Automatic valve closer to prevent tampering with a thermostatic

Details Automatic valve closer to prevent tampering with a thermostatic Automatic valve closer to prevent tampering with a thermostatic

1984-02-09

1985-12-17

Tapolcai, William E.

Automatic temperature and humidity regulation

Heating radiator

Thermostatic

1373292, 236DIG2, F24F 1106

Patent

active

045588198

ABSTRACT:
A tamper proof cartridge for use in nonelectric thermostatic valve sensors is disclosed. The usual cartridge includes a temperature sensor, operably connected to a push rod and an upper elongated stem by a spring. The upper stem terminates in an orifice sealer. The upper stem and sealer are of predetermined measurements to sealingly fit a valve orifice with a seat face. The improvement includes a lower extension of the upper stem extending below the orifice which terminates in an additional orifice sealer. The lower extension is of a predetermined length to insure that the additional orifice sealer permits flow of heat while the temperature sensor is operational and calls for the orifice to be open. The additional sealer is of sufficient width to seal the orifice. The disconnection of the sensor will cause the spring to urge the stem upward causing the additional orifice sealer to then sealingly fit the orifice, thereby restricting the heat from flowing through the valve.

REFERENCES:
patent: 862614 (1907-08-01), Davey
patent: 1226175 (1917-05-01), Bibleheiser, Jr.
patent: 1242864 (1917-10-01), Ricks
patent: 1905942 (1933-04-01), Lawler
patent: 2387793 (1945-10-01), Holmes
patent: 2833301 (1958-05-01), Argus
patent: 2845083 (1958-07-01), Graybill
patent: 3405729 (1968-10-01), Young et al.
patent: 4089461 (1978-05-01), Gocke

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