Continuously variable chain drive transmission

Details Continuously variable chain drive transmission Continuously variable chain drive transmission

1988-12-08

1989-11-07

Bui, Thuy M.

Endless belt power transmission systems or components

Pulley with expansible rim means or pulleys with alternately...

Structure for variably adjusting radius of rim section

F16H 5554

Patent

active

048788830

ABSTRACT:
A sprocket wheel and control mechanism for a chain or belt drive transmission with a continuously adjustable mechanical advantage has diametrically opposed sprocket, spur and/or friction gears offset from the center of the sprocket wheel. Piston and cylinder assemblies are used to position the sprocket, spur and/or friction gears. There is a mechanism for equalizing the distance from the axis of the sprocket wheel of the sprocket, spur and/or friction gears, the equalizing mechanism using a collection of linear linkage guides such as telescoping sleeves and rods, or a series of intermeshed gears connecting toothed shafts in the manner of a rack and pinion. A valve regulates the hydraulic fluid to the piston and cylinder assemblies on the sprocket wheel.

REFERENCES:
patent: 724449 (1903-04-01), Dumaresq
patent: 2700902 (1955-02-01), Sampiero
patent: 3087349 (1963-04-01), Herting
patent: 3613468 (1971-10-01), Rand
patent: 4295836 (1981-10-01), Kumm
patent: 4498351 (1985-02-01), Ahoor

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