Variable speed drive

Details Variable speed drive Variable speed drive

F - Mech Eng,Light,Heat,Weapons

16

H

74/222

F16H 9/26 (2006.01) F16H 55/56 (2006.01)

Patent

CA 1046798

VARIABLE SPEED DRIVE E Abstract of the Disclosure A variable speed drive includes a planetary set of two ad- justable V-belt pulleys orbitally driven around a nonrotatable, or fixed, adjustable sun pulley and a rotatable, adjustable output sun pulley attached to an output shaft. The orbiting planet pulleys are carried on a radial arm driven by the input shaft and have adjustable, inversely proportional effective diameters which are wrapped by V-belts connecting the planet pulleys to the sun pulleys. The effective diameter of the fixed sun pulley is ad- justed by a control rod and the effective diameter of the output sun pulley is biased towards its maximum effective diameter. When all four pulleys are at the same effective diameter, orbiting of the planetary set will produce zero output. When the effective diameter of the fixed sun pulley is varied by the control rod, the V-belts will assume new effective diameters on all four pulleys causing the output speed to vary. The output speed can be varied without an interruption of power from the zero output position to a maximum forward or reverse depending upon whether the effective diameter of the non-rotating sun pulley is respectively decreased or increased from the zero output effective diameter.

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