Conveyors: power-driven – Conveyor section – Endless conveyor
Reexamination Certificate
2007-03-27
2007-03-27
Crawford, Gene O. (Department: 3651)
Conveyors: power-driven
Conveyor section
Endless conveyor
C198S832000, C198S502400, C198S810010
Reexamination Certificate
active
11160944
ABSTRACT:
A conveyor system in which a modular belt or chain is driven by a drive element rotated at a predetermined variable angular speed to compensate for speed fluctuations due to chordal action. A speed signal generator generates a speed signal generally inverse to the uncompensated linear speed of a belt driven by drive elements rotated at a constant angular speed. The speed signal generator detects an encoded pattern rotating in known relationship to the drive element. The encoded pattern represents a predetermined speed profile that is used to compensate for belt speed fluctuations or to provide custom belt speed performance.
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Crawford Gene O.
Cronvich James T.
Laitram L.L.C.
Prakasam Ramya G.
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