Belt-Driven conical-pulley transmission with improved towing suitability
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United States of America Patent
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Issued Date -
Mar 13, 2008
app pub date -
Aug 13, 2007
filing date -
Aug 12, 2006
priority date (Note) -
Abandoned
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Abstract
A conical disk pair for a belt-driven conical-pulley transmission includes a shaft that is rigidly connected to an axially fixed disk, and an axially movable disk that can be shifted axially on the shaft and is rotationally fixed to the shaft. A torque-sensing device has a first shaped surface that is rigidly connected to the shaft and a second shaped surface that is rigidly connected to a sensing piston that surrounds the shaft and is rotatable and axially movable relative to the shaft. The sensing piston engages a rotationally drivable input wheel and can be subjected to hydraulic pressure from the side facing the movable disk. The rotationally fixed and axially movable engagement between the sensing piston and the input wheel is such that the engagement is disconnected when there is torque acting from the movable disk and the sensing piston is not under hydraulic pressure.
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