Automatic temperature and humidity regulation – Motors – Fluid-operated
Patent
1975-05-05
1976-05-11
Rosenthal, Arnold
Automatic temperature and humidity regulation
Motors
Fluid-operated
251 25, 1376256, G05D 2302, F16K 31126
Patent
active
039557600
ABSTRACT:
A thermostatically operated air valve having a valve body, a valve chamber located within the body, a thermal sensor having a push rod extending therefrom into said valve chamber at a first end thereof, a reciprocal valve rod located in the valve chamber with an axial opening therein communicating with a supply of air under pressure, said axial opening of the valve rod communicating with a cylinder located at the second end of said valve chamber, a piston located within said cylinder and slidably mounted on the valve rod for rapid reciprocal movement thereon, an exhaust port in said cylinder having a retractable valving member seated in sealing relationship within said exhaust port, said push rod being in abutting relationship with said valve rod, said push rod extending at a predetermined actuation temperature to push said valve rod into contact with said valving member thereby sealing said axial opening in the valve rod and unseating said valving member from said exhaust port, whereby air in said cylinder is exhausted to the atmosphere and said piston is rapidly forced outwardly toward the second end of said valve chamber whereby communication between said air supply and an exit passageway is established. The exit passageway communicates with an air actuatable device, such as an air driven fan clutch.
REFERENCES:
patent: 2265496 (1941-12-01), Shaw
patent: 3848622 (1974-11-01), Cummings
Ridenour Michael R.
Zabonick Jerry L.
Evans Products Company
Howard Robert E.
Rosenthal Arnold
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