Patents by Inventor Dan J. Pierce

Dan J. Pierce 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).

  • Axle differential guard
    Patent number: 11273671
    Abstract: A guard for protecting a drain plug and a ground-facing surface of an axle housing on a machine including a first portion and a second portion. The first portion has a body configured to be mounted to the axle housing to protect at least portion of the ground-facing surface of the axle housing. The body includes an opening configured to allow access to and removal of the drain plug through the opening. The second portion is removably couplable to the first portion. When the second portion is attached to the first portion, the second portion covers the opening to protect the drain plug. When the second portion is removed, the drain plug is accessible and removable to service oil in the axle housing.
    Type: Grant
    Filed: July 23, 2019
    Date of Patent: March 15, 2022
    Assignee: Caterpillar Inc.
    Inventor: Dan J. Pierce
  • AXLE DIFFERENTIAL GUARD
    Publication number: 20210023879
    Abstract: A guard for protecting a drain plug and a ground-facing surface of an axle housing on a machine including a first portion and a second portion. The first portion has a body configured to be mounted to the axle housing to protect at least portion of the ground-facing surface of the axle housing. The body includes an opening configured to allow access to and removal of the drain plug through the opening. The second portion is removably couplable to the first portion. When the second portion is attached to the first portion, the second portion covers the opening to protect the drain plug. When the second portion is removed, the drain plug is accessible and removable to service oil in the axle housing.
    Type: Application
    Filed: July 23, 2019
    Publication date: January 28, 2021
    Applicant: Caterpillar Inc.
    Inventor: Dan J. Pierce
  • Axle differential guard
    Patent number: 10682884
    Abstract: A guard for protecting a drain plug and a ground-facing surface of an axle housing on a machine including a first portion and a second portion. The first portion has a body configured to be mounted to the axle housing to protect at least portion of the ground-facing surface of the axle housing. The body includes an opening configured to allow access to and removal of the drain plug through the opening. The second portion is removably couplable to the first portion. When the second portion is attached to the first portion, the second portion covers the opening to protect the drain plug. When the second portion is removed, the drain plug is accessible and removable to service oil in the axle housing.
    Type: Grant
    Filed: June 26, 2019
    Date of Patent: June 16, 2020
    Assignee: Caterpillar Inc.
    Inventors: Dan J. Pierce, Jim D. Angell, Bradley J. Miller