TRANSMISSION SYSTEM FOR TRANFER CASE
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United States of America Patent
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Issued Date -
Feb 5, 2015
app pub date -
Jul 30, 2014
filing date -
Jul 31, 2013
priority date (Note) -
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status (Latency Note)
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Abstract
A transmission system for a transfer case can change a high range mode to a low range mode without a shifting shock even while a vehicle is traveling at a constant speed. The transmission system includes a hydraulic system including a hydraulic circuit and a hydraulic cylinder connected to the hydraulic circuit and receiving a hydraulic pressure from a hydraulic pressure source. The transmission system further includes a clutch piston apparatus mounted on a housing of the transfer case and including a clutch piston receiving a hydraulic pressure from the hydraulic pressure source. An operating rod of the hydraulic cylinder is connected to a shift sleeve, and the clutch piston of the clutch piston apparatus is connected to the ring gear of the planetary gear assembly to make the ring gear not rotate according to the operation of the clutch piston supplied with the hydraulic pressure.
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