Patents by Inventor James William Schaffer

James William Schaffer 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: 12623488
    Abstract: A shield assembly is configured for use with the axle assembly of a compaction machine. The machine includes a ground-engaging device with a hub that defines a cavity and an inboard opening. The axle assembly comprises a spindle and a final drive, with a gap between them. The shield assembly includes a shield body mounted within the hub cavity, positioned above the spindle and final drive, and extending over the gap. This arrangement directs debris away from the gap and associated seals, reducing contamination and wear of axle components during operation in debris-laden environments.
    Type: Grant
    Filed: April 27, 2022
    Date of Patent: May 12, 2026
    Assignee: Caterpillar Inc.
    Inventors: Gerald William Gavin, James William Schaffer, Matthew M. DeSanto, Jeremy Dean Folkerts, Travis Edward Schwark
  • Publication number: 20240308271
    Abstract: A guard for a seal of a wheeled industrial machine, the guard comprising an cylindrical, annular body having a first plate, a second plate with an upper portion and a lower portion, and a connecting portion extending between the first plate and the second plate; wherein the first plate extends in a radially inward direction from the connecting portion and includes a plurality of holes; wherein the upper portion is configured to extend into a corresponding slot of a rotating element of a wheel of the wheeled industrial machine; and wherein the lower portion is configured to extend toward an axle of the wheeled industrial machine.
    Type: Application
    Filed: March 16, 2023
    Publication date: September 19, 2024
    Applicant: Caterpillar Inc.
    Inventors: Hari Prasad KAFLE, Steven Todd HAROLDSON, James William SCHAFFER, Robert Leo GOSDA, Daniel Patrick VERTENTEN
  • Publication number: 20230347687
    Abstract: A shield assembly is provided for an axle assembly of a machine. The machine includes a ground engaging device including a hub. The hub defines a cavity and an inboard opening to the cavity. The axle assembly includes a spindle, a final drive rotatably coupled to the spindle, and a gap disposed between the spindle and the final drive. The shield assembly has a shield body coupled to the axle assembly and disposed within the cavity of the ground engaging device. The shield body is located above portions of the spindle and the final drive, and extends over the gap.
    Type: Application
    Filed: April 27, 2022
    Publication date: November 2, 2023
    Applicant: Caterpillar Inc.
    Inventors: Gerald William Gavin, James William Schaffer, Matthew M. DeSanto, Jeremy Dean Folkerts, Travis Edward Schwark