Planetary speed change transmission
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Oct 16, 2001
Grant Date -
N/A
app pub date -
Mar 3, 2000
filing date -
Mar 10, 1999
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
In a planetary speed change transmission wherein an input shaft is drivingly connected, by way of at least one of three planetary gear structures, to an output shaft five forward gears including a direct gear are obtained with three friction clutched and three friction brake structures. In one embodiment, a sixth forward gear is obtained by providing in one of the drive connections between two of the three planetary gear structures a disengageable clutch. In another embodiment, a sixth forward gear is obtained by auxiliary planetary gears which are engaged by an auxiliary ring gear that is connected to a fourth brake structure for locking the auxiliary ring gear. With this arrangement, a seventh forward gear and a second reverse gear can be obtained.
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