Variable speed belt drive

Details Variable speed belt drive Variable speed belt drive

1980-09-02

1983-05-24

Dorner, Kenneth

Endless belt power transmission systems or components

Pulley with belt-receiving groove formed by drive faces on...

Fluid pressure actuator for adjustment of member

474 18, F16H 5556

Patent

active

043848630

ABSTRACT:
A variable speed belt drive in which the axially moveable sheave flange is connected to the drive shaft by a flexible element which performs the function of transmitting the torque from the shaft to the axially moveable flange, and which defines a fluid pressure chamber for applying a variable pressure to the moveable flange for moving the flange axially on the shaft as the pressure in the chamber is varied by the operation of a control device. The flexible element may be an annular member having a generally U-shaped configuration with inwardly extending side walls, one of the side walls being connected to the flange and the other side wall being connected to a flange-like member rigidly mounted on the shaft. Passages are provided through the shaft to connect the chamber with a source of controlled pressure. The hub of the moveable flange is preferably not connected by any direct means, such as keys or splines, to the shaft but, except for the flexible element and related structure, is free to rotate relative to the shaft, and the shaft preferably has a smooth cylindrical surface at the section over which the moveable flange hub moves.

REFERENCES:
patent: 2288114 (1942-06-01), Smith
patent: 2851894 (1958-09-01), Seyfarth
patent: 2877528 (1959-03-01), Long
patent: 3418863 (1968-12-01), Landau
patent: 3451283 (1969-06-01), Rattunde
patent: 3478611 (1969-11-01), Venne et al.
patent: 3552223 (1971-01-01), Glasson et al.
patent: 3600961 (1971-08-01), Rattunde et al.
patent: 3715930 (1973-02-01), Beliveau et al.
patent: 4152947 (1979-05-01), van Deursen
patent: 4161894 (1979-07-01), Glacosa

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