Patents by Inventor Roman Haas

Roman Haas 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: 20230075054
    Abstract: The invention relates to a utility vehicle (IO), preferably a truck, comprising a structure (22) or trailer (46) having a consumer (20) and a fuel cell device (12). The fuel cell device (12) is designed to be connectable as a range extender of the utility vehicle (IO) and to supply the consumer (20) with electrical power and/or waste heat.
    Type: Application
    Filed: January 19, 2021
    Publication date: March 9, 2023
    Applicant: MAN Truck & Bus SE
    Inventors: Roman Haas, Norbert Burger, Jochen Butscher
  • Patent number: 9970473
    Abstract: A fastening element with a nut and a thrust washer is provided. The nut includes an interior portion with an internal thread and an abutment surface at one end. A snap edge radially encloses the abutment surface and has a nose edge projecting radially inward, with a chamber being formed between the abutment surface, the snap edge and the nose edge. The thrust washer has an interior recess, a flanged portion and a cylindrical portion, with an outside diameter of the flanged portion being greater than an outside diameter of the cylindrical portion. The flanged portion, the cylindrical portion, the snap edge and the nose edge are coordinated with one another, with the nose edge projecting into the interior of the nut such that the nose edge and the snap edge at least partially enclose the flanged portion of the thrust washer.
    Type: Grant
    Filed: August 22, 2014
    Date of Patent: May 15, 2018
    Assignee: Neumayer Tekfor Engineering GmbH
    Inventors: Roman Haas, Freia Griesshaber
  • Publication number: 20160252128
    Abstract: A fastening element with a nut and a thrust washer is provided. The nut includes an interior portion with an internal thread and an abutment surface at one end. A snap edge radially encloses the abutment surface and has a nose edge projecting radially inward, with a chamber being formed between the abutment surface, the snap edge and the nose edge. The thrust washer has an interior recess, a flanged portion and a cylindrical portion, with an outside diameter of the flanged portion being greater than an outside diameter of the cylindrical portion. The flanged portion, the cylindrical portion, the snap edge and the nose edge are coordinated with one another, with the nose edge projecting into the interior of the nut such that the nose edge and the snap edge at least partially enclose the flanged portion of the thrust washer.
    Type: Application
    Filed: August 22, 2014
    Publication date: September 1, 2016
    Inventors: Roman HAAS, Griesshaber FREIA
  • Patent number: 9175730
    Abstract: A mounting assembly is provided for, for example, joining a cardan shaft to an axle drive of a vehicle. The mounting assembly includes a nut housing having a continuous opening arranged to receive an insert nut having a continuous internal thread, a nut having a continuous internal thread, and at least one securing element which interacts with the nut housing and the nut to constrain relative axial movement between the nut housing and the nut. The insert nut and the nut housing may be rotationally fixed relative to one another, for example using complementary polygonal outer and inner surfaces, respectively. A retainer may be provided in the interior space of the nut housing to constrain axial movement of the insert nut within the nut housing.
    Type: Grant
    Filed: October 23, 2012
    Date of Patent: November 3, 2015
    Assignee: Amtek Tekfor Holding GmbH
    Inventors: Roman Haas, Martin Lehmann, Christoph Karl
  • Publication number: 20140301803
    Abstract: A mounting assembly is provided for, for example, joining a cardan shaft to an axle drive of a vehicle. The mounting assembly includes a nut housing having a continuous opening arranged to receive an insert nut having a continuous internal thread, a nut having a continuous internal thread, and at least one securing element which interacts with the nut housing and the nut to constrain relative axial movement between the nut housing and the nut. The insert nut and the nut housing may be rotationally fixed relative to one another, for example using complementary polygonal outer and inner surfaces, respectively. A retainer may be provided in the interior space of the nut housing to constrain axial movement of the insert nut within the nut housing.
    Type: Application
    Filed: October 23, 2012
    Publication date: October 9, 2014
    Inventors: Roman Haas, Martin Lehmann, Christoph Karl
  • Patent number: 4291367
    Abstract: A power supply circuit is disclosed with a self-oscillating blocking oscillator. A switching transistor and a transformer connecting to a supply voltage produce a DC output voltage which can be obtained from the transformer via a rectifier arrangement. A regulating circuit in a control circuit of the switching transistor is provided which controls the switching transistor as a function of a comparison voltage which is drawn from a primary circuit of the transformer. An integration member connected parallel to the supply voltage produces a periodic, sawtooth-shaped signal which corresponds to the current in the primary circuit and with which the regulating circuit is driven so as to trigger the switching transistor.
    Type: Grant
    Filed: November 13, 1979
    Date of Patent: September 22, 1981
    Assignee: Siemens Aktiengesellschaft
    Inventor: Roman Haas