Hydrodynamic torque converter
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United States of America Patent
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-
Sep 23, 2003
Grant Date -
Jun 20, 2002
app pub date -
Nov 29, 2001
filing date -
Nov 29, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A hydrodynamic torque converter has a converter housing drivable in rotation by an engine, with an impeller. A turbine non-rotatably connected to an output shaft is hydrodynamically coupled to the impeller by way of a stator through an oil circuit. The turbine is axially slidably supported on the shaft. A friction surface on the turbine upon axial displacement of the turbine comes into frictional contact with a counterpart friction surface on the converter housing, thereby producing a lockup clutch effect. The turbine is also connected by way of springs to a coupling element arranged non-rotatably on the shaft. In an alternative configuration the turbine is arranged non-rotatably on the shaft and the lockup clutch action is by way of friction surfaces on a coupling element and on the converter housing. A torsion damper can be provided between the coupling element and the turbine.
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