Patents by Inventor Steven D. Springer

Steven D. Springer 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: 12643387
    Abstract: A machine may include a frame and a lift system. The lift system may include a lift arm attached to the frame. The lift arm may be configured to actuate between a raised position and a lowered position. The lift system may include a roller attached to the frame. The machine may include a power unit including an energy storage unit and a power unit housing containing the energy storage unit. The power unit housing may include an engagement element configured to engage the power unit housing with the lift arm. The power unit housing may include a cam element, projecting from the power unit housing, configured to slidably engage with the roller during actuation of the lift arm.
    Type: Grant
    Filed: October 20, 2023
    Date of Patent: June 2, 2026
    Assignee: Caterpillar Inc.
    Inventors: Jason Prakash Wigg, Christopher Douglas Carpenter, Thomas Aldridge, Rowan Terry Franks, Travis C. Parker, Matthew Thomas Hansen, Steven D. Springer
  • Publication number: 20250326450
    Abstract: A hitch for a vehicle includes a first side, a second side opposite the first side, a circular opening between the first side and the second side, and a first axis extending perpendicular to the circular opening. The hitch further includes a first articulation stop on the second side of the hitch and extending from the hitch, parallel to the axis, a cavity within the first articulation stop, the cavity defining a floor, and a deformable stopper within the cavity extending away from the floor of the cavity past a distal end of the first articulation stop. The deformable stopper is configured to deform within the cavity.
    Type: Application
    Filed: April 22, 2024
    Publication date: October 23, 2025
    Applicant: Caterpillar Inc.
    Inventors: Shankar SHANMUGAM, Steven D. SPRINGER
  • Publication number: 20250128588
    Abstract: A machine may include a frame and a lift system. The lift system may include a lift arm attached to the frame. The lift arm may be configured to actuate between a raised position and a lowered position. The lift system may include a roller attached to the frame. The machine may include a power unit including an energy storage unit and a power unit housing containing the energy storage unit. The power unit housing may include an engagement element configured to engage the power unit housing with the lift arm. The power unit housing may include a cam element, projecting from the power unit housing, configured to slidably engage with the roller during actuation of the lift arm.
    Type: Application
    Filed: October 20, 2023
    Publication date: April 24, 2025
    Applicant: Caterpillar Underground Mining Pty. Ltd.
    Inventors: Jason Prakash WIGG, Christopher Douglas CARPENTER, Thomas ALDRIDGE, Rowan Terry FRANKS, Travis C. PARKER, Matthew Thomas HANSEN, Steven D. SPRINGER
  • Publication number: 20220029342
    Abstract: A cover assembly for a charging port of an electric machine includes a head plate, a non-metallic base plate, and a flexible membrane. The head plate extends across an opening of an outer panel assembly of the machine to define an aperture. The non-metallic base plate is movable with respect to the head plate to selectively open and close the aperture. The flexible membrane is fixedly coupled to the head plate and slidably engaged to the non-metallic base plate to enable the non-metallic base plate to slide with respect to the head plate and move between a folded state and an unfolded state with respect to the head plate. In the unfolded state, the non-metallic base plate closes the aperture, and, in the folded state, the non-metallic base plate opens the aperture to allow access to the charging port from an outside through the aperture.
    Type: Application
    Filed: July 23, 2020
    Publication date: January 27, 2022
    Applicant: Caterpillar Underground Mining Pty. Ltd.
    Inventors: Steven D. Springer, Nirmal Goldwin
  • Patent number: 10927523
    Abstract: A lift arm for a loader can comprise a pivot end section extending along a first axis and including a first pin hole defining an origin at the intersection of x- and y-axes, a bucket end section extending along a second axis and including a second pin hole located a first distance away from the origin on the y-axis, and a hump section connecting the pivot and bucket end sections comprising a lifting cylinder coupler section including a third pin hole located a second distance away from the y-axis and a torque tube coupling section.
    Type: Grant
    Filed: February 19, 2019
    Date of Patent: February 23, 2021
    Assignee: Caterpillar Inc.
    Inventors: Riley A. Albers, Steven D. Springer, Rowan T. Franks, David R. Evans
  • Publication number: 20200263386
    Abstract: A lift arm for a loader can comprise a pivot end section extending along a first axis and including a first pin hole defining an origin at the intersection of x- and y-axes, a bucket end section extending along a second axis and including a second pin hole located a first distance away from the origin on the y-axis, and a hump section connecting the pivot and bucket end sections comprising a lifting cylinder coupler section including a third pin hole located a second distance away from the y-axis and a torque tube coupling section.
    Type: Application
    Filed: February 19, 2019
    Publication date: August 20, 2020
    Applicant: Caterpillar Inc.
    Inventors: Riley A. Albers, Steven D. Springer, Rowan T. Franks, David R. Evans
  • Publication number: 20130187360
    Abstract: An axle for providing a steering arrangement in a machine. The axle including a differential housing from which a first arm and a second arm are extending. A first support portion is disposed in the first arm. The first support portion is configured to receive a first steering actuator. Similarly, a second support portion is disposed in the second arm. The second support portion is configured to receive a second steering actuator.
    Type: Application
    Filed: January 20, 2012
    Publication date: July 25, 2013
    Applicant: Caterpillar Inc.
    Inventors: Steven D. Springer, Bruno L. Risatti
  • Publication number: 20120082513
    Abstract: A compaction apparatus includes a removable plate configured to at least partially cover an outermost arcuate surface of a wheel of a compactor vehicle. The plate defines a plurality of ports, each port being configured to receive at least a portion of a base of a compactor wheel projection.
    Type: Application
    Filed: October 5, 2010
    Publication date: April 5, 2012
    Applicant: Caterpillar Inc.
    Inventor: Steven D. Springer
  • Publication number: 20120067603
    Abstract: An axle guard assembly of a machine protects against intrusion of wire wrap into a central cavity of a ground engaging device. The guard, which is mounted to the axle, includes a wall disposed within the cavity of the ground engaging device. A cover can be provided which includes a flange circumscribing a central portion. The central portion is disposed axially inwardly of an inboard opening to the cavity. The flange can extend radially outwardly from the central portion and axially outwardly toward the wall. The periphery of the cover can be configured such that it is larger than the opening to the cavity. In another aspect, a support vane can be provided which extends along a longitudinal axis between a first wall and a second wall and includes a planar vane surface extending substantially radially to the longitudinal axis.
    Type: Application
    Filed: September 22, 2010
    Publication date: March 22, 2012
    Applicant: CATERPILLAR INC.
    Inventor: Steven D. Springer