Patents by Inventor Martin Rölver

Martin Rölver 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: 20250121380
    Abstract: A gas cleaning device including a filter cartridge with a filter medium and a first filter terminal, a duct with a filter support that removably supports the filter cartridge in a volume of the duct in between the gas inlet and the gas outlet of the duct, and a gas ionizer that provides enhanced intrinsic safety against malfunction, ozone release and electric shocks of maintenance personnel. When the filter cartridge is inserted into the filter support, the first duct terminal contacts the first filter terminal and the first ionizer terminal is electrically connected with the first duct terminal via the first filter terminal. If the filter cartridge is removed from the filter support, the electrical connection between the gas ionizer and the duct terminal is interrupted.
    Type: Application
    Filed: August 16, 2024
    Publication date: April 17, 2025
    Inventors: Stefan Robert, Andreas Borchard, Martin Rölver
  • Publication number: 20250083155
    Abstract: A gas filter that includes a filter medium configured to filter a gas flow propagating from an upstream facing side through the filter medium to a downstream facing side. The filter medium includes a capacitor with a first electrode, a second electrode, and a dielectric medium. The gas filter also includes a first electrical contact and a second electrical contact such that the first electrical contact is electrically connected via a first resistor to a branching point and the second electrical contact is electrically connected via a second resistor the same branching point. Further, the first electrode is preferably electrically connected to such branching point and the second electrode is preferably electrically connected to the second electrical contact.
    Type: Application
    Filed: August 16, 2024
    Publication date: March 13, 2025
    Inventors: Stefan Robert, Andreas Borchard, Martin Rölver, Tom Klaver
  • Publication number: 20240142054
    Abstract: A gas management apparatus and a method for conditioning anode gas of a fuel cell. The apparatus comprises a fluid tank and a water separator that is fluidically connected thereto, a drainage valve being arranged in the upper area and/or above the top side of the fluid tank. During proper operation, gases and liquids, in particular water, are drawn off via said one drainage valve.
    Type: Application
    Filed: March 8, 2022
    Publication date: May 2, 2024
    Inventor: Martin RÖLVER
  • Patent number: 11440027
    Abstract: A method for operating a centrifugal separator associated with a prime mover and/or a working machine. The centrifugal separator comprises at least one rotatably mounted rotor that can be rotated at a variable speed via a drive controlled by a control unit. The method is characterized in that the speed of the rotor is controlled according to the sound emissions of the prime mover and/or according to the sound emissions of the working machine.
    Type: Grant
    Filed: May 22, 2018
    Date of Patent: September 13, 2022
    Assignee: Hengst SE
    Inventors: Martin Rölver, Michael Reimann, Stefan Robert
  • Patent number: 10801377
    Abstract: A method for operating a rotation separator in an internal combustion engine, wherein, after the engine and separator have been switched off, it is determined whether there is a danger of the condensate in the separator freezing to ice because of cold ambient temperatures. If there is danger of ice formation, the separator is started up again by itself, i.e., without the engine being re-started, and is operated at a speed that effectively removes condensate from the rotor of the separator, so as to prevent icing of the separator.
    Type: Grant
    Filed: October 4, 2018
    Date of Patent: October 13, 2020
    Inventors: Stefan Robert, Martin Rölver
  • Publication number: 20200147623
    Abstract: A method for operating a centrifugal separator associated with a prime mover and/or a working machine. The centrifugal separator comprises at least one rotatably mounted rotor that can be rotated at a variable speed via a drive controlled by a control unit. The method is characterized in that the speed of the rotor is controlled according to the sound emissions of the prime mover and/or according to the sound emissions of the working machine.
    Type: Application
    Filed: May 22, 2018
    Publication date: May 14, 2020
    Inventors: Martin RÖLVER, Michael REIMANN, Stefan ROBERT
  • Publication number: 20190032529
    Abstract: A method for operating a rotation separator in an internal combustion engine, wherein, after the engine and separator have been switched off, it is determined whether there is a danger of the condensate in the separator freezing to ice because of cold ambient temperatures. If there is danger of ice formation, the separator is started up again by itself, i.e., without the engine being re-started, and is operated at a speed that effectively removes condensate from the rotor of the separator, so as to prevent icing of the separator.
    Type: Application
    Filed: October 4, 2018
    Publication date: January 31, 2019
    Inventors: Stefan Robert, Martin Rölver
  • Publication number: 20110281712
    Abstract: A centrifugal separator for separating oil mist out of the crankcase vent gas of an internal combustion engine or for separating solid contaminants out of the lubricant oil of an internal combustion engine, wherein the centrifugal separator has a rotationally drivable rotor, a housing which accommodates the rotor and a rotary drive for the rotor, wherein the rotary drive is an electric motor arranged within the housing. The centrifugal separator includes an arrangement for cooling the electric motor.
    Type: Application
    Filed: November 5, 2009
    Publication date: November 17, 2011
    Applicant: HENGST GMBH & CO., KG
    Inventors: Guido Schlamann, Frank Mendel, Martin Rölver, Harald Torno