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US 4,359,972 AGranted
Thermostatically controlled valve
OwnerNoel C. Calkinsinventor
Life of this patent
Estimating the term…
Abstract
The thermostatically controlled valve is of a type wherein the flow of fluid is increased when the temperature of the fluid is in a low to medium range and decreased as the temperature of the fluid exceeds a desired range. In a preferred embodiment, it makes use of a poppet valve assembly. It is particularly useful to control the temperature at which vaporization occurs in a liquid propane vaporizer utilized in the fuel system of an internal combustion engine.
Claims12
A thermostatically controlled valve which comprises:
- (a) an elongated body having an internal chamber and an inlet port and an outlet port opening into said chamber;
- (b) first valve port means symmetrically disposed in said chamber normal to the axis between said inlet and outlet ports;
- (c) valve means disposed in said chamber and axially movable to and from said valve port means so as to adjust flow rate therethrough;
- (d) a spring disposed in said chamber on the inlet side of said first valve port means, said spring axially opposed to said valve means and biasing it toward a valve open position;
- (e) a temperature-responsive axial-force actuator fixedly connected to said valve means in the inlet side of said chamber;
- and
- (f) means connected to said first valve port means for holding the end of said actuator opposite said first valve port means in fixed spaced relationship to said first valve port means, said connected means placing said inlet port and said actuator in fluid communication with each other, increasing temperature causing expansion of said actuator to move said valve means against said spring, thereby causing said valve means to reduce the flow rate through said first valve port means and hence through said outlet port over at least a portion of the path of said valve means.
4 more elements
A thermostatically controlled valve which comprises:
- a body having an internal chamber and an inlet port and an outlet port opening into said chamber, and
- a cartridge disposed axially in said chamber between said inlet port and said outlet port, said cartridge comprising
- a hollow cylinder crimped at the end nearest to said inlet port,
- first valve port means symmetrically disposed normal to the axis of said cylinder at the end of said cylinder adjacent said outlet port,
- valve means partially disposed in said cylinder, said valve means being axially movable relative to said first valve port means so as to adjust the flow of fluid therethrough,
- a return spring axially opposed to said valve means and biasing it toward a valve open position, and
- a temperature-responsive responsive axial force actuator disposed in said cylinder at the end adjacent to said inlet port, said inlet port and said actuator being in fluid communication with each other, increasing temperature causing expansion of said actuator to move said valve means against the action of said return spring, thereby causing said valve means to reduce the flow rate through said first valve port means and hence through said outlet port over at least a portion of the path of said valve means.
4 more elements
Dependencies are inferred from the claim text.