Patents by Inventor Stefan Raisch

Stefan Raisch 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: 11313445
    Abstract: A transmission includes a first and a second shaft, a shift group arranged between the first and the second shafts, and a first and second power path. The shift group has at least two individually shiftable transmission units which differ from one another relative to the gear ratio thereof. A planetary stage is arranged between the shift group and the first shaft, and the planetary stage is configured such that a mechanical power introduced via the first shaft is transmittable to the second shaft via the second power path. At least one transmission unit of the shift group is assigned to each power path, and in at least one shifting state of the shift group, the flow of power runs via at least one respective transmission unit of the first and the second power path. The planetary stage includes at least three planetary units.
    Type: Grant
    Filed: October 8, 2020
    Date of Patent: April 26, 2022
    Assignee: DEERE & COMPANY
    Inventor: Stefan Raisch
  • Publication number: 20220074483
    Abstract: An oil management system for a vehicle includes a differential housing, a transmission housing, a lubricant tank, a suction line, a lubricant pump, and an air suction pump. The transmission housing is connected to the differential housing in an air-tight manner, and a lubricant through-passage is defined between the transmission housing and the differential housing. The lubricant tank is provided in the differential housing and has a lubricant suction opening in a lower region. The lubricant pump conveys lubricant from the lubricant tank through the suction line and conducts the lubricant to the lubrication points in the differential housing and the transmission housing. The air suction pump pumps air from the lubricant tank into the transmission housing so that an excess air pressure is maintained in the transmission housing.
    Type: Application
    Filed: August 30, 2021
    Publication date: March 10, 2022
    Inventors: MATTHIAS LANG, DAVID MUELLER, RAINER GUGEL, STEFAN RAISCH, CHRISTOPH EISENHARDT
  • Publication number: 20220074486
    Abstract: A transmission lubrication system for a vehicle providing a continuous return flow of a lubricant. The transmission lubrication system includes a differential housing, a transmission housing, a lubricant tank, a suction line, a lubricant pump, and an air suction pump. The transmission housing is connected to the differential housing in an air-tight manner and a lubricant through-passage is provided between the transmission housing and the differential housing. The lubricant tank is provided in the differential housing and has a lubricant suction opening in a lower region. The lubricant pump conveys lubricant from the lubricant tank through the suction line and conducts the lubricant to the lubrication points in the differential housing and transmission housing. The air suction pump pumps air from the lubricant tank into the transmission housing so that an excess air pressure is maintained in the transmission housing.
    Type: Application
    Filed: August 17, 2021
    Publication date: March 10, 2022
    Inventor: STEFAN RAISCH
  • Patent number: 11209075
    Abstract: A transmission includes a first shaft, and a second shaft, and a shifting group arranged between the first and second shafts. The shifting group is configured such that a mechanical power transmitted via the first shaft is transmitted to the second shaft via a first power path or a second power path which is coupled-in or coupled-out. The first power path is designed as a forward gear and the second power path is designed as a reverse gear. The forward gear includes a different transmission ratio in magnitude from the reverse gear. The shifting group includes a summation planetary stage, where the mechanical power of the power paths is transmitted thereby to the second shaft.
    Type: Grant
    Filed: June 30, 2020
    Date of Patent: December 28, 2021
    Assignee: DEERE & COMPANY
    Inventor: Stefan Raisch
  • Publication number: 20210394613
    Abstract: A transmission subassembly for a working vehicle includes an engageable front wheel drive, a transmission housing, a clutch module, and a hydraulic module. The hydraulic module is received between the clutch module and the transmission housing.
    Type: Application
    Filed: March 23, 2021
    Publication date: December 23, 2021
    Inventors: JOSEF PETERS, CHRISTOPH EISENHARDT, STEFAN RAISCH, THOMAS BUSOLD, CLAYTON P. NEUMANN
  • Patent number: 11187310
    Abstract: A gear mechanism includes at least a first and a second shaft, and at least a first and a second switching group arranged between the first and the second shafts. Each of the switching groups includes at least two transmission units which are individually switched and have a different transmission ratio. The first switching group is movable into active connection with the first shaft by a planetary stage which is constructed such that a mechanical power which is introduced via the first shaft is transmitted to the second shaft via a first or a second power path. At least one transmission unit of the first switching group is associated with each power path and in at least one switching state of the first switching group, the power flow extends over at least one transmission unit of the first and the second power path.
    Type: Grant
    Filed: October 12, 2020
    Date of Patent: November 30, 2021
    Assignee: DEERE & COMPANY
    Inventors: Christoph Eisenhardt, Stefan Raisch
  • Publication number: 20210123510
    Abstract: A transmission includes a first and a second shaft, a shift group arranged between the first and the second shafts, and a first and second power path. The shift group has at least two individually shiftable transmission units which differ from one another relative to the gear ratio thereof. A planetary stage is arranged between the shift group and the first shaft, and the planetary stage is configured such that a mechanical power introduced via the first shaft is transmittable to the second shaft via the second power path. At least one transmission unit of the shift group is assigned to each power path, and in at least one shifting state of the shift group, the flow of power runs via at least one respective transmission unit of the first and the second power path. The planetary stage includes at least three planetary units.
    Type: Application
    Filed: October 8, 2020
    Publication date: April 29, 2021
    Inventor: STEFAN RAISCH
  • Publication number: 20210123511
    Abstract: A gear mechanism includes at least a first and a second shaft, and at least a first and a second switching group arranged between the first and the second shafts. Each of the switching groups includes at least two transmission units which are individually switched and have a different transmission ratio. The first switching group is movable into active connection with the first shaft by a planetary stage which is constructed such that a mechanical power which is introduced via the first shaft is transmitted to the second shaft via a first or a second power path. At least one transmission unit of the first switching group is associated with each power path and in at least one switching state of the first switching group, the power flow extends over at least one transmission unit of the first and the second power path.
    Type: Application
    Filed: October 12, 2020
    Publication date: April 29, 2021
    Inventors: CHRISTOPH EISENHARDT, STEFAN RAISCH
  • Publication number: 20210123513
    Abstract: A shift group for a power shift transmission includes a branching unit having a planetary stage and a branching coupling assigned to the planetary stage. The branching unit is designed such that a mechanical power is transmitted from a first shaft to a second shaft. A first power path and a second power path are provided. In a first shifting state, the power is transmitted via the first or the second power path, and in a second shifting state, the power is transmitted via both the first and the second power paths. The shift group also includes individually shiftable transmission units each comprising a different transmission ratio, where a first transmission unit is disposed in the first power path and a second and a third transmission unit are disposed in the second power path.
    Type: Application
    Filed: October 8, 2020
    Publication date: April 29, 2021
    Inventor: Stefan Raisch
  • Publication number: 20210025484
    Abstract: A transmission includes a first shaft, and a second shaft, and a shifting group arranged between the first and second shafts. The shifting group is configured such that a mechanical power transmitted via the first shaft is transmitted to the second shaft via a first power path or a second power path which is coupled-in or coupled-out. The first power path is designed as a forward gear and the second power path is designed as a reverse gear. The forward gear includes a different transmission ratio in magnitude from the reverse gear. The shifting group includes a summation planetary stage, where the mechanical power of the power paths is transmitted thereby to the second shaft.
    Type: Application
    Filed: June 30, 2020
    Publication date: January 28, 2021
    Inventor: STEFAN RAISCH
  • Publication number: 20200408282
    Abstract: A shift transmission includes a first shaft, a second shaft arranged parallel to the first shaft, a gear group arranged at least partially on the first shaft, and a range group arranged at least partially on the second shaft. The gear group includes at least two gear units and the range group comprises at least three range units. Moreover, the gear group and the range group are configured such that a first and a second range unit in each case are shiftable with at least one gear unit indirectly by a third range unit.
    Type: Application
    Filed: June 17, 2020
    Publication date: December 31, 2020
    Inventor: Stefan Raisch
  • Publication number: 20200362950
    Abstract: A power shift transmission for an agricultural machine includes a transmission housing, an input shaft unit and an output shaft. The input shaft unit and the output shaft extend at least partially inside the housing. The transmission includes an auxiliary shaft arranged offset but parallel between the input shaft unit and the output shaft inside the housing. The input shaft unit and the auxiliary shaft are connected together via an upstream group, and the auxiliary shaft and the output shaft are connected together via a downstream group. Each of the upstream and downstream shift groups includes gearwheel pairs which may be individually selectively coupled. The input shaft unit includes an outer shaft and an inner shaft which is arranged coaxially in the outer shaft and which is rotatable relative to the outer shaft. The inner shaft and the outer shaft are connected together via a layshaft.
    Type: Application
    Filed: April 29, 2020
    Publication date: November 19, 2020
    Inventor: Stefan Raisch
  • Patent number: 10539207
    Abstract: A transmission arrangement, particularly for an agricultural working vehicle, has a parallel-shift transmission and an input shaft, proceeding from which input shaft a drive power can be distributed via a first and a second shifting element to respective layshafts, and has a first and a second coaxially arranged output shaft, wherein the drive power can be transmitted by each of the layshafts to each of the output shafts as needed, and has a group-shift transmission with multiple shifting groups.
    Type: Grant
    Filed: May 2, 2016
    Date of Patent: January 21, 2020
    Assignee: DEERE & COMPANY
    Inventors: Stefan Raisch, David Mueller
  • Patent number: 10352401
    Abstract: A transmission arrangement, particularly for an agricultural working vehicle, having a parallel-shift transmission with a plurality of gear stages and an input shaft, proceeding from which a drive power can be distributed via a first and a second shifting element to respective layshafts, and an output shaft, wherein the drive power can be transmitted by each of the layshafts to the output shaft as needed, and having a group-shift transmission with a plurality of shifting groups.
    Type: Grant
    Filed: May 2, 2016
    Date of Patent: July 16, 2019
    Assignee: DEERE & COMPANY
    Inventors: Stefan Raisch, David Mueller
  • Patent number: 10247254
    Abstract: A friction clutch assembly includes a friction clutch having at least two coupling elements coupled to each other and disposed axially movable with respect to each other. Immediately adjacent coupling elements are each assigned to two sides of a power path defined by the coupling of the at least two coupling elements. An intermediate element is provided on which the coupling elements of one side of the power path are held movably in an axial direction of the coupling elements. The intermediate element is switchable between a locked state and a free-running state. An actuator element opens and closes the friction clutch. In a free-running state, a free rotation of the held coupling elements with respect to the assigned side of the power path is permitted, and in a locked state the held coupling elements are blocked from free rotation.
    Type: Grant
    Filed: February 27, 2017
    Date of Patent: April 2, 2019
    Assignee: DEERE & COMPANY
    Inventor: Stefan Raisch
  • Patent number: 10240668
    Abstract: A transmission assembly for a drive train of a vehicle for connecting a drive motor to a traction drive of the vehicle, includes a main shift transmission with multiple transmission-ratio stages, wherein multiple shift states of the main shift transmission can be connected by a shifting, as required, by means of shift points of one or more transmission-ratio stages, and a planetary gear, wherein the main shift transmission and the planetary gear are drivingly connected or can be connected as required to each other by means of two connection shafts.
    Type: Grant
    Filed: June 23, 2016
    Date of Patent: March 26, 2019
    Assignee: Deere & Company
    Inventor: Stefan Raisch
  • Publication number: 20170314624
    Abstract: A friction clutch assembly includes a friction clutch having at least two coupling elements coupled to each other and disposed axially movable with respect to each other. Immediately adjacent coupling elements are each assigned to two sides of a power path defined by the coupling of the at least two coupling elements. An intermediate element is provided on which the coupling elements of one side of the power path are held movably in an axial direction of the coupling elements. The intermediate element is switchable between a locked state and a free-running state. An actuator element opens and closes the friction clutch. In a free-running state, a free rotation of the held coupling elements with respect to the assigned side of the power path is permitted, and in a locked state the held coupling elements are blocked from free rotation.
    Type: Application
    Filed: February 27, 2017
    Publication date: November 2, 2017
    Inventor: STEFAN RAISCH
  • Publication number: 20160377155
    Abstract: A transmission assembly for a drive train of a vehicle for connecting a drive motor to a traction drive of the vehicle, includes a main shift transmission with multiple transmission-ratio stages, wherein multiple shift states of the main shift transmission can be connected by a shifting, as required, by means of shift points of one or more transmission-ratio stages, and a planetary gear, wherein the main shift transmission and the planetary gear are drivingly connected or can be connected as required to each other by means of two connection shafts.
    Type: Application
    Filed: June 23, 2016
    Publication date: December 29, 2016
    Inventor: STEFAN RAISCH
  • Publication number: 20160327128
    Abstract: The disclosure relates to a transmission arrangement, particularly for an agricultural working vehicle, having a parallel-shift transmission with a plurality of gear stages and an input shaft, proceeding from which a drive power can be distributed via a first and a second shifting element to respective layshafts, and an output shaft, wherein the drive power can be transmitted by each of the layshafts to the output shaft as needed, and having a group-shift transmission with a plurality of shifting groups.
    Type: Application
    Filed: May 2, 2016
    Publication date: November 10, 2016
    Inventors: STEFAN RAISCH, DAVID MUELLER
  • Publication number: 20160327126
    Abstract: The disclosure relates to a transmission arrangement, particularly for an agricultural working vehicle, having a parallel-shift transmission and an input shaft, proceeding from which input shaft a drive power can be distributed via a first and a second shifting element to respective layshafts, and having a first and a second coaxially arranged output shaft, wherein the drive power can be transmitted by each of the layshafts to each of the output shafts as needed, and having a group-shift transmission with multiple shifting groups.
    Type: Application
    Filed: May 2, 2016
    Publication date: November 10, 2016
    Inventors: STEFAN RAISCH, DAVID MUELLER