Patent ID: 6361470
Filing Date: 2002-03-26
Classification: F16H,Y10T

Abstract:
An adjustable pulley comprising:a shaft rotatable about a predetermined axis at a plurality of different speeds; a first flange rotatable with said shaft; a second flange rotatable with and movable axially of said shaft toward and away from said first flange; fluid-operated means for moving said second flange toward and away from said first flange, including at least one first chamber arranged to receive a hydraulic fluid to thus generate a force tending to move said second flange toward said first flange, and an additional chamber arranged to receive and confine hydraulic fluid at a plurality of different pressures to thus generate a variable second force tending to move said second flange away from said first flange; and a valve rotatable with said shaft and arranged to regulate the outflow of hydraulic fluid from said additional chamber in dependency upon the rotational speed of said shaft.