Roller chain with randomized pitch
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United States of America Patent
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Mar 9, 1993
Grant Date -
N/A
app pub date -
Oct 16, 1991
filing date -
Oct 16, 1991
priority date (Note) -
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Abstract
A roller chain is provided with sets of links constructed of unequal pitchn order to alter the pattern of contacts between the chain and the sprocket and the resulting noise spectrum. The varying pitch lengths through the chain are achieved by varying the length of the inside links or the lengths of the outside links. Alternatively, the sizes and configurations of the rollers or bushings are varied. Configurations can include circular rollers, elliptical rollers or triangular rollers. The pattern of variation of the pitch of the links is randomized throughout the chain.
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