Patents by Inventor Stuart Cover

Stuart Cover 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).

  • Multi-capacity cylinder
    Patent number: 9234587
    Abstract: A multi-capacity hydraulic cylinder includes a hollow cylinder closed by a cylinder head, an annular piston moveable within the hollow cylinder to divide the interior of hollow cylinder into a first chamber and a second chamber, a hollow piston rod coupled to the piston and aligned with an opening in the piston, and a secondary rod moveable within the hollow piston rod to define a third chamber in the hollow piston rod, where the third chamber has a cross-sectional area that is less than the cross-sectional area of the first chamber.
    Type: Grant
    Filed: May 23, 2012
    Date of Patent: January 12, 2016
    Assignee: Caterpillar Global Mining LLC
    Inventor: Stuart Cover
  • Dragline bucket with remote dumping and positioning capabilities
    Patent number: 8950091
    Abstract: A dragline bucket includes a main body moveable between a digging orientation and a dumping orientation and a pivotable spreader beam coupled to the main body at a pivot point. The dragline bucket further includes an energy capture mechanism including an actuator coupled to the main body and the pivotable spreader beam and an energy storage mechanism coupled to the actuator.
    Type: Grant
    Filed: March 26, 2012
    Date of Patent: February 10, 2015
    Assignee: Caterpillar Global Mining LLC
    Inventor: Stuart Cover
  • MULTI-CAPACITY CYLINDER
    Publication number: 20130312599
    Abstract: A multi-capacity hydraulic cylinder includes a hollow cylinder closed by a cylinder head, an annular piston moveable within the hollow cylinder to divide the interior of hollow cylinder into a first chamber and a second chamber, a hollow piston rod coupled to the piston and aligned with an opening in the piston, and a secondary rod moveable within the hollow piston rod to define a third chamber in the hollow piston rod, where the third chamber has a cross-sectional area that is less than the cross-sectional area of the first chamber.
    Type: Application
    Filed: May 23, 2012
    Publication date: November 28, 2013
    Inventor: Stuart Cover
  • DRAGLINE BUCKET WITH REMOTE DUMPING AND POSITIONING CAPABILITIES
    Publication number: 20130247426
    Abstract: A dragline bucket includes a main body moveable between a digging orientation and a dumping orientation and a pivotable spreader beam coupled to the main body at a pivot point. The dragline bucket further includes an energy capture mechanism including an actuator coupled to the main body and the pivotable spreader beam and an energy storage mechanism coupled to the actuator.
    Type: Application
    Filed: March 26, 2012
    Publication date: September 26, 2013
    Inventor: Stuart Cover