Title:
SCREW CONVEYOR COMPRISING TWO CONCENTRIC SHAFTLESS SCREWS
Document Type and Number:
WIPO Patent Application WO2002062683
Kind Code:
A8
Abstract:
A conveyor comprising a pipe and a first screw (10) which is arranged inside and essentially conentrically with the pipe and which is rotatable relative to the pipe and comprises at least on vane (11) which in the radial direction extends between a first inner radius and a first outer radius and which describes a first helix on a first geometric cylinder with said first inner radius. Moreover, the conveyor comprises a second screw (20) which is arranged essentially concentrically with said pipe (30) and said first screw (10). The second secrew (20) is arranged inside said first geometric cylinder and is rotatable relative to the first screw (10).
Inventors:
LINDH PAUL (SE)
Application Number:
PCT/SE2002/000213
Publication Date:
April 15, 2004
Filing Date:
February 07, 2002
Export Citation:
Assignee:
DUNBRIAR INVEST LTD (TC)
LINDH PAUL (SE)
LINDH PAUL (SE)
International Classes:
B65G33/18; (IPC1-7): B65G33/18
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