| 摘要 |
A drain valve for automotive crank cases. The drain valve is substituted for the usual crank case drain plug and is in the form of a threaded plug having a manually operable valve permitting drainage of the crank case oil without removal of the plug. A spherical valve body is seated in a hemispherical valve seat provided in the plug and by means of radial arms extending from the valve body and which are journaled between the plug and a cap, rotation provides for registry of a diametrical opening in the valve body with a plug opening to drain the oil. Operation of the valve arms can be effected either manually, by a screw driver, wrench or the like, or by remote control by linkage connecting the operating arm to a remote control handle on the dashboard of an automobile. A simple cap held in by struckover flanges holds the valve body in the plug and permits ready assemblage.
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