Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
March 27, 2007
Patent Application Number
11160944
Date Filed
July 15, 2005
Patent Primary Examiner
Patent 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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