Oil drain valve
AssigneeAeroquip Corporation
InventorsRobert A. Laipply, Paul J. E. Fournier
Life of this patent
Estimating the term…
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.
Claims9
An oil drain fitting for internal combustion engines comprising, in combination, an elongated tubular body having an inner end and an outer end, a passage axially extending through said body intersecting said ends, an external thread defined on said body adjacent said inner end for threading said body into an engine drain hole, valve operating attachment means defined on said body adjacent said outer end, a tubular valve axially reciprocally mounted within said passage having an open end adjacent said body outer end and a closed end adjacent said body inner end, a valve seat defined on said body adjacent said inner end, a valve head defined on said valve closed end engagable with said seat when said valve is axially positioned to a closed position, a port defined in said valve adjacent said head communicating with the interior of said valve whereby oil will flow into said valve when said valve is axially positioned to an open position when said head disengages said seat, spring means mounted on said body axially biasing said valve toward said closed position, and valve actuating means defined on said valve for axially displacing said valve from said closed position to said open position.
Dependencies are inferred from the claim text.