Rocker arm assembly having slider roller oil pumping features

Details Rocker arm assembly having slider roller oil pumping features Rocker arm assembly having slider roller oil pumping features

2011-07-19

2011-07-19

Eshete, Zalalem (Department: 3748)

Internal-combustion engines

Poppet valve operating mechanism

Rocker

C384S286000, C384S372000, C384S377000

Reexamination Certificate

active

07980216

ABSTRACT:
An engine assembly may include an engine structure, a rocker arm assembly supported by the engine structure, and a camshaft. The rocker arm assembly may include a lever body, a support member coupled to the lever body, and a first roller member supported for rotation on the support member. The first roller member may include an annular body having first and second axial ends and an inner bore. The inner bore may receive the support member and include a groove extending from the first axial end to the second axial end. The groove may include a first portion at the first axial end rotationally offset relative to a second portion at the second axial end of the annular body. The first roller member may be rotated by rotation of the camshaft and the groove may be adapted to pump oil along the bore when the first roller member is rotated.

REFERENCES:
patent: 6220758 (2001-04-01), Ono et al.
patent: 2006/0062504 (2006-03-01), Wilton et al.

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