Thermostatically operated sleeve valve construction

DETAILED DESCRIPTION What is claimed is: 1.
In a thermostatically operated valve construction having a tubular sleeve valve member for opening and closing an annular valve seat of the construction at one end of said tubular sleeve valve member and a temperature responsive device interconnected to said sleeve valve member for moving said sleeve valve member relative to said valve seat in relation to sensed temperature, said sleeve valve member having means projecting from said one end thereof into and closely adjacent said annular valve seat when said sleeve valve member is between a closed position and a partially open position to thereby meter the flow through said valve seat during a substantial portion of the initial opening movement of said sleeve valve member, said means of said sleeve valve member comprising an annular part that defines substantially a frusto-conical outer peripheral configuration, said annular part having another annular outer peripheral configuration extending from the smaller end of said frusto-conical configuration, said other annular outer peripheral configuration being substantially frusto-conical, the improvement wherein said annular part has a portion thereof disposed inside said one end of said sleeve valve member and has an outwardly directed transverse annular flange abutting said one end of said sleeve valve member.




Description:
This invention relates to an improved engine coolant system and a thermostatically operated valve construction for such a system or the like.
It is well known that engine coolant systems have been provided wherein each has a thermostatically operated valve construction disposed between the engine radiator and the flow of coolant from the engine so that at temperatures of the coolant below the start-to-open temperature of the valve construction, all of the coolant is diverted or by-passed by the valve construction to a bypass circuit that leads to the water pump inlet so that no coolant will flow to the radiator.
As the temperature reaches the start-to-open temperature of the valve construction, the flow of coolant from the engine is diverted to the radiator and bypass circuits in a proportion depending on the actual value of the temperature of the coolant from the engine