Oil drain valve

Details Oil drain valve Oil drain valve

1987-09-25

1988-05-24

Cross, E. Rollins

Internal-combustion engines

Lubricators

Crankcase, pressure control

123196S, 184 15, 2511491, F01M 100

Patent

active

047458941

ABSTRACT:
The invention pertains to an oil drain fitting for internal combustion engines which permits a quick draining of the oil. A body threaded into the conventional oil pan drain hole includes an axial passage having a tubular valve reciprocally mounted therein. The valve is open at its lower end and closed at its inner end having a head which seats against the inner end of the body. The lower end of the valve includes an abutment surface for engagement by a drain conduit fitting for axially displacing the valve inwardly to open the valve and permit flow therethrough. A cap may be mounted on the body to enclose the lower end of the valve when the fitting is not in use.

REFERENCES:
patent: Re28844 (1976-06-01), Dehar
patent: 3486730 (1969-12-01), Potash
patent: 3727638 (1973-04-01), Zaremba, Jr. et al.
patent: 3879013 (1975-04-01), Hajek et al.
patent: 3948481 (1976-04-01), Pollock
patent: 4025048 (1977-05-01), Tibbitts
patent: 4269237 (1981-05-01), Berger

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