Belt for continuously variable transmission
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United States of America Patent
Stats
-
Sep 2, 2003
Grant Date -
Apr 18, 2002
app pub date -
Aug 10, 2001
filing date -
Aug 11, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A belt for continuously variable transmission, wherein the relationship between the thickness of the metal ring assembly and the groove width of the ring slot is established so that a limit rolling angle .alpha. defined as a rolling angle of the metal elements provided when a radially outer peripheral surface of the metal ring assembly contacts a radially outer edge of the ring slot in the metal element is in a range of 0.7.degree.<.alpha.<2.5.degree.. The upper limit value 2.5.degree. of the angle .alpha. is set as a rolling angle at which the driving force transmitting efficiency is a predetermined value or more, and the lower limit value 0.7.degree. of the angle .alpha. is set as a rolling angle generated following the deformation of a V-face due to an axial thrust on a drive or driven pulley.
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