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
1995-09-05
1996-12-10
Novosad, Stephen 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 57, 474148, F16H 5554, F16H 5530, F16H 910
Patent
active
055825559
ABSTRACT:
An infinitely variable ratio drive mechanism consisting of at least one variable diameter pulley and a flexible drive belt. A plurality of pulley segments are connected via links to a hub, such that their concerted arcs of motion describe a variable pulley diameter, the segments being biased one to another by resilient force. When two pulleys operate together, the effective diameters of both are adjusted in like direction. The drive pulley diameter is the resultant of a balance between the drive belt force exerted on the individual segments and the opposing resilient force. The plurality of belt engaging members describing the driven pulley adjust opposite the first, their position being actuated in the direction of belt force and restricted by belt length.
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