Overfill valve

Details Overfill valve Overfill valve

1985-07-09

1986-05-20

Smith, Leonard E.

Lubrication

Lubricators

Constant level

F01M 1112

Patent

active

045895244

ABSTRACT:
The age old problem of monitoring a liquid level in a reservoir has continued to cause problems. If the level is too low, the component will malfunction due to lack of lubricant; on the other hand, if the level is too high, the component can overheat. The present system overcomes the problem of the level being too high by providing an automatic vent for draining excess liquid from the reservoir. When the engine is in the nonoperating mode, the spring moves the spool of the valve to the open position. In the open position, excess liquid is vented from the reservoir establishing the predetermined liquid level. When the engine is operating, a portion of the air from the compressor enters the chamber forcing the spool to the closed position preventing liquid from being vented from the reservoir. In the closed position, contaminants are also prevented from entering the reservoir. The present invention overcomes the problem of overfilling a reservoir by venting excess liquid from the reservoir when the engine is in the nonoperating mode.

REFERENCES:
patent: 3033311 (1962-05-01), Edgar et al.
patent: 4091894 (1978-05-01), Lang
patent: 4091895 (1978-05-01), Lang
patent: 4495963 (1985-01-01), Hensley

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