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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.:

US 4945661 B1

PDFFull Text
Date of Patent:
Aug. 07, 1990

Filed:

Aug. 07, 1989

Dredging apparatus

Applicant:
Inventors:

Kiyoshi Kuioka, Yamaguchi, JP;

Ryoichi Yamamoto, Yamaguchi, JP;

Koji Inaba, Yamaguchi, JP;

Toyoma Hoshino, Yamaguchi, JP;

Assignee:

Ube Industries, Ltd., Ube, JP;

Attorney:

Kanesaka and Takeuchi

Primary Examiner:

Randolph A Reese

Assistant Examiner:

Arlen L Olsen

Int. Cl.
CPC ...
E02F / ;
U.S. Cl.
CPC ...
37 67 ; 37 65 ; 37189 ; 37DI / ; 406 50 ; 406 57 ; 406 60 ; 406 61 ; 406 93 ;
Abstract

Mud is taken into a vertical screw conveyor while an inlet device is rotating or without the use of such an inlet device. The mud is sent from the discharge port of the conveyor into a transport pipe. The mud is forcibly sent by a compressed air. Screens are provided to take only the mud into the screw conveyor. Paddles for stirring mud are provided on the vanes of the screw. A check valve and/or a pressure feeder (transport pump) is provided between the discharge port of the conveyor and the transport pipe.

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Kuioka, Kiyoshi. (1990). Dredging apparatus (U.S. Patent No. 4945661). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4945661

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