Hydrokinetic coupling apparatus in particular for motor vehicle
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United States of America Patent
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May 18, 2004
Grant Date -
Aug 21, 2003
app pub date -
Dec 10, 2001
filing date -
Apr 21, 2000
priority date (Note) -
In Force
status (Latency Note)
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Abstract
The invention concerns an apparatus comprising a housing (12) with a radial wall (14) coupled with another input shaft, a turbine wheel (104) coupled with a hub (54) and an output shaft; and a lockup clutch comprising a piston (40); an annular friction disc (152) with global radial orientation, coupled in rotation with the turbine wheel (104)/hub (54) assembly and bearing on a first surface a first counter-track (210) co-operating with a first friction track (200) integral with the piston to define a first annular friction zone (Z1), and which bears on its second surface opposite to the first surface, a second counter-track (230) co-operating with a second friction track (220) integral with the radial wall (14) to define a second annular friction zone (Z2). The invention is characterized in that the first and second friction zones (Z1, Z2) are radially offset relative to each other.
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