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
1982-05-10
1984-10-23
Staab, Lawrence 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 54, 474 13, 474 49, F16H 5554, F16H 1106, F16H 910
Patent
active
044785941
ABSTRACT:
A combination of a power transmission belt that is to be operated in an endless path and a tensioner for the belt is provided, the tensioner comprising a support unit fixed relatively to the belt, a belt engaging unit carried by the support unit and being movable relative thereto, a biasing unit operatively associated with the support unit and the belt engaging unit urging the belt engaging unit relative to the support unit in a belt tensioning direction against the belt with a force to tension the belt, and a control unit operatively associated with the biasing unit to progressively decrease its urging force on the belt engaging unit as the speed of movement of the belt progressively increases from a certain low speed of movement thereof to a certain high speed of movement thereof.
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patent: 4249425 (1981-02-01), Watson
patent: 4409862 (1983-10-01), Adkins
Dayco Corporation
Diehl Dwight G.
Staab Lawrence J.
Tassone Joseph V.
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