Patents by Inventor JENS LETSCHER

JENS LETSCHER 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: 20230311796
    Abstract: A device for maintaining a hydraulic supply of a utility vehicle includes a hydraulic pump, which is adjustable in terms of its delivery volume via a pressure control inlet, for feeding hydraulic fluid to a hydraulic circuit, a pressure accumulator that can be charged from the hydraulic circuit via a check valve, a pressure connection between the hydraulic circuit and the pressure control inlet of the hydraulic pump being producible via a sensor line by means of a charging valve, and a supply connection between the pressure accumulator and the hydraulic circuit being producible by means of a discharging valve, by virtue of the check valve being bypassed.
    Type: Application
    Filed: March 30, 2023
    Publication date: October 5, 2023
    Inventor: JENS LETSCHER
  • Publication number: 20230226901
    Abstract: A power-split axle drive for an agricultural vehicle including a first additional drive element, a first vehicle axle, a second vehicle axle, and a primary drive element for providing a torque which via a first shaft is able to be transmitted to a primary transmission. The primary transmission is connected to the second vehicle axle, and at least the second vehicle axle via the primary transmission is able to be driven by the torque of the primary drive element. The power-split axle drive includes a power-splitting transmission. The power-splitting transmission via a first gear set is connected to the second vehicle axle and the primary transmission and via a second shaft is connected to the first vehicle axle. The first additional drive element via a first switching element is able to be connected to the power-splitting transmission.
    Type: Application
    Filed: October 24, 2022
    Publication date: July 20, 2023
    Inventors: RAINER GUGEL, DAVID MUELLER, JENS LETSCHER
  • Publication number: 20230226902
    Abstract: A power-split axle drive for an agricultural vehicle, including a first additional drive element, a first vehicle axle, a second vehicle axle, and a primary drive element for providing a torque which via a first shaft is able to be transmitted to a primary transmission. The primary transmission is connected to the second vehicle axle, and at least the second vehicle axle via the primary transmission is drivable by the torque of the primary drive element. The power-split axle drive has a power-splitting transmission connected to the second vehicle axle and the primary transmission and via a second shaft is connected to the first vehicle axle. The first additional drive element is able to be connected to the power-splitting transmission, wherein a first switching element is disposed on the second shaft.
    Type: Application
    Filed: October 24, 2022
    Publication date: July 20, 2023
    Inventors: JENS LETSCHER, Axel Flemming, DECHO BOTEV
  • Patent number: 11617292
    Abstract: A method is provided for controlling the operation of an attachment that is coupled to a tractor via a top link and two bottom links of a powerlift. The method includes selecting a point of action from at least one of a pull point as a geometric intersection of imaginary extensions of both bottom links and a pole point as a geometric intersection of imaginary extensions of the top link and a bottom link. The method also includes determining a position of the selected point of action, and signaling the determined position of the point of action by a display unit or adjusting the determined position depending on a comparison with a setpoint setting.
    Type: Grant
    Filed: April 1, 2020
    Date of Patent: April 4, 2023
    Assignee: DEERE & COMPANY
    Inventors: Jens Letscher, Florian Reinmuth
  • Patent number: 11558992
    Abstract: A coupling device for attaching a power lift of a tractor to an attachment includes a link mounting region having coupling units for the articulation of an upper link and two lower links of the power lift, and an apparatus mounting region for fixing the attachment. A coupling unit assigned to the upper link is movable in a translatory manner in a vertical direction running perpendicular to a transverse direction. The coupling units are movably disposed on a device base of the coupling device, and the coupling units assigned to the two lower links are movable in a translatory manner in the transverse direction.
    Type: Grant
    Filed: April 24, 2020
    Date of Patent: January 24, 2023
    Assignee: DEERE & COMPANY
    Inventors: Jens Letscher, Florian Reinmuth
  • Patent number: 11339554
    Abstract: A method is provided for controlling engine speed of a drive engine of a utility vehicle having a drivable loading apparatus. The method includes detecting or predicting a driving movement of the loading apparatus, and requesting an increase of engine speed if the movement of the loading apparatus is predicted or detected.
    Type: Grant
    Filed: April 5, 2018
    Date of Patent: May 24, 2022
    Assignee: DEERE & COMPANY
    Inventors: Jens Letscher, Florian Reinmuth, Florian Schott
  • Patent number: 11186326
    Abstract: A ballasting device for an agricultural vehicle includes a ballasting body, a first ballasting arm, and a second ballasting arm. The first ballasting arm is pivotally mounted on the ballasting body about a first bearing axis on one end and a first ballasting weight is arranged at the other end thereof. The second ballasting arm is pivotally mounted on the ballasting body about a second bearing axis at one end and a second ballasting weight is arranged at the other end thereof. The ballasting device includes a receiving device for receiving the ballasting device via a three-point hitch device of the agricultural vehicle. The first ballasting weight is adjustable by the first ballasting arm and the second ballasting weight is adjustable by the second ballasting arm.
    Type: Grant
    Filed: October 4, 2019
    Date of Patent: November 30, 2021
    Assignee: DEERE & COMPANY
    Inventors: Jens Letscher, Thorben Riemer
  • Patent number: 11105464
    Abstract: A device for supplying lubricant to a vehicle system includes a lubricant pump for supplying fluid from a lubricant reservoir and a lubricant distributor having a plurality of individually drivable supply valves configured for injecting a lubricant into lubricating points of associated operating components. The device also includes a controlling device for operably controlling the supply valves to lubricate the operating components based upon a lubricant demand or lubricant consumption related to operational information of the operating components.
    Type: Grant
    Filed: June 25, 2017
    Date of Patent: August 31, 2021
    Assignee: DEERE & COMPANY
    Inventors: Jens Letscher, Florian Reinmuth
  • Patent number: 10899170
    Abstract: An additional wheel weight for a utility vehicle includes a weight plate and a retention member configured to be fitted to a wheel and on which the weight plate is guided in a longitudinally axial manner. A clamping lever closure is disposed between the weight plate and retention member. A first assembly element of the clamping lever closure is coupled to the retention member, a second assembly element of the clamping lever closure engages the weight plate in a longitudinally axial manner, and a lever mechanism is disposed between the first and second assembly elements. The lever mechanism includes a clamping element being releasably secured to the first assembly element and an actuation lever being articulated between the second assembly element and the clamping element.
    Type: Grant
    Filed: June 1, 2018
    Date of Patent: January 26, 2021
    Assignee: DEERE & COMPANY
    Inventors: Jens Letscher, Xaver Witzelsperger, Michael Schmid, Verena Schmeller
  • Patent number: 10875589
    Abstract: A device for influencing vertical dynamics of an agricultural vehicle includes a mass mounted on the agricultural vehicle, a positioning system for controlling movement of the mass in vertical direction, a sensor device configured to detect a surface profile of an upcoming vehicle path segment, and an electronic control unit adapted to calculate an expected disturbance input for the upcoming vehicle path segment based on the detected surface profile. The electronic control unit operably controls the positioning system to execute a compensation movement of the vehicle that reduces the expected disturbance input by means of the mass.
    Type: Grant
    Filed: December 7, 2017
    Date of Patent: December 29, 2020
    Assignee: DEERE & COMPANY
    Inventors: Jens Letscher, J├╝rgen Hollstein, Christian von Holst
  • Publication number: 20200352084
    Abstract: A coupling device for attaching a power lift of a tractor to an attachment includes a link mounting region having coupling units for the articulation of an upper link and two lower links of the power lift, and an apparatus mounting region for fixing the attachment. A coupling unit assigned to the upper link is movable in a translatory manner in a vertical direction running perpendicular to a transverse direction. The coupling units are movably disposed on a device base of the coupling device, and the coupling units assigned to the two lower links are movable in a translatory manner in the transverse direction.
    Type: Application
    Filed: April 24, 2020
    Publication date: November 12, 2020
    Inventors: JENS LETSCHER, FLORIAN REINMUTH
  • Patent number: 10807410
    Abstract: An add-on wheel weight for a work machine that includes a weight disc and a mounting configured to attach to a wheel rim. The weight disc includes a closure mechanism that may be actuated manually or by outside force. The closure mechanism has an axially running guide opening configured to receive a coupling element associated with the mounting and has a releasable locking element for latching the coupling element inside the guide opening.
    Type: Grant
    Filed: March 28, 2018
    Date of Patent: October 20, 2020
    Assignee: DEERE & COMPANY
    Inventors: Jens Letscher, Jana Suttrup
  • Publication number: 20200324594
    Abstract: A method is provided for controlling the operation of an attachment that is coupled to a tractor via a top link and two bottom links of a powerlift. The method includes selecting a point of action from at least one of a pull point as a geometric intersection of imaginary extensions of both bottom links and a pole point as a geometric intersection of imaginary extensions of the top link and a bottom link. The method also includes determining a position of the selected point of action, and signaling the determined position of the point of action by a display unit or adjusting the determined position depending on a comparison with a setpoint setting.
    Type: Application
    Filed: April 1, 2020
    Publication date: October 15, 2020
    Inventors: Jens LETSCHER, Florian REINMUTH
  • Publication number: 20200114989
    Abstract: A ballasting device for an agricultural vehicle includes a ballasting body, a first ballasting arm, and a second ballasting arm. The first ballasting arm is pivotally mounted on the ballasting body about a first bearing axis on one end and a first ballasting weight is arranged at the other end thereof. The second ballasting arm is pivotally mounted on the ballasting body about a second bearing axis at one end and a second ballasting weight is arranged at the other end thereof. The ballasting device includes a receiving device for receiving the ballasting device via a three-point hitch device of the agricultural vehicle. The first ballasting weight is adjustable by the first ballasting arm and the second ballasting weight is adjustable by the second ballasting arm.
    Type: Application
    Filed: October 4, 2019
    Publication date: April 16, 2020
    Inventors: JENS LETSCHER, THORBEN RIEMER
  • Publication number: 20180345721
    Abstract: An additional wheel weight for a utility vehicle includes a weight plate and a retention member configured to be fitted to a wheel rim and on which the weight plate is guided in a longitudinally axial manner. A clamping lever closure is disposed between the weight plate and retention member. A first assembly element of the clamping lever closure is coupled to the retention member, a second assembly element of the clamping lever closure engages the weight plate in a longitudinally axial manner, and a lever mechanism is disposed between the first and second assembly elements. The lever mechanism includes a clamping element being releasably secured to the first assembly element and an actuation lever being articulated between the second assembly element and the clamping element.
    Type: Application
    Filed: June 1, 2018
    Publication date: December 6, 2018
    Inventors: Jens Letscher, Xaver Witzelsperger, Michael Schmid, Verena Schmeller
  • Publication number: 20180305900
    Abstract: A method is provided for controlling engine speed of a drive engine of a utility vehicle having a drivable loading apparatus. The method includes detecting or predicting a driving movement of the loading apparatus, and requesting an increase of engine speed if the movement of the loading apparatus is predicted or detected.
    Type: Application
    Filed: April 5, 2018
    Publication date: October 25, 2018
    Inventors: Jens Letscher, Florian Reinmuth, Florian Schott
  • Publication number: 20180281512
    Abstract: An add-on wheel weight for a work machine that includes a weight disc and a mounting configured to attach to a wheel rim. The weight disc includes a closure mechanism that may be actuated manually or by outside force. The closure mechanism has an axially running guide opening configured to receive a coupling element associated with the mounting and has a releasable locking element for latching the coupling element inside the guide opening.
    Type: Application
    Filed: March 28, 2018
    Publication date: October 4, 2018
    Inventors: Jens Letscher, Jana Suttrup, SR.
  • Publication number: 20180162462
    Abstract: A device for influencing vertical dynamics of an agricultural vehicle includes a mass mounted on the agricultural vehicle, a positioning system for controlling movement of the mass in vertical direction, a sensor device configured to detect a surface profile of an upcoming vehicle path segment, and an electronic control unit adapted to calculate an expected disturbance input for the upcoming vehicle path segment based on the detected surface profile. The electronic control unit operably controls the positioning system to execute a compensation movement of the vehicle that reduces the expected disturbance input by means of the mass.
    Type: Application
    Filed: December 7, 2017
    Publication date: June 14, 2018
    Inventors: Jens Letscher, Jurgen Hollstein, Christian von Holst
  • Publication number: 20180017210
    Abstract: A device for supplying lubricant to a vehicle system includes a lubricant pump for supplying fluid from a lubricant reservoir and a lubricant distributor having a plurality of individually drivable supply valves configured for injecting a lubricant into lubricating points of associated operating components. The device also includes a controlling device for operably controlling the supply valves to lubricate the operating components based upon a lubricant demand or lubricant consumption related to operational information of the operating components.
    Type: Application
    Filed: June 25, 2017
    Publication date: January 18, 2018
    Inventors: JENS LETSCHER, FLORIAN REINMUTH