Patents by Inventor Christian PRAEST

Christian PRAEST 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: 11971109
    Abstract: A valve for a liquid system of a vehicle having a valve housing with a multiplicity of valve housing openings, a valve body that is arranged in the valve housing so as to be rotatable about a rotational axis and has at least one flow-conducting connecting passage for the flow-conducting connection of at least two valve housing openings of the multiplicity of valve housing openings. A valve seal is arranged between the valve housing and the valve body. A valve actuator rotates the valve body about the rotational axis, and a multiplicity of flow passages corresponding to the valve housing openings for the flow-conducting connection of the valve to a remainder of the liquid system, are provided. The flow passages are jointly formed from a single first passage shell and a single second passage shell. The first passage shell is simultaneously formed as the valve housing.
    Type: Grant
    Filed: July 28, 2023
    Date of Patent: April 30, 2024
    Assignee: Hella GmbH & Co. KGaA
    Inventors: Frank Bewermeyer, Finn Malte Fischer, Benjamin Grothe, Dominik Niess, Christian Praest
  • Patent number: 11873815
    Abstract: A vane pump having an electric drive unit with a drive shaft, a pump chamber, a rotor arranged in the pump chamber so as to rotate about a rotational axis, and a driver that has at least one driver pin and is connected in a rotationally fixed manner to the drive shaft, wherein, in an operating state of the vane pump, the driver pin, by way of a contact surface of the driver pin designed as a section of a lateral surface, engages in a torque-transmitting manner with a contact surface of the rotor delimiting a rotor recess designed to correspond to the driver pin. In order to improve a vane pump, it is proposed that the contact surface of the rotor is designed and arranged in such a manner that the rotational axis lies in the contact surface when this contact surface is hypothetically extended toward the rotational axis.
    Type: Grant
    Filed: March 9, 2022
    Date of Patent: January 16, 2024
    Assignee: Hella GmbH & Co. KGaA
    Inventors: Sascha Bruemmer, Sebastian Gajda, Georg Goessmann, Theodor Hueser, Christian Koester, Dennis Marburg, Christian Praest
  • Publication number: 20230366474
    Abstract: A valve for a liquid system of a vehicle having a valve housing with a multiplicity of valve housing openings, a valve body that is arranged in the valve housing so as to be rotatable about a rotational axis and has at least one flow-conducting connecting passage for the flow-conducting connection of at least two valve housing openings of the multiplicity of valve housing openings. A valve seal is arranged between the valve housing and the valve body. A valve actuator rotates the valve body about the rotational axis, and a multiplicity of flow passages corresponding to the valve housing openings for the flow-conducting connection of the valve to a remainder of the liquid system, are provided. The flow passages are jointly formed from a single first passage shell and a single second passage shell. The first passage shell is simultaneously formed as the valve housing.
    Type: Application
    Filed: July 28, 2023
    Publication date: November 16, 2023
    Applicant: HELLA GmbH & Co. KGaA
    Inventors: Frank BEWERMEYER, Finn Malte FISCHER, Benjamin GROTHE, Dominik NIESS, Christian PRAEST
  • Publication number: 20230246515
    Abstract: An assembly of an electrical apparatus, having a housing part, a circuit board, an electrical circuit and a cover, which together with the housing part forms an electronics chamber in which the electrical circuit is arranged. The assembly has press-fit contacts which have a press-fit section, a mounting section and a contact section, wherein the press-fit contacts have at least one first press-fit contact, the press-fit section of which is pressed into the circuit board from a first side, whose mounting section is fixed in a wall of the housing part and whose contact section protrudes into the housing part. The press-fit contacts have at least one second press-fit contact, the press-fit portion of which is pressed into the circuit board from a second side, whose mounting section is fixed in the cover and whose contact section protrudes from the cover.
    Type: Application
    Filed: January 31, 2023
    Publication date: August 3, 2023
    Applicant: HELLA GmbH & Co. KGaA
    Inventors: Ralf CARSTENS, Georg GOESSMANN, Benjamin GROTHE, Barbara HILWERLING, Ciprian Ionel IVANUT, Christian PRAEST, Thorsten WILLE-RIESS
  • Publication number: 20220196014
    Abstract: A vane pump having an electric drive unit with a drive shaft, a pump chamber, a rotor arranged in the pump chamber so as to rotate about a rotational axis, and a driver that has at least one driver pin and is connected in a rotationally fixed manner to the drive shaft, wherein, in an operating state of the vane pump, the driver pin, by way of a contact surface of the driver pin designed as a section of a lateral surface, engages in a torque-transmitting manner with a contact surface of the rotor delimiting a rotor recess designed to correspond to the driver pin. In order to improve a vane pump, it is proposed that the contact surface of the rotor is designed and arranged in such a manner that the rotational axis lies in the contact surface when this contact surface is hypothetically extended toward the rotational axis.
    Type: Application
    Filed: March 9, 2022
    Publication date: June 23, 2022
    Applicant: Hella GmbH & Co. KGaA
    Inventors: Sascha BRUEMMER, Sebastian GAJDA, Georg GOESSMANN, Theodor HUESER, Christian KOESTER, Dennis MARBURG, Christian PRAEST
  • Publication number: 20220190688
    Abstract: A device with a housing electrically conductive at least in regions, with an electrical circuit in the housing, with an electrically conductive connection between an electrically conductive region of the housing and the circuit, and with a holder made up of an insulator, which is arranged in the housing and to which at least parts and/or components of the electrical circuit are attached. At least one electrically conductive spring element, which is attached in or to the holder and which has a first end protruding beyond the holder and bearing against the housing with a spring force, is provided for establishing the electrically conductive connection between the electrically conductive region of the housing and the circuit.
    Type: Application
    Filed: December 10, 2021
    Publication date: June 16, 2022
    Applicant: Hella GmbH & Co. KGaA
    Inventors: Horst FELDKAMP, Georg GOESSMANN, Christian PRAEST, Christoph SCHULTE, Benjamin GROTHE
  • Patent number: 10774835
    Abstract: A vacuum pump with a primarily cylinder-shaped pump housing is provided. A bowl-shaped sound-absorbing cover is attached on the pump housing and a circumferential gap space for sound absorption is formed between the pump housing and the sound-absorbing cover. The pump housing has an end face in which at least one air outlet opening is arranged. An elastic upstream sound absorber element is arranged between the end face and the sound-absorbing cover so that an upstream chamber is formed therebetween into which the air flows from the air outlet opening. The upstream sound absorber element has a molded projection facing the end face with an air channel passing through the projection. The projection is arranged at a distance from the end face during operation of the vacuum pump. While the vacuum pump is idle, the projection makes contact with the end face through elastic deformation of the upstream sound absorber element, causing the air channel to be closed off and creating a check valve function.
    Type: Grant
    Filed: November 14, 2016
    Date of Patent: September 15, 2020
    Assignee: Hella GmbH & Co. KGaA
    Inventors: Ingo Geue, Theodor Hüser, Christian Praest, Thomas Valeiras Fernandez
  • Patent number: 10744990
    Abstract: An arrangement of an electric vacuum pump, for example, in a vehicle, wherein a mounting element is provided on which the vacuum pump is installed, and wherein the vacuum pump comprises a pump chamber part and a motor part, and wherein a longitudinal axis extends through the pump chamber part and the motor part. According to the invention, the vacuum pump has a horizontal arrangement with respect to a gravitational direction, wherein the installation of the vacuum pump on the mounting element is limited to two mounting points, and wherein a center of gravity of the vacuum pump lies on a connection axis between the two mounting points.
    Type: Grant
    Filed: May 24, 2018
    Date of Patent: August 18, 2020
    Assignee: HELLA GmbH & Co. KGaA
    Inventors: Ingo Geue, Theodor Hueser, Christian Praest, Thomas Valeiras Fernandez
  • Patent number: 10288055
    Abstract: An electric vacuum pump, in particular for arrangement in a vehicle, having an electric motor and a pump part, which can be driven by the electric motor, so that air can be drawn into the pump part from a suction connection and wherein air can be taken out of the pump part out of an outlet connection. A motor flange is provided on which the pump part rests, and the outlet connection is disposed on the motor flange. A receiving space is formed in the motor flange into which space the outlet connection opens, and a rubber-elastic insert part, which has a hollow inner region which communicates with the outlet connection, is accommodated in the receiving space. The insert part has at least one air guide opening via which air can flow from the pump part into the inner region.
    Type: Grant
    Filed: April 23, 2018
    Date of Patent: May 14, 2019
    Assignee: Hella GmbH & Co. KGaA
    Inventors: Ingo Geue, Theodor Hueser, Christian Praest, Raimund Wolke
  • Publication number: 20180370517
    Abstract: An arrangement of an electric vacuum pump, for example, in a vehicle, wherein a mounting element is provided on which the vacuum pump is installed, and wherein the vacuum pump comprises a pump chamber part and a motor part, and wherein a longitudinal axis extends through the pump chamber part and the motor part. According to the invention, the vacuum pump has a horizontal arrangement with respect to a gravitational direction, wherein the installation of the vacuum pump on the mounting element is limited to two mounting points, and wherein a center of gravity of the vacuum pump lies on a connection axis between the two mounting points.
    Type: Application
    Filed: May 24, 2018
    Publication date: December 27, 2018
    Applicant: HELLA GmbH & Co. KGaA
    Inventors: Ingo GEUE, Theodor HUESER, Christian PRAEST, Thomas VALEIRAS FERNANDEZ
  • Publication number: 20180335034
    Abstract: A vacuum pump with a primarily cylinder-shaped pump housing is provided. A bowl-shaped sound-absorbing cover is attached on the pump housing and a circumferential gap space for sound absorption is formed between the pump housing and the sound-absorbing cover. The pump housing has an end face in which at least one air outlet opening is arranged. An elastic upstream sound absorber element is arranged between the end face and the sound-absorbing cover so that an upstream chamber is formed therebetween into which the air flows from the air outlet opening. The upstream sound absorber element has a molded projection facing the end face with an air channel passing through the projection. The projection is arranged at a distance from the end face during operation of the vacuum pump. While the vacuum pump is idle, the projection makes contact with the end face through elastic deformation of the upstream sound absorber element, causing the air channel to be closed off and creating a check valve function.
    Type: Application
    Filed: November 14, 2016
    Publication date: November 22, 2018
    Inventors: Ingo Geue, Theodor Hüser, Christian Praest, Thomas Valeiras Fernandez
  • Publication number: 20180238311
    Abstract: An electric vacuum pump, in particular for arrangement in a vehicle, having an electric motor and a pump part, which can be driven by the electric motor, so that air can be drawn into the pump part from a suction connection and wherein air can be taken out of the pump part out of an outlet connection. A motor flange is provided on which the pump part rests, and the outlet connection is disposed on the motor flange. A receiving space is formed in the motor flange into which space the outlet connection opens, and a rubber-elastic insert part, which has a hollow inner region which communicates with the outlet connection, is accommodated in the receiving space. The insert part has at least one air guide opening via which air can flow from the pump part into the inner region.
    Type: Application
    Filed: April 23, 2018
    Publication date: August 23, 2018
    Applicant: HELLA GmbH & Co. KGaA
    Inventors: Ingo GEUE, Theodor HUESER, Christian PRAEST, Wolke RAIMUND