Bi-modal rollers
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United States of America Patent
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Oct 10, 2017
Issued Date -
N/A
app pub date -
Mar 31, 2016
filing date -
Mar 31, 2015
priority date (Note) -
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status (Latency Note)
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Abstract
An apparatus includes a bi-modal roller configured to rotate about a longitudinal axis of the bi-modal roller. The bi-modal roller includes two ends and a rolling outer surface. The rolling outer surface is divided into a convex portion and concave portion. The concave portion includes at least one concave curve extending longitudinally between the two ends. The concave portion is configured to, when a film physically contacts the concave portion, affect translation of the film in response to a stick condition or a slip condition. The convex portion includes at least one convex curve extending longitudinally between the two ends. The convex portion is configured to, when the film physically contacts the convex portion, affect translation of the film in response to a stick condition or a slip condition.
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