Patents by Inventor Dev R. Malik

Dev R. Malik 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).

  • Dragline modular swing drive unit
    Patent number: 5078285
    Abstract: In an excavating machine having a ring gear and a rotating frame including a top and bottom plate, an assembly for rotating the frame relative to the ring gear includes a plurality of drive units, each of the drive units is mounted to the bottom plate and is disposed between the top and bottom plates of the rotating frame. Each of the drive units further includes a pinion extending below the bottom plate and adjacent to the ring gear for driving engagement with the ring gear.
    Type: Grant
    Filed: January 24, 1990
    Date of Patent: January 7, 1992
    Assignee: Dresser Industries, Inc.
    Inventors: Allan E. Geyer, Richard W. McCoy, James A. Ehret, Dev R. Malik
  • Dragline rotating frame structure
    Patent number: 5058753
    Abstract: A frame for an excavating machine having a ring gear wherein the frame is rotated with respect to the ring gear includes top and bottom plates. A plurality of compartments are circularly disposed within the frame and between the plates. A plurality of drive units are provided wherein each drive unit is mounted within one of the plurality of compartments below the top plate. The drive units extend below the bottom plate for driving engagement with the ring gear. A plurality of radially disposed bulkheads are located within the frame between the top and bottom plates and between the plurality of compartments.
    Type: Grant
    Filed: August 31, 1990
    Date of Patent: October 22, 1991
    Assignee: Dresser Industries, Inc.
    Inventors: Dev R. Malik, James A. Ehret, Richard E. Blair, Shrishailesh R. Iyengar, Allan E. Geyer
  • Method and apparatus for minimizing effect of hard spots in rotating frame structure of mining machine on roller bearings
    Patent number: 4592667
    Abstract: A novel construction for mounting the roller circle system for power mining equipment and the like between the rotating portion and the base portion of the power mining device so as to minimize the adverse effects on roller bearings of hard spots caused by the intersection of bulkheads or ribs which strengthen the rotating frame and the base.
    Type: Grant
    Filed: November 12, 1985
    Date of Patent: June 3, 1986
    Assignee: Dresser Industries, Inc.
    Inventor: Dev R. Malik