Oil draining control valve

Fluid handling – With casing – support – protector or static constructional... – Guards and shields

Patent

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Details

137315, 251 99, 251288, F16K 2708

Patent

active

052752003

ABSTRACT:
The oil draining control valve comprises a valve housing having a fluid passage and a shaft housing; a valve body pivotally housed in the fluid passage of the valve housing; a rotary shaft also rotatably housed in the shaft housing and engaged with the valve body to pivot the valve body from a closed position to an open position or vice versa; a control lever extending outside through a lever guide slot formed in the valve housing and engaged with the rotary shaft to pivot the valve body; and an elastic member for covering the lever guide slot formed in the valve housing at least when the control lever is pivoted at the closed position. The lever guide slot covering member is a C-shape cross-sectional annular ring, a bellow member, or a blade member, which can prevent the lever guide slot from being clogged with muddy water or grass for providing a smooth valve control operation.

REFERENCES:
patent: 2121553 (1938-06-01), Stewart et al.
patent: 2691988 (1954-10-01), Weatherhead, Jr.
patent: 3443789 (1969-05-01), Glasgow et al.
patent: 4078763 (1978-03-01), Yamamoto

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