Solid anti-friction devices – materials therefor – lubricant or se – Lubricants or separants for moving solid surfaces and... – Solid hydrocarbon polymer
Reexamination Certificate
2005-12-07
2010-06-08
Caldarola, Glenn A (Department: 1797)
Solid anti-friction devices, materials therefor, lubricant or se
Lubricants or separants for moving solid surfaces and...
Solid hydrocarbon polymer
C508S110000, C208S018000, C208S019000, C208S027000, C208S950000
Reexamination Certificate
active
07732391
ABSTRACT:
A manual transmission fluid having a VI greater than 160 and a Brookfield viscosity at −40° C. less than 30,000 cP. It comprises: 1) a base oil (made from a waxy feed) having less than 0.06 wt % aromatics, greater than 5 wt % total molecules with cycloparaffinic functionality, and a ratio of molecules with monocycloparaffinic functionality to molecules with multicycloparaffinic functionality greater than 20; and a manual transmission fluid additive package. In another embodiment, the manual transmission fluid comprises: 1) a base oil having a high VI and a kinematic viscosity at 100° C. greater than 5.5 cSt, 2) less than 0.01 wt % pour point depressant, and 3) a manual transmission fluid additive package. This invention is also directed to a process to make the manual transmission fluid, comprising the steps of hydroisomerization dewaxing, selecting base oil fractions having a high VI, and blending the fractions with an additive package.
REFERENCES:
patent: 5135638 (1992-08-01), Miller
patent: 5282958 (1994-02-01), Santilli et al.
patent: 7476645 (2009-01-01), Rosenbaum et al.
patent: 2005/0133407 (2005-06-01), Abernathy et al.
patent: 2005/0133408 (2005-06-01), Abernathy et al.
patent: 2005/0258078 (2005-11-01), Rosenbaum et al.
patent: 2005/0261145 (2005-11-01), Rosenbaum et al.
patent: 2005/0261146 (2005-11-01), Rosenbaum et al.
patent: 2005/0261147 (2005-11-01), Rosenbaum et al.
patent: WO2005/017077 (2005-02-01), None
Bertrand Nancy J.
De Weerdt Marc J.
Plaetinck Thomas
Rosenbaum John
Abernathy Susan M.
Caldarola Glenn A
Chevron U.S.A. Inc.
Vasisth Vishal
LandOfFree
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