U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Dredging vessel, dredging assembly and method of dredging

Patent 5638620 Issued on June 17, 1997. Estimated Expiration Date: Icon_subject May 18, 2015. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

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117109

316377

461193

660956

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Inventor

Assignee

Application

No. 443656 filed on 05/18/1995

US Classes:

37/338, Endless37/316, Including rake or scoop structure37/337, Rotary digger (e.g., bucket wheel)37/341Scoop or bucket

Examiners

Primary: Melius, Terry Lee
Assistant: Batson, Victor

Attorney, Agent or Firm

Foreign Patent References

  • 1259635 CA 09/13/1989
  • 2417545 DE. 10/13/1975
  • 98068 NL. 05/13/1961
  • 7903974 NL 11/13/1980
  • 8901498 NL 01/13/1991
  • 450932 GB. 07/13/2012

International Class

E02F 003/14

Foreign Application Priority Data

1994-05-18 NL

Abstract

The present invention discloses a dredging assembly which includes a vessel having at least one opening therein. A dredging pole of a predetermined length is positioned in and extends through the opening and is positioned substantially perpendicular to the vessel when in the dredging position. A dredging wheel is positioned at the lower end of the dredging pole with a vertically movable tension wheel at an upper end of the dredging pole and a reversing wheel spaced horizontally from the dredging pole. An endless cable is mounted on the dredging pole extending around the tensioning wheel, dredging wheel and reversing wheel and a plurality of the scoops are mounted on the endless cable, wherein the scoops are turned upside down by the reversing wheel for dumping the material carried therein.

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