Patents by Inventor Johannes Graf

Johannes Graf 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: 20250141233
    Abstract: Method for optimizing a maximum power point of a solar cell stack having modules, each including an MLSD unit, and an inverter. The MLSD unit shuts down the module when module voltage falls below a first voltage threshold, and switches it on, when a predefined second voltage threshold is exceeded. For optimal performance, the solar cell stack carries out: Defining, changing an electrical control parameter to a first wait value so that the second voltage threshold is exceeded exceeded; maintaining first wait value for a first time period so the modules are switched on by the MLSD units; changing electrical control parameter to a threshold value in a variation range and determining current-voltage curves for the modules in variation range; determining maximum stack power from current-voltage curves of the modules in the variation range; and predefining the determined maximum stack power as the maximum performance point.
    Type: Application
    Filed: January 26, 2023
    Publication date: May 1, 2025
    Applicant: Fronius International GmbH
    Inventors: Richard GRASBÖCK, Johannes GRAF, Stefan WIESER, Christian FASTHUBER
  • Patent number: 11555224
    Abstract: A process of producing a partially hardened metallic formed part comprises: heating a semi-finished product of hardenable hot-formable steel sheet to a hardening temperature; hot-forming the heated semi-finished product in a combined hot-forming cutting device into a three-dimensional formed part; cutting the formed part in the combined hot-forming cutting device; pressure-hardening the formed part in the hot-forming cutting device into a hardened formed part such that a first partial region is hardened by rapid cooling and that a second partial region of the formed part is heat-treated so as to comprise a greater ductility and a lower strength than the first partial region, wherein the operation of cutting the formed part takes place at least in one of the first and second partial region. A combined hot-forming cutting device can be used to produce a metallic formed part.
    Type: Grant
    Filed: January 13, 2020
    Date of Patent: January 17, 2023
    Assignee: WEBA WERKZEUGBAU BETRIEBS GMBH
    Inventors: Johannes Graf, Klaus Weber
  • Publication number: 20210102580
    Abstract: In a method for producing a subassembly for a household appliance, at least one of a first rail and a separate second rail is cleaned by a mechanical and/or chemical cleaning operation. Subsequently the first and second rails are connected to one another so as to be able to slide relative to one another and thereby form a rail withdrawal device of the subassembly.
    Type: Application
    Filed: December 16, 2020
    Publication date: April 8, 2021
    Inventors: Johann Graf, Angelika Namberger, Philipp Nather
  • Patent number: 10948020
    Abstract: In a method for producing a subassembly for a household appliance, at least one of a first rail and a separate second rail is cleaned by a mechanical and/or chemical cleaning operation. Subsequently the first and second rails are connected to one another so as to be able to slide relative to one another and thereby form a rail withdrawal device of the subassembly.
    Type: Grant
    Filed: September 14, 2017
    Date of Patent: March 16, 2021
    Assignee: BSH Hausgeräte GmbH
    Inventors: Johann Graf, Angelika Namberger, Philipp Nather
  • Publication number: 20200149125
    Abstract: A process of producing a partially hardened metallic formed part comprises: heating a semi-finished product of hardenable hot-formable steel sheet to a hardening temperature; hot-forming the heated semi-finished product in a combined hot-forming cutting device into a three-dimensional formed part; cutting the formed part in the combined hot-forming cutting device; pressure-hardening the formed part in the hot-forming cutting device into a hardened formed part such that a first partial region is hardened by rapid cooling and that a second partial region of the formed part is heat-treated so as to comprise a greater ductility and a lower strength than the first partial region, wherein the operation of cutting the formed part takes place at least in one of the first and second partial region. A combined hot-forming cutting device can be used to produce a metallic formed part.
    Type: Application
    Filed: January 13, 2020
    Publication date: May 14, 2020
    Inventors: Johannes Graf, Klaus Weber
  • Patent number: 10584395
    Abstract: A process of producing a partially hardened metallic formed part comprises: heating a semi-finished product of hardenable hot-formable steel sheet to a hardening temperature; hot-forming the heated semi-finished product in a combined hot-forming cutting device into a three-dimensional formed part; cutting the formed part in the combined hot-forming cutting device; pressure-hardening the formed part in the hot-forming cutting device into a hardened formed part such that a first partial region is hardened by rapid cooling and that a second partial region of the formed part is heat-treated so as to comprise a greater ductility and a lower strength than the first partial region, wherein the operation of cutting the formed part takes place at least in one of the first and second partial region. A combined hot-forming cutting device can be used to produce a metallic formed part.
    Type: Grant
    Filed: March 22, 2016
    Date of Patent: March 10, 2020
    Assignee: WEBA WERKZEUGBAU BETRIEBS GMBH
    Inventors: Johannes Graf, Klaus Weber
  • Publication number: 20200032849
    Abstract: In a method for producing a subassembly for a household appliance, at least one of a first rail and a separate second rail is cleaned by a mechanical and/or chemical cleaning operation. Subsequently the first and second rails are connected to one another so as to be able to slide relative to one another and thereby form a rail withdrawal device of the subassembly.
    Type: Application
    Filed: April 14, 2017
    Publication date: January 30, 2020
    Inventors: Johann GRAF, Angelika NAMBERGER, Philipp NATHER
  • Publication number: 20190180570
    Abstract: A gaming system may include a gaming machine having a monetary input device, a wager input device, and a processor. The processor may establish a credit balance based on the monetary value, decrease the credit balance by the selected wager, and present the wagering game at an interface. A game server may transmit content for the wagering game to the gaming machine. The game server may determine prize payouts during game play by detecting sporting event outcomes occurring during live sporting games. Each detected sporting event outcome may correspond to a previously determined prize value. The prize values may be determined based on a data analysis of the probable occurrence of each sporting event outcome in previously completed sporting events.
    Type: Application
    Filed: December 13, 2017
    Publication date: June 13, 2019
    Applicant: Novomatic AG
    Inventors: Roman Czubak, Johann Graf
  • Patent number: 9903255
    Abstract: The invention relates to a coolant circuit (1) for an internal combustion engine (2), wherein the coolant can circulate between the internal combustion engine (2) and a heat sink (3) depending upon a switchable valve (4), which is closed in the initial state during a cold start of the internal combustion engine (2), wherein the valve (4) can be switched to an at least partially opened sequential state depending on an exhaust gas mass flow emitted by the internal combustion engine (2), and wherein a control device (6) determines an integral of the exhaust gas mass flow with respect to the time and switches the valve (4) into the sequential state when an integral threshold value is exceeded.
    Type: Grant
    Filed: June 30, 2012
    Date of Patent: February 27, 2018
    Assignee: Audi AG
    Inventor: Johann Graf
  • Patent number: 9611765
    Abstract: A method and apparatus for operating a valve train of an internal combustion engine having a main camshaft for which at least one rotationally-fixed cam carrier is provided that can be shifted between two axial positions is disclosed. An actuator cooperates with at least one shift gate to axially shift the cam carrier into a target position. The actuator comprises a driver that is extended in the direction of at least one sliding slot of the shift gate to shift the cam carrier. The sliding slot has an ejection ramp in an ejection region that ejects the driver out of the sliding slot until the conclusion of the shift. A voltage induced in the actuator by the ejection is detected, the induced voltage is integrated across a rotational-angle range associated with the ejection region, and a confirmation signal is generated when the integrated voltage exceeds a threshold level.
    Type: Grant
    Filed: June 5, 2013
    Date of Patent: April 4, 2017
    Assignee: AUDI AG
    Inventor: Johann Graf
  • Publication number: 20160281185
    Abstract: A process of producing a partially hardened metallic formed part comprises: heating a semi-finished product of hardenable hot-formable steel sheet to a hardening temperature; hot-forming the heated semi-finished product in a combined hot-forming cutting device into a three-dimensional formed part; cutting the formed part in the combined hot-forming cutting device; pressure-hardening the formed part in the hot-forming cutting device into a hardened formed part such that a first partial region is hardened by rapid cooling and that a second partial region of the formed part is heat-treated so as to comprise a greater ductility and a lower strength than the first partial region, wherein the operation of cutting the formed part takes place at least in one of the first and second partial region,. A combined hot-forming cutting device can be used to produce a metallic formed part.
    Type: Application
    Filed: March 22, 2016
    Publication date: September 29, 2016
    Inventors: Johannes Graf, Klaus Weber
  • Publication number: 20150343721
    Abstract: A device for a resin-injection process for manufacturing an elongate fiber-composite component is disclosed having an upper die and a lower die, wherein the lower die forms a mold cavity for receiving a fiber-layer stack. The inner contour of the mold cavity substantially corresponds to the outer contour of the fiber-composite component to be produced. The device includes a gate 4 for introducing a matrix material into the mold cavity 5, and flow ducts which convey the matrix material are provided on the inner walls of the mold cavity. A method for manufacturing elongate fiber-composite components is disclosed, wherein a stack of a plurality of cut-to-size fiber layers is laid up in the mold cavity of a die comprising an upper die and a lower die. A higher fiber density is produced in the end regions of the stack of fiber layers than in the remaining regions when closing the die.
    Type: Application
    Filed: May 27, 2015
    Publication date: December 3, 2015
    Inventors: Johannes GRAF, Dominik KAISER, Ralph KIESSLING, Jan KURZ, Dennis KLEINHANS, Johannes BOEKE, Marko MACIEJ
  • Publication number: 20150136052
    Abstract: A method and apparatus for operating a valve train of an internal combustion engine having a main camshaft for which at least one rotationally-fixed cam carrier is provided that can be shifted between two axial positions is disclosed. An actuator cooperates with at least one shift gate to axially shift the cam carrier into a target position. The actuator comprises a driver that is extended in the direction of at least one sliding slot of the shift gate to shift the cam carrier. The sliding slot has an ejection ramp in an ejection region that ejects the driver out of the sliding slot until the conclusion of the shift. A voltage induced in the actuator by the ejection is detected, the induced voltage is integrated across a rotational-angle range associated with the ejection region, and a confirmation signal is generated when the integrated voltage exceeds a threshold level.
    Type: Application
    Filed: June 5, 2013
    Publication date: May 21, 2015
    Applicant: AUDI AG
    Inventor: Johann Graf
  • Patent number: 8951590
    Abstract: A tubular bag packaging for bar-shaped food products is made of a film with first and second longitudinal edges. The film has a first seal section at the first longitudinal edge. A flap section at the second longitudinal edge has a second seal section along the second longitudinal edge. The film is closed at the seal sections by forming a continuous back seam in longitudinal direction as a fold-over seam. The film is sealed at transverse edges by transverse seams. The back seam has end face edges adjoining the transverse seams. The flap section has a linear separation cut as a tearing aid disposed on at least one of the end face edges and extending away from the end face edge in longitudinal direction. The film in the area of the second seal section with linear separating cut has a pressure deformation line that extends in longitudinal direction.
    Type: Grant
    Filed: September 2, 2011
    Date of Patent: February 10, 2015
    Assignee: Ritter Schönbuch Vermögensverwaltungs GmbH & Co. KG
    Inventors: Klaus Dieter Hätinger, Johannes Graf
  • Patent number: 8915127
    Abstract: In a method and a device for diagnosing a switchable coolant pump for circulating a coolant in a coolant circuit of an internal combustion engine, an actual value of the cylinder head temperature of the internal combustion engine is measured and the actual value of the cylinder head temperature is compared with a model value of the cylinder head temperature. The functionality of the coolant pump is assessed according to the comparison result.
    Type: Grant
    Filed: July 22, 2011
    Date of Patent: December 23, 2014
    Assignee: Audi AG
    Inventor: Johann Graf
  • Publication number: 20140182523
    Abstract: The invention relates to a coolant circuit (1) for an internal combustion engine (2), wherein the coolant can circulate between the internal combustion engine (2) and a heat sink (3) depending upon a switchable valve (4), which is closed in the initial state during a cold start of the internal combustion engine (2), wherein the valve (4) can be switched to an at least partially opened sequential state depending on an exhaust gas mass flow emitted by the internal combustion engine (2), and wherein a control device (6) determines an integral of the exhaust gas mass flow with respect to the time and switches the valve (4) into the sequential state when an integral threshold value is exceeded.
    Type: Application
    Filed: June 30, 2012
    Publication date: July 3, 2014
    Applicant: Audi AG
    Inventor: Johann Graf
  • Patent number: 8589010
    Abstract: In a motor vehicle having two different drives, in particular an internal combustion engine and an electric drive, there are two control units for the respective drives and a leading control unit (Hybrid), which preferably controls the internal combustion engine and assigns torque to the individual drives when there are torque requests. Corresponding request signals are sent and implemented only if the existence of a certain situation (key inserted, “terminal 15”) is detected by an engine immobilizer control unit (EI master). In order for not too much time to pass due to the querying of the engine immobilizer control unit, the leading control unit informs the other control units that a query is sent so that the other control units can also send a query already.
    Type: Grant
    Filed: March 29, 2011
    Date of Patent: November 19, 2013
    Assignee: Audi AG
    Inventors: Johann Graf, Martin Steinbrueck
  • Patent number: 8569908
    Abstract: In a hybrid vehicle which has a plurality of drives, of which in particular one drive is a combustion engine and the other is an electric drive, all the drive control units, if appropriate even a transmission control unit, require enabling by an immobilizer control unit before the first control unit outputs control commands to communicate a torque request, input by a vehicle driver.
    Type: Grant
    Filed: April 15, 2011
    Date of Patent: October 29, 2013
    Assignee: Audi AG
    Inventors: Johann Graf, Martin Steinbrueck
  • Publication number: 20130156065
    Abstract: In a method and a device for diagnosing a switchable coolant pump for circulating a coolant in a coolant circuit of an internal combustion engine, an actual value of the cylinder head temperature of the internal combustion engine is measured and the actual value of the cylinder head temperature is compared with a model value of the cylinder head temperature. The functionality of the coolant pump is assessed according to the comparison result.
    Type: Application
    Filed: July 22, 2011
    Publication date: June 20, 2013
    Applicant: Audi AG
    Inventor: Johann Graf
  • Publication number: 20130103237
    Abstract: In a motor vehicle having two different drives, in particular an internal combustion engine and an electric drive, there are two control units for the respective drives and a leading control unit (Hybrid), which preferably controls the internal combustion engine and assigns torque to the individual drives when there are torque requests. Corresponding request signals are sent and implemented only if the existence of a certain situation (key inserted, “terminal 15”) is detected by an engine immobilizer control unit (EI master). In order for not too much time to pass due to the querying of the engine immobilizer control unit, the leading control unit informs the other control units that a query is sent so that the other control units can also send a query already.
    Type: Application
    Filed: March 29, 2011
    Publication date: April 25, 2013
    Inventors: Johann Graf, Martin Steinbrueck