Variable compressibility roller
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United States of America Patent
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Mar 4, 1997
Grant Date -
N/A
app pub date -
Jan 16, 1996
filing date -
Jan 16, 1996
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present invention relates to a variable compressibility layer in rollers or flat pulleys. The present invention provides a smooth-surface roller that will 'spread' a web being conveyed by a roller, or urge flattening and prevention of wrinkles in the web. It will also assist in the centering of the web being conveyed on web-handling equipment. If a roller is small, it may be used as a flat pulley, wherein the present invention causes a belt to track in the center of the pulley.
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