Patents by Inventor Charles George Ollinger, IV

Charles George Ollinger, IV 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).

  • Dredge cutterhead
    Patent number: 6578294
    Abstract: A dredge cutterhead has a plurality of helical arms interconnecting a hub and a ring. Each of the arms has a front leading edge for attachment of cutting teeth. In one aspect, each of the arms has a trough portion, and the arm is shaped such that dredged material is directed toward the ring along the center of the trough portion. In another aspect, the ring of the cutterhead defines an annular channel for receiving loosened material.
    Type: Grant
    Filed: February 2, 2001
    Date of Patent: June 17, 2003
    Assignee: Esco Corporation
    Inventor: Charles George Ollinger, IV
  • Dragline apparatus and bucket
    Patent number: 6550163
    Abstract: A dragline apparatus has an independently controlled front hoist line and rear hoist line. The front hoist line is connected to the forward end of the bucket, and the rear hoist line is connected to the rearward end.
    Type: Grant
    Filed: September 5, 2002
    Date of Patent: April 22, 2003
    Assignee: Esco Corporation
    Inventors: Terry Lee Briscoe, Charles George Ollinger, IV, Ermanno Simonutti
  • Dragline apparatus and bucket
    Patent number: 6446366
    Abstract: A dragline apparatus has an independently controlled front hoist line and rear hoist line. The front hoist line is connected to the forward end of the bucket, and the rear hoist line is connected to the rearward end.
    Type: Grant
    Filed: November 15, 2000
    Date of Patent: September 10, 2002
    Assignee: Esco Corporation
    Inventors: Terry Lee Briscoe, Charles George Ollinger, IV, Ermanno Simonutti
  • Dredge cutterhead
    Patent number: RE45648
    Abstract: A dredge cutterhead has a plurality of helical arms inter-connecting a hub and a ring. Each of the arms has a front leading edge for attachment of cutting teeth. In one aspect, each of the arms has a trough portion, and the arm is shaped such that dredged material is directed toward the ring along the center of the trough portion. In another aspect, the ring of the cutterhead defines an annular channel for receiving loosened material.
    Type: Grant
    Filed: June 16, 2005
    Date of Patent: August 11, 2015
    Assignee: ESCO Corporation
    Inventor: Charles George Ollinger, IV