F - Mech Eng,Light,Heat,Weapons – 16 – H
Patent
F - Mech Eng,Light,Heat,Weapons
16
H
74/225
F16H 9/18 (2006.01) B60K 25/02 (2006.01)
Patent
CA 1050304
ABSTRACT A drive system for driving accessories associated with the engine of a vehicle and controlled by the speed of the engine crankshaft, constructed such that the rpm of each accessory is substantially constant over at least the major portion of the normal vehicle operating range regardless of increase in the rpm of the engine and its crankshaft. The drive is so constructed that the input rpm to each accessory increases at substantially the same rate as the rpm of the crankshaft to a first, predetermined speed; then the input to each accessory is substantially constant thereafter regardless of increasing engine speed to a second predetermined crankshaft speed. This second predetermined speed preferably corresponds essentially to the established national speed limit. The system includes variable pulleys which are rotationally associated with the drive and the driven shafts and each has a fixed flange and an axially movable flange. A disc spring and centrifugally responsive means is associated with the disc spring actuated by centrifugal force above the predetermined speed of the drive shaft to change the loading of the spring and effect movement of the movable flange. A disc spring is associated with the movable flange of the second pulley for urging it axially toward the fixed flange thereof.
254314
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