Sheet metal rocker arm, manufacturing method thereof, cam...

Details Sheet metal rocker arm, manufacturing method thereof, cam... Sheet metal rocker arm, manufacturing method thereof, cam...

2005-11-01

2005-11-01

Denion, Thomas (Department: 3748)

Internal-combustion engines

Poppet valve operating mechanism

Rocker

C123S090440, C123S090450, C074S559000

Reexamination Certificate

active

06959676

ABSTRACT:
A sheet metal rocker arm manufactured by the steps of punching one metal plate to form a blank having a predetermined contour and through holes, and subjecting this blank to a bending work based on a press work to form a pair of side walls parallel to each other and a connecting portion for connecting the both ends of the side walls in the width direction thereof. This rocker arm is also provided with at least a pair of though holes formed at positions which are aligned with each other on the both side walls and at least one engagement portion provided in a part of the connecting portion. The thickness of at least one engagement portion, is formed to be greater than the thickness of the both side walls.

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