The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 29, 1991
Filed:
Jul. 16, 1990
Applicant:
Inventor:
Keith W Lipford, Pasadena, MD (US);
Assignee:
Ellicott Machine Corporation, Baltimore, MD (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E02F / ;
U.S. Cl.
CPC ...
37 64 ; 37 72 ;
Abstract
An auger type dredge head may be mounted on a dredge ladder in a selected angular position with respect to the ladder axis, for sweeping or fore and aft operation, and a selected angular position may be set and maintained with respect to the dredge barge. The head has movable shrouds on opposite sides of the auger, the shrouds carrying doors which open automatically to eject matter too large to be accommodated by the dredge suction pipe. The shrouds have sloping fins on their inner faces to aid in the movement of dredged material to a centrally located suction pipe inlet.