Patents by Inventor Johann Bücher

Johann Bücher 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: 11005681
    Abstract: Method for digital, bidirectional data transmission between a position measuring system (3-7) and a motor control device (1) and/or an evaluation unit based on the transmission of frames (34, 35, 36) of a predefined bit length in chronologically sequential time slots (28-30), wherein a primary master (1) communicates via a two wire bus line (2) with the position measuring system (3-7) and/or the motor unit (11, 14) and/or the evaluation unit with a primary slave (3) disposed there, and that additional sub-slaves (12, 15) can be coupled in parallel to the primary slave (3), which sub-slaves communicate on the same bus line (2), which the primary master (1) uses with the primary slave (3).
    Type: Grant
    Filed: July 31, 2018
    Date of Patent: May 11, 2021
    Assignee: HENGSTLER GMBH
    Inventors: Johann Buecher, Martin Linden, Wolfgang Klaiber
  • Publication number: 20190245865
    Abstract: A method for data transmission between an encoder and a motor and/or actuator control unit via an insecure multi-channel channel, the multi-channel channel being formed as a black channel that forms a non-secure transmission channel that is verified by a higher-level or downstream instance, wherein an additional security protocol is superimposed on the black channel, comprising the non-secure protocol thereof, and the secure protocol transmits additional data, relating to the transmission via the black channel, to two mutually independent evaluation units which generate a verifiable redundancy that is evaluated in a downstream functional module.
    Type: Application
    Filed: February 6, 2019
    Publication date: August 8, 2019
    Inventors: Johann BUECHER, Martin LlNDEN, Wolfgang KLAIBER
  • Publication number: 20190036731
    Abstract: Method for digital, bidirectional data transmission between a position measuring system (3-7) and a motor control device (1) and/or an evaluation unit based on the transmission of frames (34, 35, 36) of a predefined bit length in chronologically sequential time slots (28-30), wherein a primary master (1) communicates via a two wire bus line (2) with the position measuring system (3-7) and/or the motor unit (11, 14) and/or the evaluation unit with a primary slave (3) disposed there, and that additional sub-slaves (12, 15) can be coupled in parallel to the primary slave (3), which sub-slaves communicate on the same bus line (2), which the primary master (1) uses with the primary slave (3).
    Type: Application
    Filed: July 31, 2018
    Publication date: January 31, 2019
    Inventors: Johann BUECHER, Martin LINDEN, Wolfgang KLAIBER
  • Patent number: 9310227
    Abstract: Method for operating a multi-channel rotary encoder comprising at least one printed circuit board on which one or a plurality of functional units (1, 1a, 1b, 1c, 2, 3, 4) are arranged as integrated components and are interconnected, at least one position transducer (6, 7) generating absolute and incremental measurement values which are each fed to a control unit (5) by means of at least one channel (37, 38), the control unit being disposed as a management and safety monitoring unit and controlling a downstream-connected machine, wherein the rotary encoder consists of at least three functional units (1, 2, 3), that the position transducer (6) is arranged in a first functional unit (1) and generates absolute location-position values (9) in this functional unit (1), which are fed by a second functional unit (2), which is connected as an interface, as first secure data (39) by means of the first secure channel (37) to the control unit (5), and that the position transducer (6) feeds its incremental measurement val
    Type: Grant
    Filed: June 26, 2013
    Date of Patent: April 12, 2016
    Assignee: HENGSTLER GMBH
    Inventors: Johann Buecher, Uwe Grigo, Wolfgang Klaiber, Martin Linden
  • Publication number: 20150160045
    Abstract: Method for operating a multi-channel rotary encoder comprising at least one printed circuit board on which one or a plurality of functional units (1, 1a, 1b, 1c, 2, 3, 4) are arranged as integrated components and are interconnected, at least one position transducer (6, 7) generating absolute and incremental measurement values which are each fed to a control unit (5) by means of at least one channel (37, 38), the control unit being disposed as a management and safety monitoring unit and controlling a downstream-connected machine, wherein the rotary encoder consists of at least three functional units (1, 2, 3), that the position transducer (6) is arranged in a first functional unit (1) and generates absolute location-position values (9) in this functional unit (1), which are fed by a second functional unit (2), which is connected as an interface, as first secure data (39) by means of the first secure channel (37) to the control unit (5), and that the position transducer (6) feeds its incremental measurement val
    Type: Application
    Filed: June 26, 2013
    Publication date: June 11, 2015
    Applicant: Hengstler GmbH
    Inventors: Johann Buecher, Uwe Grigo, Wolfgang Klaiber, Martin Linden
  • Patent number: 8797048
    Abstract: A capacitive rotation sensor for detecting the position of an object moving relative to a stationary object, comprising a shaft rotatably supported in a housing flange, said shaft being connected integral in rotation therewith to a rotor to which, separated by an air gap, a stator situated opposite thereto is assigned, wherein at least the rotor, the stator and an evaluation circuit are enclosed by an electrically conductive cap, wherein a stator surface is arranged on the underside of a circuit board and the stator surface has assigned thereto, situated opposite thereto and separated by the air gap, a non-rotation-symmetrical rotor disc which, in turn, is fixed on a rotor support, said rotor support being fastened highly precisely on the outer periphery of the shaft so as to be integral in rotation therewith.
    Type: Grant
    Filed: April 28, 2010
    Date of Patent: August 5, 2014
    Assignee: Hengstler GmbH
    Inventors: Siegfried Held, Johann Buecher, Andreas Woehrstein
  • Publication number: 20120278033
    Abstract: Method for the determination of the position angle of a capacitive motion encoder (1) for sensing the position of a rotor (6) relative to a stator (2, 37) comprising an eccentric rotor disk (6, 7) relatively movable to a stationary stator (2, 37) with four electrical isolated field transmitters (4a, 4b, 4c, 4d; 38a-d) which generate an electrostatic field in a receiver area (5) which is modulated by a change in capacitance between the stator (2, 37) and rotor disk (6, 7) response to relative motion of the elements; and a processing circuitry (49) coupled to sense the modulated electrostatical field and determine responsive thereto a measure of the position of a moving object, characterized in that within one cyclic measurement time (10) at least 8 measurements (11 through 18) are carried out defining at least 8 different capacitance values (C1, C2, C3, C4, C4?, C3?, C2?, C1?) where the first capacitor C1 is measured in the 1st and 8th cycle, the second capacitor C2 is measured in the 2nd and 7th cycle, the th
    Type: Application
    Filed: December 3, 2010
    Publication date: November 1, 2012
    Applicant: HENGSTLER GMBH
    Inventors: Johann Bücher, Siegfried Held
  • Publication number: 20100271050
    Abstract: A capacitive rotation sensor for detecting the position of an object moving relative to a stationary object, comprising a shaft rotatably supported in a housing flange, said shaft being connected integral in rotation therewith to a rotor to which, separated by an air gap, a stator situated opposite thereto is assigned, wherein at least the rotor, the stator and an evaluation circuit are enclosed by an electrically conductive cap, wherein a stator surface is arranged on the underside of a circuit board and the stator surface has assigned thereto, situated opposite thereto and separated by the air gap, a non-rotation-symmetrical rotor disc which, in turn, is fixed on a rotor support, said rotor support being fastened highly precisely on the outer periphery of the shaft so as to be integral in rotation therewith.
    Type: Application
    Filed: April 28, 2010
    Publication date: October 28, 2010
    Applicant: HENGSTLER GMBH
    Inventors: Siegfried HELD, Johann Buecher, Andreas Woehrstein