초록 ▼

The valve has a sphere that is resiliently biased by a resilient lever means to close the outlet orifice leading from the frustoconical seat on which the sphere is seated. Associated with the resilient lever means is an electric-operated actuator that is effective, when energized, to release the res

The valve has a sphere that is resiliently biased by a resilient lever means to close the outlet orifice leading from the frustoconical seat on which the sphere is seated. Associated with the resilient lever means is an electric-operated actuator that is effective, when energized, to release the resilient bias force which the resilient lever means exerts on the sphere. When this happens, a spring that is disposed to bear against the sphere unseats the sphere thereby opening the valve.

대표청구항 ▼

In a valve which is operated by electric-operated actuator means and comprises body structure having a fluid inlet, a fluid outlet, and a frusto-conical seat that circumscribes an orifice and is disposed between said inlet and said outlet, a sphere that is disposed for coaction with said seat to sel

In a valve which is operated by electric-operated actuator means and comprises body structure having a fluid inlet, a fluid outlet, and a frusto-conical seat that circumscribes an orifice and is disposed between said inlet and said outlet, a sphere that is disposed for coaction with said seat to selectively open and close said orifice to fluid flow between said inlet and said outlet, the improvement which comprises resilient lever means on said body structure acting to resiliently urge said sphere along an imaginary axis about which said frusto-conical seat is a surface of revolution toward concentrically seating on said seat and thereby closing said orifice, resilient means acting between said sphere and said body structure in a sense urging said sphere toward eccentricity with said axis, the relative resiliencies of said resilient lever means and said resilient means being selected such that said sphere normally assumes a condition of concentricity with said axis, and means operatively coupling said electric-operated actuator means and said resilient lever means to cause said resilient lever means to selectively operate to a valve closed condition wherein said resiliencies are allowed to be effective on said sphere such that said sphere is caused to assume concentricity with said axis thereby closing said orifice to flow and to a valve open condition wherein said resiliencies are allowed to be effective on said sphere such that said sphere is caused to assume eccentricity with said axis thereby opening said orifice to flow.