Automatic shutoff device

Fluent material handling – with receiver or receiver coacting mea – Automatic control of flow cutoff or diversion – Level or overflow responsive

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Details

141198, 141392, 141214, B65B 130

Patent

active

045560935

ABSTRACT:
An automatic shutoff device of the type which makes use of a venturi to terminate the flow of a liquid into a container when the liquid in the container reaches the level of the discharge tube. A movable housing is operatively positioned downstream of a constrictive nozzle giving rise to the venturi and a consequent low pressure area; the movable housing substantially encompasses the low pressure area except that the downstream end of the housing is open and may serve as a discharge tube from which liquid flows into the container to be filled, the filling operation continues until such time as the level of the liquid reaches the level of the discharge tube at which time liquid is rapidly drawn into the low pressure area causing the housing to move in the downstream direction thereby overcoming the restoring force of an associated spring biased valve causing the valve to seat to thereby substantially terminate the flow of liquid.

REFERENCES:
patent: 2073360 (1937-03-01), Bickley
patent: 2111852 (1938-03-01), Flinchbaugh
patent: 2326251 (1943-08-01), Piquerez
patent: 2330704 (1943-09-01), Grise
patent: 2527760 (1950-10-01), Piquerez
patent: 2597402 (1952-05-01), Sweeny et al.
patent: 2703195 (1955-03-01), Froidevaux
patent: 2869593 (1959-01-01), Zieg

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