Pressure supply to a continuously adjustable automatic transmission in particular a clasping transmission
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United States of America Patent
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Aug 10, 2010
Grant Date -
Nov 16, 2006
app pub date -
May 10, 2006
filing date -
May 11, 2005
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A pressure supply between a variator shaft and a pressure chamber (6) for the axial displacement of the mobile disc of a pair of conic pulleys of a continuously adjustable automatic transmission, which includes a longitudinal borehole (7) and radial boreholes (8, 9) in a variator shaft (1), as well as a radial borehole (10) in the locating disc. For each pressure chamber (6) there are at least two piercing radial boreholes made in the variator shaft, which are axially shifted from each other and rotated approximately 90.degree. between themselves. The oil can run over the longitudinal borehole of the variator shaft and over the radial boreholes through the radial borehole in a locating disc of a pressure chamber (6), in such a way that the oil flow is always ensured regardless of the axial position or of the tangential location of the locating disc regarding the variator shaft.
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