Printing – Rolling contact machines – Rotary
Patent
1995-06-16
1998-05-19
Bennett, Christopher A.
Printing
Rolling contact machines
Rotary
101181, 101248, B41F 500
Patent
active
057524432
ABSTRACT:
A mechanism to exclude critical speeds from normal operating ranges is provided having at least one drive unit to drive at least one unit of a processing machine. The at least one unit of a processing machine has a known torsional stiffness. A single power transmission is provided linking said at least one drive unit to said at least one unit of a processing machine. Said power transmission includes an adjustment member coupling to tune all torsional critical speeds out of the range of normal operating speeds of the processing machine. A single power transmission unit can therefore be used for an entire family of processing machines, wherein each processing machine may have a different stiffness.
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Bennett Christopher A.
Heidelberg Harris Inc.
Heidelberger Druckmaschinen AG
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