Crankcase drainage device

Details Crankcase drainage device Crankcase drainage device

1987-04-13

1988-10-11

Smith, Leonard E.

Lubrication

Automobile crank and gear case service

137539, F16N 3300

Patent

active

047764309

ABSTRACT:
A drain plug adapter for use in place of a standard drain plug in the crankcase of an internal combustion engine includes two portions. The first portion is a drain plug adapter housing having a cylindrical passage through it in which a ball check valve is mounted. The ball check valve is resiliently biased by means of a compression coil spring into engagement with a rubber O-ring mounted in an annular groove near the upper end of the drain plug adapter to form a valve seat for engagement by the ball under bias of the compression coil spring. A valve body coupler is threadedly attached to the lower end of the drain plug adapter and has a fluid path through it in communication with the passage through the drain plug adapter. The coupler is connected by means of a fluid conduit to an electric motor driven pump for withdrawal oil from the crankcase by creation of a vacuum beneath the ball of the check valve to move it downwardly to permit oil to be withdrawn.

REFERENCES:
patent: 1846877 (1932-02-01), Knapp
patent: 1945872 (1934-02-01), Tappe
patent: 2191611 (1940-02-01), Eshbaugh
patent: 2206992 (1940-07-01), Wood
patent: 2216360 (1940-10-01), Sweetland
patent: 3282380 (1966-11-01), Burrell et al.
patent: 3343564 (1967-09-01), Peeples
patent: 3437082 (1969-04-01), Bouwkamp
patent: 3725990 (1973-04-01), Petersen
patent: 3743053 (1973-07-01), Kuklewicz
patent: 4269237 (1981-05-01), Berger
patent: 4347915 (1982-09-01), Cooper

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