Patents by Inventor Jan Dersjö

Jan Dersjö 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: 20220178112
    Abstract: The invention relates to a method of controlling a working machine. The method includes monitoring a detection region behind the working machine by means of a rear detection device; and determining whether the working machine is traveling forward or in reverse. The method further includes disregarding an object in the detection region detected by the rear detection device when the working machine is traveling forward. The invention also relates to a control system for controlling a working machine having a rear detection device arranged to monitor a detection region behind the working machine. The invention also relates to a working machine.
    Type: Application
    Filed: December 7, 2021
    Publication date: June 9, 2022
    Inventors: Björn BRATTBERG, Mikael LINDBERG, Lars ARKEBORN, Jan DERSJÖ, Erik LJUNGARS
  • Patent number: 10781915
    Abstract: A method is provided for controlling a gear shift from a forward gear to a reverse gear in a transmission arrangement, the method including the steps of: positioning a first locking mechanism and a first connecting mechanism at least in a partially engaged state for reducing a rotational speed of a planet carrier of a second planetary gear set; and positioning a second locking mechanism in an engaged state when a rotational speed of the planet carrier of the second planetary gear set is below a predetermined threshold limit.
    Type: Grant
    Filed: July 10, 2015
    Date of Patent: September 22, 2020
    Assignee: Volvo Construction Equipment AB
    Inventors: Jan Dersjö, Per Mattsson, Johnny Arne
  • Patent number: 10584772
    Abstract: A transmission arrangement for a vehicle includes a first, a second, a third, and a fourth planetary gear set including a sun gear, a planet carrier and a ring gear, respectively, wherein the transmission arrangement further includes a transmission housing, an input shaft and an output shaft, wherein the sun gear of the first planetary gear set and the input shaft are operatively connected to each other; the ring gear of the first planetary gear set and the ring gear of the second planetary gear set are operatively connected to each other; the planet carrier of the second planetary gear set and the sun gear of the third planetary gear set are operatively connected to each other; the sun gear of the second planetary gear set and the planet carrier of the third planetary gear set are operatively connected to each other; the planet carrier of the third planetary gear set and the ring gear of the fourth planetary gear set are operatively connected to each other; and the planet carrier of the fourth planetary gear
    Type: Grant
    Filed: September 9, 2015
    Date of Patent: March 10, 2020
    Assignee: VOLVO CONSTRUCTION EQUIPMENT AB
    Inventors: Jan Dersjö, Per Mattsson, Mathias Lehikoinen, Mats Åkerblom, Jörg Müller, Mirko Leesch, Rico Resch
  • Patent number: 10584771
    Abstract: A transmission arrangement for a vehicle includes a first, a second, a third, and a fourth planetary gear set including a sun gear, a planet carrier and a ring gear, respectively, wherein the transmission arrangement further includes a transmission housing, an input shaft and an output shaft, wherein the ring gear of the first planetary gear set and the input shaft are operatively connected to each other; the sun gear of the first planetary gear set, and the sun gear of the second planetary gear set are operatively connected to each other; the planet carrier of the second planetary gear set and the ring gear of the third planetary gear set are operatively connected to each other; the planet carrier of the third planetary gear set is operatively connected to the transmission housing; the sun gear of the third planetary gear set and the sun gear of the fourth planetary gear set are operatively connected to each other; and the planet carrier of the fourth planetary gear set and the output shaft are operatively c
    Type: Grant
    Filed: September 9, 2015
    Date of Patent: March 10, 2020
    Assignee: VOLVO CONSTRUCTION EQUIPMENT AB
    Inventors: Jan Dersjö, Per Mattsson, Mathias Lehikoinen, Mats Åkerblom, Jörg Müller, Mirko Leesch, Rico Resch
  • Patent number: 10533641
    Abstract: A transmission arrangement for a vehicle includes a first, a second, a third, and a fourth planetary gear set including a sun gear, a planet carrier and a ring gear, respectively, wherein the transmission arrangement further includes a transmission housing, an input shaft and an output shaft, wherein two of the sun gear, the planet carrier and the ring gear of the fourth planetary gear set are each operatively connected to a respective one of the input shaft, the sun gear, the planet carrier and the ring gear of the third planetary gear set.
    Type: Grant
    Filed: July 10, 2015
    Date of Patent: January 14, 2020
    Assignee: VOLVO CONSTRUCTION EQUIPMENT AB
    Inventors: Jan Dersjö, Per Mattsson, Mathias Lehikoinen, Mats Åkerblom, Jörg Müller, Mirko Leesch, Rico Resch
  • Patent number: 10495188
    Abstract: A transmission arrangement for a vehicle includes a first, a second, a third, and a fourth planetary gear set including a sun gear, a planet carrier and a ring gear, respectively, wherein the transmission arrangement further includes a transmission housing, an input shaft and an output shaft, wherein the ring gear of the first planetary gear set and the input shaft are operatively connected to each other; the planet carrier of the first planetary gear set and the planet carrier of the second planetary gear set are operatively connected to each other; the sun gear of the first planetary gear set and the ring gear of the third planetary gear set are operatively connected to each other; the ring gear of the second planetary gear set and the planet carrier of the third planetary gear set are operatively connected to each other; the planet carrier of the third planetary gear set and the sun gear of the fourth planetary gear set are operatively connected to each other; and the planet carrier of the fourth planetary
    Type: Grant
    Filed: September 9, 2015
    Date of Patent: December 3, 2019
    Assignee: Volvo Construction Equipment AB
    Inventors: Jan Dersjö, Per Mattsson, Mathias Lehikoinen, Mats Akerblom, Jörg Müller, Mirko Leesch, Rico Resch
  • Publication number: 20180259041
    Abstract: A transmission arrangement for a vehicle includes a first, a second, a third, and a fourth planetary gear set including a sun gear, a planet carrier and a ring gear, respectively, wherein the transmission arrangement further includes a transmission housing, an input shaft and an output shaft, wherein the ring gear of the first planetary gear set and the input shaft are operatively connected to each other; the planet carrier of the first planetary gear set and the planet carrier of the second planetary gear set are operatively connected to each other; the sun gear of the first planetary gear set and the ring gear of the third planetary gear set are operatively connected to each other; the ring gear of the second planetary gear set and the planet carrier of the third planetary gear set are operatively connected to each other; the planet carrier of the third planetary gear set and the sun gear of the fourth planetary gear set are operatively connected to each other; and the planet carrier of the fourth planetary
    Type: Application
    Filed: September 9, 2015
    Publication date: September 13, 2018
    Applicant: Volvo Construction Equipment AB
    Inventors: Jan DERSJÖ, Per MATTSSON, Mathias LEHIKOINEN, Mats AKERBLOM, Jörg MÜLLER, Mirko LEESCH, Rico RESCH
  • Publication number: 20180245670
    Abstract: A transmission arrangement for a vehicle includes a first, a second, a third, and a fourth planetary gear set including a sun gear, a planet carrier and a ring gear, respectively, wherein the transmission arrangement further includes a transmission housing, an input shaft and an output shaft, wherein the ring gear of the first planetary gear set and the input shaft are operatively connected to each other; the sun gear of the first planetary gear set, and the sun gear of the second planetary gear set are operatively connected to each other; the planet carrier of the second planetary gear set and the ring gear of the third planetary gear set are operatively connected to each other; the planet carrier of the third planetary gear set is operatively connected to the transmission housing, the sun gear of the third planetary gear set and the sun gear of the fourth planetary gear set are operatively connected to each other; and the planet carrier of the fourth planetary gear set and, the output shaft are operatively
    Type: Application
    Filed: September 9, 2015
    Publication date: August 30, 2018
    Applicant: VOLVO CONSTRUCTION EQUIPMENT AB
    Inventors: Jan DERSJÖ, Per MATTSSON, Mathias LEHIKOINEN, Mats ÅKERBLOM, Jörg MÜLLER, Mirko LEESCH, Rico RESCH
  • Publication number: 20180231104
    Abstract: A transmission arrangement for a vehicle includes a first, a second, a third, and a fourth planetary gear set including a sun gear, a planet carrier and a ring gear, respectively, wherein the transmission arrangement further includes a transmission housing, an input shaft and an output shaft, wherein the sun gear of the first planetary gear set and the input shaft are operatively connected to each other; the ring gear of the first planetary gear set and the ring gear of the second planetary gear set are operatively connected to each other; the planet carrier of the second planetary gear set and the sun gear of the third planetary gear set are operatively connected to each other; the sun gear of the second planetary gear set and the planet carrier of the third planetary gear set are operatively connected to each other; the planet carrier of the third planetary gear set and the ring gear of the fourth planetary gear set are operatively connected to each other; and the planet carrier of the fourth planetary gear
    Type: Application
    Filed: September 9, 2015
    Publication date: August 16, 2018
    Applicant: VOLVO CONSTRUCTION EQUIPMENT AB
    Inventors: Jan DERSJÖ, Per MATTSSON, Mathias LEHIKOINEN, Mats AKERBLOM, Jörg MÜLLER, Mirko LEESCH, Rico RESCH
  • Publication number: 20180216728
    Abstract: A method is provided for controlling a gear shift from a forward gear to a reverse gear in a transmission arrangement, the method including the steps of: positioning a first locking mechanism and a first connecting mechanism at least in a partially engaged state for reducing a rotational speed of a planet carrier of a second planetary gear set; and positioning a second locking mechanism in an engaged state when a rotational speed of the planet carrier of the second planetary gear set is below a predetermined threshold limit.
    Type: Application
    Filed: July 10, 2015
    Publication date: August 2, 2018
    Applicant: VOLVO CONSTRUCTION EQUIPMENT AB
    Inventors: Jan DERSJÖ, Per MATTSSON, Johnny ARNE
  • Publication number: 20180202518
    Abstract: A transmission arrangement for a vehicle includes a first, a second, a third, and a fourth planetary gear set including a sun gear, a planet carrier and a ring gear, respectively, wherein the transmission arrangement further includes a transmission housing, an input shaft and an output shaft, wherein the planet carrier of the first planetary gear set and the output shaft are operatively connected to each other; the ring gear of the first planetary gear set and the planet carrier of the second planetary gear set are operatively connected to each other; the sun gear of the first planetary gear set and the sun gear of the second planetary gear set are operatively connected to each other; the ring gear of the second planetary gear set and the planet carrier of the third planetary gear set are operatively connected to each other; and two of the sun gear, the planet carrier and the ring gear of the fourth planetary gear set are each operatively connected to a respective one of the input shaft, the sun gear, the pla
    Type: Application
    Filed: July 10, 2015
    Publication date: July 19, 2018
    Applicant: VOLVO CONSTRUCTION EQUIPMENT AB
    Inventors: Jan DERSJÖ, Per MATTSSON, Mathias LEHIKOINEN, Mats AKERBLOM, Jörg MÜLLER, Mirko LEESCH, Rico RESCH
  • Patent number: 8467943
    Abstract: A method is provided for controlling a work machine during operation in a repeated work cycle including the steps of establishing a control strategy on the basis of at least one condition that varies in the course of the work cycle, and controlling at least one device in a work machine power transmission system in response to the established control strategy.
    Type: Grant
    Filed: May 10, 2007
    Date of Patent: June 18, 2013
    Assignee: Volvo Construction Equipment AB
    Inventors: Jan Dersjö, Björn Brattberg
  • Publication number: 20100131122
    Abstract: A method is provided for controlling a work machine during operation in a repeated work cycle including the steps of establishing a control strategy on the basis of at least one condition that varies in the course of the work cycle, and controlling at least one device in a work machine power transmission system in response to the established control strategy.
    Type: Application
    Filed: May 10, 2007
    Publication date: May 27, 2010
    Applicant: VOLVO CONSTRUCTION EQUIPMENT AB
    Inventors: Jan Dersjö, Björn Brattberg