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A motion enhancing mechanism assembly suited for use with fluid control devices such as a piezoelectric modulating actuator of a proportional control valve. Range-limited axial motion of the actuator is transmitted through an amplifier disc to cause tilting of a control plate initially in sealing re

A motion enhancing mechanism assembly suited for use with fluid control devices such as a piezoelectric modulating actuator of a proportional control valve. Range-limited axial motion of the actuator is transmitted through an amplifier disc to cause tilting of a control plate initially in sealing registration with an orifice ridge surrounding a fluid conduit aperture. Tilting of the control plate opens a wedge-like gap through which fluid may flow with larger conductance than is available with a planar gap of uniform height otherwise achievable with the range-limited motion of the actuator.

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1. A valve stroke amplification mechanism assembly, comprising: an amplifier disc constructed from a flat springy material and having an inner segment and an outer periphery, the inner segment centered within the outer periphery and mechanically coupled to and spaced apart from the outer periphery b

1. A valve stroke amplification mechanism assembly, comprising: an amplifier disc constructed from a flat springy material and having an inner segment and an outer periphery, the inner segment centered within the outer periphery and mechanically coupled to and spaced apart from the outer periphery by a pair of passive connecting arms,a first passive connecting arm of the pair of passive connecting arms extending from a first attachment point and a second passive connecting arm of the pair of passive connecting arms extending from a second attachment point, the pair of passive connecting arms connected together by a passive segment having at least one radial connection extending to the outer periphery that mechanically couples the inner segment to the outer periphery, the passive segment positioned off-center within the outer periphery, anda first swivel connecting arm of a pair of swivel connecting arms extending from the first attachment point and a second swivel connecting arm of the pair of swivel connecting arms extending from the second attachment point, the pair of swivel connecting arms connected together by a swivel lever bar such that axial displacement of the inner segment causes asymmetric axial displacement between the passive segment and the swivel lever bar; anda control plate mechanically coupled to the amplifier disc at the first and the second attachment points. 2. The valve stroke amplification mechanism assembly of claim 1, wherein the amplifier disc is configured to flex and the inner segment is coupled to an actuated valve element, and wherein the control plate has a planar surface configured to contact an orifice ridge surrounding a fluid conduit aperture such that the asymmetric displacement causes the planar surface of the control plate to tilt at an angle with respect to a plane of the orifice ridge. 3. The valve stroke amplification mechanism assembly of claim 2, wherein the amplifier disc and the control plate are disposed within a valve chamber and immersed in fluid that flows through the valve chamber, and the control plate is attached to a deflectable portion of the actuated valve element by the amplifier disc. 4. The valve stroke amplification mechanism assembly of claim 3, wherein the control plate is configured to block fluid flow through the valve chamber when the planar surface is positioned parallel to the plane of the orifice ridge. 5. The valve stroke amplification mechanism assembly of claim 2, wherein the amplifier disc and the control plate are disposed within a top-works attached to a valve body comprising the orifice ridge and the fluid conduit aperture. 6. The valve stroke amplification mechanism assembly of claim 5, wherein the orifice ridge is circular and off-center within the valve body. 7. The valve stroke amplification mechanism assembly of claim 2, wherein the planar surface of the control plate includes a recess configured to allow for clearance of edges of the inner segment when the planar surface of the control plate tilts. 8. The valve stroke amplification mechanism assembly of claim 1, wherein at least one of the amplifier disc and the control plate comprise metallic materials. 9. The valve stroke amplification mechanism assembly of claim 8, wherein the metallic materials are at least one of 300 series stainless steel alloys, chromium alloys, and nickel alloys. 10. The valve stroke amplification mechanism assembly of claim 1, wherein at least one of the amplifier disc and the control plate comprise polymer materials. 11. The valve stroke amplification mechanism assembly of claim 10, wherein the polymer materials are at least one of polypropylene, polyvinylidene fluoride, perfluoroalkoxy polymer, polytetrafluoroethylene, polychlorotrifluoroethylene, and polyimide. 12. The valve stroke amplification mechanism assembly of claim 1, wherein each pair of the passive connecting arms and the swivel connecting arms are positioned in a bilaterally symmetrical physical arrangement. 13. The valve stroke amplification mechanism assembly of claim 1, wherein the amplifier disc further comprises a plurality of functional elements positioned in a bilaterally symmetrical physical arrangement. 14. The valve stroke amplification mechanism assembly of claim 13, wherein the plurality of functional elements includes at least one of balance tabs, tooling holes, and torsion bars. 15. The valve stroke amplification mechanism assembly of claim 14, wherein the balance tabs include a first balance tab projecting from the first attachment point and a second balance tab projecting from the second attachment point, the first and the second balance tabs projecting in a direction opposite that of the pair of swivel connecting arms. 16. The valve stroke amplification mechanism assembly of claim 15, wherein the torsion bars include a first torsion bar extending radially from the inner segment and terminating at the first attachment point and a second torsion bar extending radially from the inner segment and terminating at the second attachment point. 17. The stroke amplification mechanism assembly of claim 16, wherein the first and the second attachment points and the first and the second torsion bars define a diameter line of the amplifier disc and the passive segment is spaced apart from the diameter line. 18. The valve stroke amplification mechanism assembly of claim 1, wherein an outer diameter of the amplifier disc is slightly larger than an outer diameter of the control plate. 19. The valve stroke amplification mechanism assembly of claim 1, wherein the first and the second attachment points are positioned in a bilaterally symmetrical physical arrangement. 20. The valve stroke amplification mechanism assembly of claim 1, wherein the at least one radial connection includes a pair of asymmetrically positioned radial connections.