Cam structure
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Aug 18, 2015
Grant Date -
Oct 2, 2014
app pub date -
Mar 26, 2014
filing date -
Mar 27, 2013
priority date (Note) -
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status (Latency Note)
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Abstract
A cam structure driving a tappet having a crowning on a top face and connected to a base end section of an intake or exhaust valve of an engine, includes: a camshaft rotating in synchronization with a crankshaft of the engine; a cam lobe mounted on the camshaft, and including: a base cam including: a base circular section having a mounting hole for the camshaft; and a valve lift section having a cut-out section in a tip end portion; and a roller provided in the cut-out section and having a cylindrical section with a constant diameter. A center section in a width direction of the base cam makes contact with the tappet at a position deviated from a center of the top face of the tappet, and the cylindrical section makes contact with the center of the top face of the tappet.
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