Patents Assigned to EA Engineering Science and Technology, Inc.
  • Dredging method and apparatus
    Patent number: 7089693
    Abstract: An improved hydraulic dredging apparatus for removing a sediment layer from an underlying substrate lying below a water surface includes a receptacle having an open-front portion through which is sediment is collected, means for attaching the dredging apparatus to the submersible end of a boom that extends from a surface vehicle, a hydraulic pump for pumping a sediment and water slurry to the water's surface.
    Type: Grant
    Filed: February 5, 2003
    Date of Patent: August 15, 2006
    Assignee: EA Engineering Science and Technology, Inc.
    Inventors: James G. Collins, Daniel J. Levy