Patents by Inventor DEAN H. LEHRKE

DEAN H. LEHRKE 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).

  • Strain torque measurement system
    Patent number: 11614373
    Abstract: A torque sensor assembly is used with a driveline component. The torque sensor assembly includes a holder, a sleeve, and at least one strain sensor. The holder includes a side wall that has a holder outer surface and a holder inner surface. The holder outer surface is corresponding to and attached to an aperture of the driveline component. The sleeve is corresponding to and attached to the holder inner surface. The strain sensor is attached to a sleeve inner surface of the sleeve and used to sense a strain in the driveline component.
    Type: Grant
    Filed: May 25, 2021
    Date of Patent: March 28, 2023
    Assignee: DEERE & COMPANY
    Inventors: Steven R. Whiteman, Jonathan D. Forster, Dean H. Lehrke, Stacy K. Worley
  • Axle assembly with torque sensor
    Patent number: 11441655
    Abstract: A torque sensing assembly of a differential of an axle assembly is shown in the present disclosure. The differential may include a differential housing portion, a drive pinion positioned within the differential housing portion, a ring gear, a carrier, a differential pinion, a first side gear, a second side gear, a first bearing, a first bearing support, and the torque sensing assembly. The first bearing is coupled to the differential housing portion and rotatable with the carrier. The first bearing support is coupled to the differential housing portion and used to support the first bearing. The torque sensing assembly is coupled to the first bearing support and operable to measure a strain thereof resulted from a separation force created between the drive pinion and ring gear.
    Type: Grant
    Filed: November 11, 2020
    Date of Patent: September 13, 2022
    Assignee: DEERE & COMPANY
    Inventors: Steven R. Whiteman, Dean H. Lehrke
  • STRAIN TORQUE MEASUREMENT SYSTEM
    Publication number: 20210278297
    Abstract: A torque sensor assembly is used with a driveline component. The torque sensor assembly includes a holder, a sleeve, and at least one strain sensor. The holder includes a side wall that has a holder outer surface and a holder inner surface. The holder outer surface is corresponding to and attached to an aperture of the driveline component. The sleeve is corresponding to and attached to the holder inner surface. The strain sensor is attached to a sleeve inner surface of the sleeve and used to sense a strain in the driveline component.
    Type: Application
    Filed: May 25, 2021
    Publication date: September 9, 2021
    Inventors: STEVEN R. WHITEMAN, JONATHAN D. FORSTER, DEAN H. LEHRKE, STACY K. WORLEY
  • Strain torque measurement system
    Patent number: 11099088
    Abstract: A torque sensor assembly is used with a driveline component. The torque sensor assembly includes a holder, a sleeve, and at least one strain sensor. The holder includes a side wall that has a holder outer surface and a holder inner surface. The holder outer surface is corresponding to and attached to an aperture of the driveline component. The sleeve is corresponding to and attached to the holder inner surface. The strain sensor is attached to the sleeve and used to sense a strain in the driveline component.
    Type: Grant
    Filed: December 21, 2018
    Date of Patent: August 24, 2021
    Assignee: DEERE & COMPANY
    Inventors: Steven R. Whiteman, Jonathan D. Forster, Dean H. Lehrke, Stacy K. Worley
  • Axle Assembly with Torque Sensor
    Publication number: 20210190190
    Abstract: A torque sensing assembly of a differential of an axle assembly is shown in the present disclosure. The differential may include a differential housing portion, a drive pinion positioned within the differential housing portion, a ring gear, a carrier, a differential pinion, a first side gear, a second side gear, a first bearing, a first bearing support, and the torque sensing assembly. The first bearing is coupled to the differential housing portion and rotatable with the carrier. The first bearing support is coupled to the differential housing portion and used to support the first bearing. The torque sensing assembly is coupled to the first bearing support and operable to measure a strain thereof resulted from a separation force created between the drive pinion and ring gear.
    Type: Application
    Filed: November 11, 2020
    Publication date: June 24, 2021
    Inventors: STEVEN R. WHITEMAN, DEAN H. LEHRKE
  • STRAIN TORQUE MEASUREMENT SYSTEM
    Publication number: 20200200626
    Abstract: A torque sensor assembly is used with a driveline component. The torque sensor assembly includes a holder, a sleeve, and at least one strain sensor. The holder includes a side wall that has a holder outer surface and a holder inner surface. The holder outer surface is corresponding to and attached to an aperture of the driveline component. The sleeve is corresponding to and attached to the holder inner surface. The strain sensor is attached to the sleeve and used to sense a strain in the driveline component.
    Type: Application
    Filed: December 21, 2018
    Publication date: June 25, 2020
    Inventors: STEVEN R. WHITEMAN, JONATHAN D. FORSTER, DEAN H. LEHRKE, STACY K. WORLEY