Single or double variable diameter pulley and speed variators in

Details Single or double variable diameter pulley and speed variators in Single or double variable diameter pulley and speed variators in

1989-05-31

1990-01-09

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

474 54, F16H 5554

Patent

active

048925071

ABSTRACT:
Pulley usable in single or double form.
It comprises a guidance structure (3) for segments (4) displaceable in accordance with the setting of the rods (7), which are advantageously symmetrically extended with respect to a pivot (9) and carrying an opposite counterweight. The segments (4) are circular arcs in order to ensure a good adhesion of the belt. Advantageously the counterweights are segments (42), which makes it possible to obtain a double pulley formed from two coaxial pulleys, whose diameters vary in opposite directions. The centrifugal force on segments (4) can be balanced.
Application to continuous speed variators.

REFERENCES:
patent: 663928 (1900-12-01), Pratt
patent: 1838104 (1931-12-01), Meglitz
patent: 3956944 (1976-05-01), Tompkins
patent: 3994180 (1976-11-01), Ackerman
patent: 4273240 (1981-06-01), Selleck

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