Patents by Inventor Matthias Retsch

Matthias Retsch 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: 11585431
    Abstract: A transmission includes a first oil reservoir and a second oil reservoir. The first oil reservoir, in an installed position, lies underneath the second oil reservoir. The first oil reservoir and the second oil reservoir are connected via a connection line. The connection line is configured to open or close depending on an oil level in the first oil reservoir. A related motor vehicle is also provided.
    Type: Grant
    Filed: August 2, 2017
    Date of Patent: February 21, 2023
    Assignee: ZF FRIEDRICHSHAFEN AG
    Inventors: Andreas Fleischmann, Matthias Retsch
  • Patent number: 11221069
    Abstract: An engagement device (1) for a transmission (G), the engagement device (1) including a gear shift sleeve (S) arranged between a first idler gear (LR1) associated with a shaft (W) of the transmission (G) and a second idler gear (LR2) arranged coaxially to the shaft (W). By displacing the gear shift sleeve (S) towards the first idler gear (LR1), a rotationally fixed connection between the shaft (W) and the first idler gear (LR1) can be established. By displacing the gear shift sleeve (S) towards the second idler gear (LR2), a rotationally fixed connection between the first idler gear (LR1) and the second idler gear (LR2) can be established. The first idler gear (LR1) includes a plurality of axially projecting extensions (F) which extend through openings (A) formed in the gear shift sleeve (S).
    Type: Grant
    Filed: September 12, 2018
    Date of Patent: January 11, 2022
    Assignee: ZF FRIEDRICHSHAFEN AG
    Inventor: Matthias Retsch
  • Publication number: 20200182347
    Abstract: A transmission includes a first oil reservoir and a second oil reservoir. The first oil reservoir, in an installed position, lies underneath the second oil reservoir. The first oil reservoir and the second oil reservoir are connected via a connection line. The connection line is configured to open or close depending on an oil level in the first oil reservoir. A related motor vehicle is also provided.
    Type: Application
    Filed: August 2, 2017
    Publication date: June 11, 2020
    Inventors: Andreas Fleischmann, Matthias Retsch
  • Publication number: 20190078686
    Abstract: An engagement device (1) for a transmission (G), the engagement device (1) including a gear shift sleeve (S) arranged between a first idler gear (LR1) associated with a shaft (W) of the transmission (G) and a second idler gear (LR2) arranged coaxially to the shaft (W). By displacing the gear shift sleeve (S) towards the first idler gear (LR1), a rotationally fixed connection between the shaft (W) and the first idler gear (LR1) can be established. By displacing the gear shift sleeve (S) towards the second idler gear (LR2), a rotationally fixed connection between the first idler gear (LR1) and the second idler gear (LR2) can be established. The first idler gear (LR1) includes a plurality of axially projecting extensions (F) which extend through openings (A) formed in the gear shift sleeve (S).
    Type: Application
    Filed: September 12, 2018
    Publication date: March 14, 2019
    Inventor: Matthias Retsch
  • Patent number: 9477254
    Abstract: A shift safety device for a manual transmission having a gear shift shaft that rotates to select shift gates and moves to shift gears. The device has a blocking element which, during selector motion towards a shift gate, is driven by the gear shift shaft, against a spring, from a starting position into a blocked position, in which the device blocks further selector motion of the gearshift shaft, and which, during subsequent shifting motion of the gearshift shaft, is released and returned back to the starting position, by the spring, thereby permitting further selector motion. A driver arm, disposed on the gear shift shaft, moves the blocking element tangential to the arc traversed during selector motion by the driver arm between the starting and blocking positions. The blocking element moves in the linear track traversed during shifting of the driver arm and is pretensioned toward the starting and center positions.
    Type: Grant
    Filed: February 8, 2013
    Date of Patent: October 25, 2016
    Assignee: ZF Friedrichshafen AG
    Inventor: Matthias Retsch
  • Patent number: 8733200
    Abstract: A shifting device of a transmission comprises a selector interlock which can prevent a gear shift shaft from moving into an outer shift gate. The interlock comprises a locking ring which is axially and rotationally movably supported by the shaft. The ring has a stop surface with a tooth and a locking surface and is held by a spring in a rest position. A stop surface of the shaft abuts the tooth when the shaft is moved toward the outer shift gate, before reaching the second inner shift gate. The locking surface of the ring abuts a housing locking surface when the shaft reaches the next shift gate by further displacement of the shaft. The tooth of the ring engages in a recess when the shaft ring rotates to a gear shift position in the next inner shift gate.
    Type: Grant
    Filed: July 7, 2010
    Date of Patent: May 27, 2014
    Assignee: ZF Friedrichshafen AG
    Inventor: Matthias Retsch
  • Patent number: 8272287
    Abstract: A device for latching and locking of shift rockers (1, 1?) of a shift device of a transmission. The device has a lock part (3, 3?), for each shift rocker (1, 1?), which resides in a receptacle (2) of the shift rocker (1, 1?), which interacts with a lock contour (5, 5?), positioned in a non-moving area of the transmission, for the latching purpose, whereby the lock part (3, 3?) also serves, in addition to the latching, as an interlock for the shift rocker (1, 1?).
    Type: Grant
    Filed: September 11, 2008
    Date of Patent: September 25, 2012
    Assignee: ZF Friedrichshafen AG
    Inventors: Michael Drabek, Matthias Retsch
  • Publication number: 20120096972
    Abstract: A shifting device of a transmission comprises a selector interlock which can prevent a gear shift shaft from moving into an outer shift gate. The interlock comprises a locking ring which is axially and rotationally movably supported by the shaft. The ring has a stop surface with a tooth and a locking surface and is held by a spring in a rest position. A stop surface of the shaft abuts the tooth when the shaft is moved toward the outer shift gate, before reaching the second inner shift gate. The locking surface of the ring abuts a housing locking surface when the shaft reaches the next shift gate by further displacement of the shaft. The tooth of the ring engages in a recess when the shaft ring rotates to a gear shift position in the next inner shift gate.
    Type: Application
    Filed: July 7, 2010
    Publication date: April 26, 2012
    Applicant: ZF FRIEDRICHSHAFEN AG
    Inventor: Matthias Retsch
  • Publication number: 20110048155
    Abstract: A device is proposed for latching and locking of shift rockers (1, 1?) of a shift device of a transmission. The device has a lock part (3, 3?), for each shift rocker (1, 1?), which resides in a receptacle (2) of the shift rocker (1, 1?), which interacts with a lock contour (5, 5?), positioned in a non-moving area of the transmission, for the latching purpose, whereby the lock part (3, 3?) also serves, in addition to the latching, as an interlock for the shift rocker (1, 1?).
    Type: Application
    Filed: September 11, 2008
    Publication date: March 3, 2011
    Applicant: ZF FRIEDRICHSHAFEN AG
    Inventors: Michael Drabek, Matthias Retsch