Drag conveyor system for particulate material
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United States of America Patent
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Sep 7, 1999
Grant Date -
N/A
app pub date -
Aug 11, 1997
filing date -
Aug 11, 1997
priority date (Note) -
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Abstract
A drag conveyor consists of a uniquely-configured trough and correspondingly-shaped outer edges of chain-driven paddles which enable the trough construction to provide physical support for a return run of the chain. The cross-sectional shape of the trough further restricts the paddles from tending toward lifting above the trough bottom and climbing or twisting as they carry material toward the outlet end of the conveyor. The paddle shape results in a self-cleaning conveyor, even enabling handling of materials heretofore not feasible with conventional U-shaped trough conveyors. Elimination of obstructing idler sprockets and cross shafts of the prior art enables a productivity increase of as much as 15% for the same designated size of conveyor.
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