Speed-changing transmission device for vehicles
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United States of America Patent
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-
Sep 3, 1985
Issued Date -
N/A
app pub date -
Aug 18, 1983
filing date -
Apr 10, 1981
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A speed-changing transmission device for vehicles includes a speed-changing shaft connected to rear wheels and disposed at the rear side of an input shaft driven by an engine co-axially with the input shaft, a counter shaft mounted in parallel with the speed-changing shaft and driven by the input shaft, and forward and backward speed-changing gear systems through which the speed-changing gear is connected to the counter shaft to constitute a speed-changing transmission mechanism. A forward one-way clutch is disposed between the input shaft and the speed-changing shaft of the speed-changing mechanism. In the power transmission path formed by the backward speed-changing gear system, provided is a backward clutch and a backward one-way clutch parallel with the backward clutch. The connection between the engine and the speed-changing the speed is turned into 'OFF' state during parking of the vehicle, so that an engine braking effect is obtained to prevent the vehicle from starting naturally.
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