Appeal No. 96-3374
Application No. 08/115,974
impregnated with a solid film lubricant comprised of graphite
and at least one of molybdenum disulfide and boron nitride in
either one of a high temperature polymer and epoxy base, the
solid film lubricant has an affinity for oil and promotes
rapid formation of a stable oil film to reduce friction
therebetween.
20. A low friction cam shaft for actuating at least one
valve of an internal combustion engine comprising:
a shaft member extending longitudinally and having a
first outer surface;
at least one cam secured to said shaft member having a
base circle portion and lobe portion, said base circle and
lobe portions having a second outer surface,
wherein an interior portion of said base circle portion
is a soft low carbon steel;
wherein said lobe portion and a remainder of said base
circle portion are formed of a porous medium to high carbon
Ni-Cr alloy steel; and
at least one bearing member on said shaft member having a
third outer surface with at least one furrow extending along
the longitudinal direction of said shaft member;
said first and second and third outer surfaces having an
open porosity and are impregnated with a solid film lubricant,
the solid film lubricant has an affinity for oil and promotes
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Last modified: November 3, 2007