Conveyors: power-driven – Conveyor section – Spiral
Reexamination Certificate
2007-07-10
2007-07-10
Bidwell, James R. (Department: 3651)
Conveyors: power-driven
Conveyor section
Spiral
C193S0350SS
Reexamination Certificate
active
11500533
ABSTRACT:
A spiral conveyor with automatic flow control includes a plurality of curved segments connected to form a spiral for the flow by gravity of articles from an upper level to a lower level. Each of the segments includes freely rotating skate wheels forming a conveying surface and a controlled, powered cylindrical roller. A sensor mounted in each segment senses the presence of an article in the segment. A controller receives the signals from the sensors and activates the associated roller for transport mode to assist articles through the conveyor if the path is clear, or if the downstream portion of the conveyor is blocked, to reverse the roller for accumulate mode to hold articles in the segment until the path is cleared.
REFERENCES:
patent: 790776 (1905-05-01), Alvey
patent: 883297 (1908-03-01), Courtney
patent: 958004 (1910-05-01), Phelan
patent: 1890753 (1932-12-01), Scheurer
patent: 2100423 (1937-11-01), Ziegler
patent: 2145475 (1939-01-01), Cook
patent: 2834447 (1958-05-01), Gmür
patent: 3101829 (1963-08-01), Silver
patent: 3532201 (1970-10-01), McConnell
patent: 3598225 (1971-08-01), Merrick
patent: 3718248 (1973-02-01), Muller
patent: 3720302 (1973-03-01), Kegler
patent: 3768630 (1973-10-01), Inwood et al.
patent: 3770102 (1973-11-01), Degood
patent: 4006815 (1977-02-01), Werntz
patent: 4042101 (1977-08-01), Krammer et al.
patent: 4266660 (1981-05-01), Herman
patent: 4293065 (1981-10-01), Dyer et al.
patent: 4314629 (1982-02-01), Shilander et al.
patent: 4361224 (1982-11-01), Bowman
patent: 4372441 (1983-02-01), Krammer
patent: 4488638 (1984-12-01), Morgan et al.
patent: 5033600 (1991-07-01), Klein
patent: 5070987 (1991-12-01), Koltookian
patent: 5191967 (1993-03-01), Woltjer et al.
patent: 5213189 (1993-05-01), Agnoff
patent: 5228558 (1993-07-01), Hall
patent: 5316130 (1994-05-01), Heit et al.
patent: 5375689 (1994-12-01), Sapp et al.
patent: 5456347 (1995-10-01), Best et al.
patent: 5484049 (1996-01-01), Huang et al.
patent: 5490587 (1996-02-01), Fisher
patent: 5505291 (1996-04-01), Huang et al.
patent: 5632371 (1997-05-01), Best et al.
patent: 5642799 (1997-07-01), Warrilow
patent: 5685416 (1997-11-01), Bonnet
patent: 5901827 (1999-05-01), Belz et al.
patent: 5906267 (1999-05-01), Heit et al.
patent: 6199677 (2001-03-01), Belz et al.
patent: 6298971 (2001-10-01), Belz et al.
patent: 6398014 (2002-06-01), Belz et al.
patent: 6659268 (2003-12-01), Belz et al.
patent: 6935485 (2005-08-01), Belz et al.
patent: 2004/0129537 (2004-07-01), Belz et al.
Belz Donald F.
Glass Duane L.
Bidwell James R.
Carter Control Systems, Inc.
Volpe and Koenig P.C.
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