Patent ID: 7216579

Claim:
An apparatus intended for use in selectively controlling or adjustably metering a flow of fluid through a common passage and through first and second passages, comprising: a rotatable body having first and second axially spaced openings in selective fluid communication with the common passage and the first and second passages as the body rotates; a piston associated with each opening and capable of moving therein between a first position and a second, displaced position; first and second non-concentric engagement structures for engaging and selectively moving the piston associated with each of the first and second openings between the first and second positions as the body rotates for directing the fluid flow through only the first passage, only the second passage, or proportionally through both the first and second passages; and a cradle for supporting the engagement structures, wherein the cradle is pivotally mounted and movable in a first direction such that the first engagement structure moves the piston in the first opening as the body rotates and a second direction such that the second engagement structure moves the piston in the second opening as the body rotates, wherein the first direction is generally opposite the second direction.