Endless belt power transmission systems or components – Pulley with expansible rim means or pulleys with alternately... – Structure for variably adjusting radius of rim section
Patent
1999-05-10
2000-11-28
Bucci, David A.
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 50, 474 56, F16H 902, F16H 5900, F16H 910
Patent
active
061528447
ABSTRACT:
A rotary power source and a continuously variable transmission are coupled together. The continuously variable transmission includes a first shaft, a first pulley coupled to rotate with the first shaft, a second shaft, a second pulley coupled to rotate with the second shaft, and an endless power transfer loop coupled about the first pulley and second pulley. The first pulley is of a variable diameter type to adjust turning ratio relative to the second pulley. This first pulley includes a pulley cage including a number of bars radially spaced apart from one another about the first shaft that are each inclined relative to a rotational axis of the first shaft and define a generally frustoconical shape. The first pulley also includes a disk defining a number of slots each receiving a corresponding one of the bars therethrough. A number of carriers are coupled to the disk to travel along a corresponding one of the slots and a corresponding one of the bars. These carriers hold a band defining a surface in contact with the endless power transfer loop. The band travels with the carriers to correspondingly change an effective diameter of the pulley when the relative position of the pulley cage to the disk is changed.
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Bucci David A.
Kaness Matthew A.
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