Rocker arm and method of manufacturing same
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United States of America Patent
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Mar 9, 2010
Issued Date -
N/A
app pub date -
Jan 31, 2007
filing date -
Feb 2, 2006
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A rocker arm that is rockably attached to a cylinder head actuates a valve by a guide groove that is formed at an end thereof engaging with an upper end of a valve stem, and a roller that is mounted in a roller housing portion of the arm main unit contacting against a cam and rocking. The guide groove is formed by press working ends of the arm main unit in the thickness direction of the plate material to form a pair of walls, and thereafter applying sandwiching pressure in the lateral direction to the walls to increase the height thereof.
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