Title:
SCREW CONVEYOR AND SHIELD TUNNELING MACHINE
Document Type and Number:
WIPO Patent Application WO/2019/013328
Kind Code:
A1
Abstract:
In an aspect of the present invention, a screw conveyor comprises a helical auger and a central shaft that extends along the center line of the auger and that is formed in the same topological helix as the auger. In another aspect of the present invention, a screw conveyor is a ribbon-type screw conveyor and comprises a helical auger and a plurality of projections that are provided on the inner circumferential surface of the auger and that extend to the center line of the auger.
Inventors:
ODA MAKOTO
ITO TAKAO
ITO TAKAO
Application Number:
PCT/JP2018/026507
Publication Date:
January 17, 2019
Filing Date:
July 13, 2018
Export Citation:
Assignee:
KAWASAKI HEAVY IND LTD (JP)
International Classes:
E21D9/12; B65G33/04; B65G33/26
Foreign References:
JPH11229780A | 1999-08-24 | |||
JPS5746520U | 1982-03-15 | |||
JP2012122259A | 2012-06-28 | |||
JPS62268496A | 1987-11-21 |
Attorney, Agent or Firm:
PATENT CORPORATE BODY ARCO PATENT OFFICE (JP)
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