Conveyors: power-driven – Conveyor section – Screw
Reexamination Certificate
2006-02-28
2006-02-28
Bidwell, James R. (Department: 3651)
Conveyors: power-driven
Conveyor section
Screw
C198S550600, C414S310000
Reexamination Certificate
active
07004305
ABSTRACT:
A grain bin sweep is adapted to be assembled within a grain bin. The sweep comprises an auger assembly including a shield and an auger; and a tractor frame assembly comprising a frame first part and a frame second part. The sweep components are sized to fit through a small access opening to a grain bin and to then be assembled together within the grain bin. Additionally, the assembly of the grain bin sweep is accomplished using simple hand tools, such as wrenches, screwdrivers, etc. No welding, drilling or other fabrication is required to assemble the parts or components together to form the sweep.
REFERENCES:
patent: 3647094 (1972-03-01), Jackson
patent: 4313705 (1982-02-01), Jackson
patent: 4386695 (1983-06-01), Olson
patent: 4426187 (1984-01-01), Olson
patent: 5167318 (1992-12-01), Siemens
patent: 5511925 (1996-04-01), Muth
patent: 5639200 (1997-06-01), Jiskoot
patent: 5769590 (1998-06-01), Weikel
Bidwell James R.
Polster Lieder Woodruff & Lucchesi L.C.
The GSI Group, Inc.
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