Automatic temperature and humidity regulation – Thermostatic – Expanding solid
Patent
1975-09-22
1977-05-24
Camby, John J.
Automatic temperature and humidity regulation
Thermostatic
Expanding solid
236 87, 123117A, 123117A, G05D 2302
Patent
active
040250423
ABSTRACT:
A thermally actuated valve assembly comprising a housing having a passage extending therethrough with the passage having an inlet, an outlet and a valve seat therebetween. A thermostatic dish-shaped bimetallic disk constituting a valve member is positioned in the passage and is abruptly movable over center from a first curvature position in which the outer periphery of the disk is in engagement with the valve seat thereby to block communication through the passage and a second curvature position in which the disk is clear of the valve seat to permit the flow of fluid therepast. The disk is movable from its first to its second curvature position upon being subjected to a first temperature and is returnable from its second to its first curvature position upon being subjected to a second temperature. A spring member biases the disk toward the valve seat and holds the disk in sealing engagement therewith when the disk is in its first curvature position. The housing includes an abutment engageable by the center portion of the disk as the disk moves over center from its first to its second curvature position thereby to insure that the periphery of the disk moves clear of the valve seat.
REFERENCES:
patent: 2978879 (1961-04-01), Heidorn
patent: 3361347 (1968-01-01), Reichel et al.
patent: 3506194 (1970-04-01), Resseguie
patent: 3734403 (1973-05-01), Eshelman et al.
patent: 3790077 (1974-02-01), Wisyanski et al.
patent: 3804326 (1974-04-01), McIntire
Doherty, Jr. John
Ting Youn H.
Camby John J.
Haug John A.
McAndrew James P.
Texas Instruments Incorporated
Yuen Henry C.
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