Continuously variable transmission belt and method of producing metal element of the belt
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United States of America Patent
Stats
-
Jan 30, 2007
Grant Date -
Aug 28, 2003
app pub date -
Jan 27, 2003
filing date -
Feb 26, 2002
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A continuously variable transmission belt, including a metal ring assembly including a plurality of metal rings, and a plurality of metal elements which are retained by the metal ring assembly and each has a saddle surface contacted with an inner circumferential surface of the metal ring assembly. The saddle surface includes opposed end peripheries spaced from each other in a traveling direction of the belt and a curved portion located at each of the opposed end peripheries. The curved portion has a range length extending in the traveling direction of the belt and a radius of curvature larger than the range length. The metal element is produced by a method including subjecting a metal sheet to presswork to form a workpiece, subjecting the workpiece to heat treatment and deburring and then to preliminary beveling and subsequent beveling.
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