Patents Represented by Attorney, Agent or Law Firm Maginot, Addison & Moor
  • Patent number: 6280010
    Abstract: A track tensioning assembly for adjusting tension on a drive track chain of a work machine includes a main housing defining a main chamber. The track tensioning assembly also includes a recoil piston positioned within the main chamber. The recoil piston has a recoil central passage defined therein. The track tensioning assembly further includes a master piston secured within the recoil central passage. The master piston (i) increases fluid pressure in the main chamber when the master piston is positioned in a first master position, and (ii) decreases fluid pressure within the main chamber when the master piston is positioned in a second master position. The track tensioning assembly also includes a slave piston having a first end positioned within the main chamber and a second end extending out of the main housing so as to be mechanically coupled to the drive track chain.
    Type: Grant
    Filed: December 16, 1999
    Date of Patent: August 28, 2001
    Assignee: Caterpillar Inc.
    Inventor: Thomas E. Oertley
  • Patent number: 6276768
    Abstract: An undercarriage assembly of a work machine includes a first drive track chain and a second drive track chain. The undercarriage assembly also includes a first hydraulic actuator mechanically coupled to the first drive track chain so as to adjust tension on the first drive track chain and a second hydraulic actuator mechanically coupled to the second drive track chain so as to adjust tension on the second drive track chain. The undercarriage assembly further includes a slack adjuster assembly.
    Type: Grant
    Filed: December 16, 1999
    Date of Patent: August 21, 2001
    Assignee: Caterpillar Inc.
    Inventor: Clifford E. Miller