Starter drive assembly and method of starting an engine
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United States of America Patent
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Sep 6, 2011
Grant Date -
Apr 1, 2010
app pub date -
Nov 13, 2008
filing date -
Sep 29, 2008
priority date (Note) -
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Abstract
A starter drive assembly includes a starter output shaft having a plurality of circumferentially-spaced axial grooves, a clutch assembly, and a barrel assembly. The clutch assembly includes a clutch plate configured to engage the axially grooves of the output shaft such that the output shaft and the clutch plate rotate together during an engine starting operation. The clutch assembly further includes a screw shaft selectively matingly couplable to the clutch plate, wherein the screw shaft is configured to engage the clutch plate during rotation in a first direction and disengage the clutch plate in a second direction such that the screw shaft and the clutch plate rotate together in the first direction. The barrel assembly includes a first end configured to threadably engage the screw shaft, and a second end that includes a pinion gear configured to engage the ring gear during the engine starting operation.
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