Transmission

Details Transmission Transmission

1995-03-28

1996-08-20

Schoeppel, Roger J.

Endless belt power transmission systems or components

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

Structure for variably adjusting radius of rim section

474 52, F16H 5554

Patent

active

055474284

ABSTRACT:
A transmission having at least one variable outer diameter pulley which includes a generally cylindrical pipe having four equally spaced penetrating holes radially disposed in its cylindrical wall, a sealing means having a diaphragm positioned adjacent each of the penetrating holes and fitted to the pipe support, and sliders forming a pulley peripheral face fitted into each penetrating hole to be able to slide smoothly. Each slider is moved by diaphragms in a direction so the pulley outer diameter expands by compressed air supplied through a fluid supply passage in a rotary axle which supports the pulley. Exhausting the compressed air causes the pulley outer diameter to decrease and restores the pulley to its original size by a tension coil spring around the pulley periphery.

REFERENCES:
patent: 1158886 (1915-11-01), Beede
patent: 3106850 (1963-10-01), Clisset

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