Transmission auxiliary box seal system
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United States of America Patent
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-
Jul 4, 2006
Grant Date -
Sep 23, 2004
app pub date -
Mar 20, 2003
filing date -
Mar 20, 2003
priority date (Note) -
In Force
status (Latency Note)
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Abstract
The present invention provides a transmission including a main gear box and an auxiliary gear box secured to the main box. The auxiliary gear box includes an auxiliary shaft supporting an auxiliary gear with a clutch collar support on the auxiliary shaft adjacent to the auxiliary gear. The clutch collar is selectively actuatable between engaged and disengaged auxiliary gear positions. A piston housing is connected to the auxiliary gear box and supports solenoids fluidly connected to a piston on a shift shaft. The auxiliary box includes a bore therein supporting the shift shaft. The shift shaft is moveable axially between first and second positions in response to actuation of the solenoids corresponding to the engage and disengaged auxiliary gear positions. The shift shaft supports a shift fork that coacts with the shift collar. The shirt shaft includes an annular groove and a seal is arranged in the annular groove between the auxiliary box housing and the shift shaft for separating transmission fluid from actuating fluid within the piston.
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