meier, Hubert Wittmann
  • Publication number: 20120007293
    Abstract: The invention relates to a seat suspension device for a vehicle seat, in particular a commercial vehicle seat, comprising at least one air spring, said air spring being disposed between an upper seat portion of the vehicle seat and a lower seat portion of the vehicle seat, and at least one hose-like member connected to the air spring via a first connection line for an extension volume of the air spring is provided, said hose-like member being arranged along at least one fold of a bellows-like facing extending between an upper seat portion and a lower seat portion of a vehicle seat.
    Type: Application
    Filed: July 7, 2011
    Publication date: January 12, 2012
    Applicant: GRAMMER AG
    Inventors: Rupert BAUER, Nikolaus HALLER, Johann MEIER, Hubert WITTMANN
  • Publication number: 20110165448
    Abstract: The present invention concerns a tube plate for an electrode, preferably a positive electrode, of a lead acid battery, wherein the tube plate (2) has an upper frame (3) and a plurality of lead or lead alloy cores (1) extending substantially parallel from the upper frame (3). To provide a tube plate for an electrode of a lead acid battery, with which a lower current density and shorter current paths or diffusion paths for reducing the electrical resistance in comparison with tube plates in accordance with the state of the art are achieved, with the same use of material, it is proposed according to the invention that in the cross-section relative to their longitudinal extent the cores (1) have a surface profile with at least three convex portions (11) and at least three concave portions (12), wherein convex and concave portions (11, 12) alternate in the course of the surface profile.
    Type: Application
    Filed: July 14, 2009
    Publication date: July 7, 2011
    Applicant: EXIDE TECHNOLOGIES GMBH
    Inventors: Friedrich Kramm, Hubert Wittmann