Patents by Inventor Patrick J. Mulligan

Patrick J. Mulligan 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).

  • Dual-bushing track chain cartridge
    Patent number: 7850256
    Abstract: An endless track chairs for use with a track-type vehicle comprises a cartridge joined to the links of first and second link sets for relative rotation between the link sets.
    Type: Grant
    Filed: October 24, 2008
    Date of Patent: December 14, 2010
    Assignee: Deere & Company
    Inventor: Patrick J. Mulligan
  • Endless track chain assembly with in situ replacement wear parts
    Patent number: 7798579
    Abstract: An endless track chain assembly for an endless track vehicle having drive teeth received in tapered slots in a drive wheel. The drive teeth are replaceable in situ by a movement in a direction parallel to the rotational axis of the drive wheel. The drive teeth inter-fit with tapered inserts on the endless chain assembly so that all the driving forces are transmitted between the two replaceable wear elements. The inserts are inter-connected with pairs of links in a three point mounting as a structural unit to increase torsional rigidity and enable bushings that inter-connect adjacent links to be smaller that conventional bushings. The inserts on the endless chain assembly are readily replaceable by fasteners accessed from the exterior of the endless chain assembly.
    Type: Grant
    Filed: August 29, 2007
    Date of Patent: September 21, 2010
    Assignee: Deere & Company
    Inventor: Patrick J. Mulligan
  • TRACK IDLER WITH REPLACEABLE WEAR PADS
    Publication number: 20100102623
    Abstract: An idler for use with an endless track of a track-type vehicle comprises a wheel and a rim. The rim comprises fasteners and replaceable wear pads releasably mounted to and positioned about the periphery of the wheel using the fasteners.
    Type: Application
    Filed: October 24, 2008
    Publication date: April 29, 2010
    Inventor: Patrick J. Mulligan
  • Dual-Bushing Track Chain Cartridge
    Publication number: 20100102624
    Abstract: An endless track chairs for use with a track-type vehicle comprises a cartridge joined to the links of first and second link sets for relative rotation between the link sets.
    Type: Application
    Filed: October 24, 2008
    Publication date: April 29, 2010
    Inventor: Patrick J. Mulligan
  • ENDLESS TRACK CHAIN ASSEMBLY WITH IN SITU REPLACEABLE WEAR PARTS
    Publication number: 20090058182
    Abstract: An endless track chain assembly for an endless track vehicle having drive teeth received in tapered slots in a drive wheel. The drive teeth are replaceable in situ by a movement in a direction parallel to the rotational axis of the drive wheel. The drive teeth inter-fit with tapered inserts on the endless chain assembly so that all the driving forces are transmitted between the two replaceable wear elements. The inserts are inter-connected with pairs of links in a three point mounting as a structural unit to increase torsional rigidity and enable bushings that inter-connect adjacent links to be smaller that conventional bushings. The inserts on the endless chain assembly are readily replaceable by fasteners accessed from the exterior of the endless chain assembly.
    Type: Application
    Filed: August 29, 2007
    Publication date: March 5, 2009
    Inventor: Patrick J. Mulligan