Chain and manufacturing method of a chain
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United States of America Patent
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Oct 15, 2019
Grant Date -
Feb 1, 2018
app pub date -
Jul 6, 2017
filing date -
Jul 27, 2016
priority date (Note) -
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Abstract
A chain includes a plurality of inner links and a plurality of outer links. Each of the inner links includes a pair of inner plates each having a bush hole and a bush. The bush includes both end portions which are press-fitted into bush holes of the pair of the inner plates. Each of the outer links includes a pair of outer plates and a pin. A diametric dimension in a pitch direction of an inner diametric surface of the bush is constant along an entire axial length of the bush. A diametric dimension in a height direction of the inner diametric surface at each of the both end portions of the bush is smaller than a diametric dimension in the height direction of the inner diametric surface at an intermediate part of the bush located between the pair of inner plates.
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