Lubrication – Automobile crank and gear case service
Reexamination Certificate
2008-04-15
2008-04-15
Fenstermacher, David M (Department: 3682)
Lubrication
Automobile crank and gear case service
C184S105300, C184S106000, C123S1960CP
Reexamination Certificate
active
07357225
ABSTRACT:
A two part oil drain plug assembly facilitates the draining of oil or fluid from a sump, and its use prevents the threads of the sump, which may be an automotive oil pan, from becoming stripped or damaged. Further, the device aids in the determination of the physical condition (wear) of the engine, transmission or the like to which the sump is attached, by attracting metal particles to an isolated magnet on the drain plug.
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Fenstermacher David M
Freiburger Thomas M.
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