NASA NTRS · 19630000006
Chain friction system gives positive, reversible drive
Abstract
By cementing a strip of an elastomer to the smooth metal rim of the pulley and neoprene covered idlers providing suitable tension to the chain around the pulley, a positive reversible drive is accomplished more quietly and with less vibration.
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Davidsen, J. S.. 1964-04-01. Chain friction system gives positive, reversible drive. https://ntrs.nasa.gov/citations/19630000006
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