Elements of drive power transfer belt of belt-drive continuously variable transmission for vehicle
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United States of America Patent
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Aug 18, 2015
Grant Date -
Aug 16, 2012
app pub date -
Feb 14, 2012
filing date -
Feb 15, 2011
priority date (Note) -
In Force
status (Latency Note)
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Abstract
Provided are elements arranged along a ring of a drive power transfer belt wound on pulleys of a belt-drive continuously variable transmission. Each element has a recess at one side of the element and a projection projecting from the other side to fit into the recess of the adjacent element. The projection has a first engagement portion provided at its base side such that a predetermined engagement gap is created on the radially outer side when the projection fits in the recess of the adjacent element, and a second engagement portion provided at the tip side of the projection and decreasing in diameter toward the tip of the projection from the first engagement portion. The gradient with which the diameter of the second engagement portion decreases is larger than the gradient with which the diameter of the first engagement portion decreases toward the tip of the projection.
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