Patents by Inventor Craig E. Harder

Craig E. Harder 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).

  • Magnetic wear saving device
    Patent number: 8701586
    Abstract: A magnetic wear saving device including a resilient member and a magnetic member for protecting a wear surface on a material handling device. The magnetic wear saving device further including a release means provided within a bore formed through and along the central axes of the resilient member and the magnetic member for removing the magnetic wear saving device from the wear surface of the material handling device. There may be a single shear plate with several recesses for the magnetic wear saving devices, or the wear surface of the equipment itself may be integrally formed with recesses for the magnetic wear saving devices.
    Type: Grant
    Filed: February 7, 2011
    Date of Patent: April 22, 2014
    Assignee: Raptor Mining Products Inc.
    Inventors: Craig E. Harder, Murray A Smith
  • Ground engaging tool system
    Patent number: 8127475
    Abstract: A ground engaging tool system comprises a ground engaging tool such as a tip, an adapter mounted to or part of a work tool, and a rotating lock member. The ground engaging tool is attached to the adapter, and a post portion of the adapter slides into a slot provided on the lock. The lock is rotated so that the entrance to the slot is blocked and the post cannot slide out of the slot. The lock in this position is in a locking position, and the retention of the post in the slot of the lock retains the ground engaging tool to the adapter.
    Type: Grant
    Filed: June 18, 2010
    Date of Patent: March 6, 2012
    Assignee: Caterpillar Inc.
    Inventors: Craig E. Harder, Murray A. Smith
  • Ground engaging tool system
    Patent number: 8122622
    Abstract: A ground engaging tool system comprises a ground engaging tool such as a tip, an adapter mounted to or part of a work tool, and a rotating lock member. The ground engaging tool is attached to the adapter, and a post portion of the adapter slides into a slot provided on the lock. The lock is rotated so that the entrance to the slot is blocked and the post cannot slide out of the slot. The lock in this position is in a locking position, and the retention of the post in the slot of the lock retains the ground engaging tool to the adapter.
    Type: Grant
    Filed: June 18, 2010
    Date of Patent: February 28, 2012
    Assignee: Caterpillar Inc.
    Inventors: Murray A Smith, Craig E. Harder
  • Magnetic wear saving device
    Publication number: 20110129638
    Abstract: A magnetic wear saving device including a resilient member and a magnetic member for protecting a wear surface on a material handling device. The resilient member consisting of an upper portion and a lower portion integrally formed together. The upper portion having a top exterior surface, and the lower portion having a bottom surface for contacting with a wear surface on a material handling device. The bottom surface of the lower portion being formed with a recess for receiving and coupling the magnetic member to the resilient member. The magnetic member having an outer magnetic surface for releaseably securing the magnetic member and the resilient member to the wear surface of the material handling device. The magnetic wear saving device further includes a shear plate having an outer edge and an inner circular edge.
    Type: Application
    Filed: February 7, 2011
    Publication date: June 2, 2011
    Inventors: Craig E. Harder, Murray A. Smith
  • Ground engaging tool system
    Patent number: 7762015
    Abstract: A ground engaging tool system comprises a ground engaging tool such as a tip, an adapter mounted to or part of a work tool, and a rotating lock member. The ground engaging tool is attached to the adapter, and a post portion of the adapter slides into a slot provided on the lock. The lock is rotated so that the entrance to the slot is blocked and the post cannot slide out of the slot. The lock in this position is in a locking position, and the retention of the post in the slot of the lock retains the ground engaging tool to the adapter.
    Type: Grant
    Filed: August 16, 2007
    Date of Patent: July 27, 2010
    Assignee: Caterpillar Inc
    Inventors: Murray A. Smith, Craig E. Harder