Fluid handling – Liquid level responsive or maintaining systems – By float controlled valve
Patent
1986-10-14
1989-06-13
Walton, George L.
Fluid handling
Liquid level responsive or maintaining systems
By float controlled valve
73307, 116228, 137424, 137434, 137558, F16K 3128, F16K 3300, F16K 3700
Patent
active
048383031
ABSTRACT:
A liquid level sensor connects a buoyancy device in a vessel to an end of one member of a two piece mechanical linkage projecting through a flexible pressure sealed opening in the closed end of the sensor body with the outer ends of the two members overlapping and connected by a pivot point. The second member is rigidly secured to a sensor body and defines a fluid pressure receiving passage which connects with a diametrically disposed bore within which a poppet valve is mounted. The poppet valve normally prevents the flow of pressure through the diametrical bore and outward through a radial outlet in the sensor body to actuate an alarm. Upon a deviation of the liquid level in the vessel from the desired level, the buoyancy device produces vertical pivotal movement of the one member of the two piece mechanical linkage which forces the poppet valve to a position permitting pressured fluid to flow therethrough and to energize an alarm.
REFERENCES:
patent: 2022430 (1935-11-01), Nold
patent: 2176494 (1939-10-01), Garske
patent: 2322166 (1943-06-01), Shaw
patent: 3256907 (1966-06-01), Clark et al.
patent: 3688795 (1972-09-01), Taylor
patent: 4483367 (1984-11-01), Ross, Jr. et al.
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