Patents by Inventor David SHELSTAD

David SHELSTAD 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: 11802383
    Abstract: A method for controlling a quality of a paving material distributed along a paving area using a paver includes: receiving a thermal profile of a portion of the paving area in which the paving material is distributed, and the thermal profile includes a plurality of temperature values of respective measurement points, and analyzing the thermal profile to detect segregation spots of the paving material within the portion. Analyzing includes determining a first zone of measurement points arranged adjacent to each other and having temperature values within a predetermined range, the first zone being at least partially surrounded by measurement points having temperature values out of the predetermined range, and analyzing an orientation of the first zone with respect to a travel direction of the paver. The last substep of analyzing is assigning an indication, in particular an error indication, to the portion based on the analyzing of the orientation.
    Type: Grant
    Filed: June 14, 2021
    Date of Patent: October 31, 2023
    Assignee: MOBA MOBILE AUTOMATION AG
    Inventors: David Shelstad, Paul Angerhofer, Marcus Watermann
  • Publication number: 20230102413
    Abstract: Method for evaluating of a quality of a generated pavement or a generated surface, generated by use of a construction machine, especially a road construction machine, road finishing machine or milling machine, having the following steps: receiving sensor values from one or more sensors and/or a sensor system of the construction machine; determining a specific sensor value combination within the sensor values, the specific sensor value combination being assigned to a specific quality situation; and outputting an operator message dependent on the specific quality situation.
    Type: Application
    Filed: September 29, 2022
    Publication date: March 30, 2023
    Inventor: David SHELSTAD
  • Patent number: 11467035
    Abstract: A control unit of a temperature measurement system for a road construction machine; the control unit having access to a database, a plurality of specification data sets stored on the database, each of the plurality of specification data sets being assigned to a local region and including a temperature measurement specification and/or a temperature measurement report specification; including a data set selector and a data analyzer. The data set selector is configured to select a respective specification data set from the plurality based on position information for the road construction machine, the position information pointing to the respective local region. The data analyzer is connected to a temperature sensor and configured to analyze raw data received from the temperature sensor taking into account the selected temperature measurement specification and/or to output a local specific temperature report based on analyzed raw data taking into account the selected temperature measurement report specification.
    Type: Grant
    Filed: November 25, 2019
    Date of Patent: October 11, 2022
    Assignee: MOBA MOBILE AUTOMATION AG
    Inventors: David Shelstad, Paul Angerhofer
  • Publication number: 20220220676
    Abstract: A levelling system for a road construction machine, especially for a paving machine or a road milling machine, includes a first height sensor arrangement, a second height sensor arrangement, a first controller, a second controller and an additional sensor. The first controller includes a first controller loop configured to control a height position of the first side of the tool or of the first side of the machine chassis based on the first actual value and a first setpoint. The second controller includes a second controller loop configured to control a height position of the second side of the tool or of the second side of the machine chassis based on the second actual value and a second setpoint. The first and/or the second controller are configured to adapt the setpoint based on the actual reference value, wherein a setpoint adaption takes place only either on the first side or on the second side of the tool or of the machine.
    Type: Application
    Filed: March 1, 2022
    Publication date: July 14, 2022
    Inventor: David SHELSTAD
  • Publication number: 20210301480
    Abstract: A method for controlling a quality of a paving material distributed along a paving area using a paver includes: receiving a thermal profile of a portion of the paving area in which the paving material is distributed, and the thermal profile includes a plurality of temperature values of respective measurement points, and analyzing the thermal profile to detect segregation spots of the paving material within the portion. Analyzing includes determining a first zone of measurement points arranged adjacent to each other and having temperature values within a predetermined range, the first zone being at least partially surrounded by measurement points having temperature values out of the predetermined range, and analyzing an orientation of the first zone with respect to a travel direction of the paver. The last substep of analyzing is assigning an indication, in particular an error indication, to the portion based on the analyzing of the orientation.
    Type: Application
    Filed: June 14, 2021
    Publication date: September 30, 2021
    Inventors: David SHELSTAD, Paul ANGERHOFER, Marcus WATERMANN
  • Patent number: 11066791
    Abstract: A method for controlling a quality of a paving material distributed along a paving area using a paver includes: receiving a thermal profile of a portion of the paving area in which the paving material is distributed, and the thermal profile includes a plurality of temperature values assigned to respective measurement points, and analyzing the thermal profile in order to detect segregation spots of the paving material within the portion. Analyzing includes determining a first zone of measurement points arranged adjacent to each other and having temperature values within a predetermined range, the first zone being at least partially surrounded by measurement points having temperature values out of the predetermined range, and analyzing an orientation of the first zone with respect to a travel direction of the paver. The last substep of analyzing is assigning an indication, in particular an error indication, to the portion based on the analyzing of the orientation.
    Type: Grant
    Filed: September 11, 2018
    Date of Patent: July 20, 2021
    Assignee: MOBA MOBILE AUTOMATION AG
    Inventors: David Shelstad, Paul Angerhofer, Marcus Watermann
  • Publication number: 20200173857
    Abstract: A control unit of a temperature measurement system for a road construction machine; the control unit having access to a database, a plurality of specification data sets stored on the database, each of the plurality of specification data sets being assigned to a local region and including a temperature measurement specification and/or a temperature measurement report specification; including a data set selector and a data analyzer. The data set selector is configured to select a respective specification data set from the plurality based on position information for the road construction machine, the position information pointing to the respective local region. The data analyzer is connected to a temperature sensor and configured to analyze raw data received from the temperature sensor taking into account the selected temperature measurement specification and/or to output a local specific temperature report based on analyzed raw data taking into account the selected temperature measurement report specification.
    Type: Application
    Filed: November 25, 2019
    Publication date: June 4, 2020
    Inventors: David SHELSTAD, Paul ANGERHOFER
  • Publication number: 20190078275
    Abstract: A method for controlling a quality of a paving material distributed along a paving area using a paver includes: receiving a thermal profile of a portion of the paving area in which the paving material is distributed, and the thermal profile includes a plurality of temperature values assigned to respective measurement points, and analyzing the thermal profile in order to detect segregation spots of the paving material within the portion. Analyzing includes determining a first zone of measurement points arranged adjacent to each other and having temperature values within a predetermined range, the first zone being at least partially surrounded by measurement points having temperature values out of the predetermined range, and analyzing an orientation of the first zone with respect to a travel direction of the paver. The last substep of analyzing is assigning an indication, in particular an error indication, to the portion based on the analyzing of the orientation.
    Type: Application
    Filed: September 11, 2018
    Publication date: March 14, 2019
    Inventors: David SHELSTAD, Paul ANGERHOFER, Marcus WATERMAN
  • Patent number: 10184838
    Abstract: A device for determining the temperature of a road building material applied by a construction machine in a placement width includes an infrared temperature measuring head, a motor and a controller. The infrared temperature measuring head is arranged to be twistable by the motor in a manner transverse to the direction of travel of the construction machine so as to scan the surface of the road building material to capture temperature measuring values of the surface of road building material during a rotational movement at a plurality of measuring points spaced apart from one another. The controller is configured to set a scanning speed as a function of a position of the measuring point.
    Type: Grant
    Filed: May 1, 2017
    Date of Patent: January 22, 2019
    Assignee: MOBA MOBILE AUTOMATION AG
    Inventors: Dominik Becher, Marcus Watermann, David Shelstad
  • Publication number: 20170322088
    Abstract: A device for determining the temperature of a road building material applied by a construction machine in a placement width includes an infrared temperature measuring head, a motor and a controller. The infrared temperature measuring head is arranged to be twistable by the motor in a manner transverse to the direction of travel of the construction machine so as to scan the surface of the road building material to capture temperature measuring values of the surface of road building material during a rotational movement at a plurality of measuring points spaced apart from one another. The controller is configured to set a scanning speed as a function of a position of the measuring point.
    Type: Application
    Filed: May 1, 2017
    Publication date: November 9, 2017
    Inventors: Dominik BECHER, Marcus WATERMANN, David SHELSTAD
  • Publication number: 20140086684
    Abstract: A device for detecting the temperature of an asphalt material to be processed by a road finishing machine includes at least one temperature measuring head, the at least one temperature measuring head being integrated into an ultrasonic sensor for detecting the filling level of the asphalt material.
    Type: Application
    Filed: September 25, 2013
    Publication date: March 27, 2014
    Applicant: MOBA Mobile Automation AG
    Inventors: Willibald SEHR, David SHELSTAD