Drive unit
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United States of America Patent
Stats
-
Jan 6, 1998
Grant Date -
N/A
app pub date -
Jul 26, 1996
filing date -
Dec 27, 1993
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The object of the present invention is to provide a drive unit including a movable gear section having a first pinion gear and a second pinion gear, which are coaxially integrated. A driving mechanism is provided for spinably moving the movable gear section in a circular orbit. A fixed ring gear is coaxial arranged relative to the circular orbit, the fixed ring gear having a first gear section, formed on a circumferential face, wherein the first pinion gear is engaged with the first gear section, and wherein the movable gear section is spun when the movable gear section is moved in the circular orbit. An output ring gear is coaxial positioned relative to the fixed ring gear and is capable of rotating with respect thereto. The output ring gear includes a second gear section, formed on a circumferential face, wherein the second pinion gear is engaged with the second gear section, and wherein the output ring gear is rotated when the movable gear section is spun. The driving mechanism includes a hollow cylindrical member being provided on the inner side of the movable gear section and coaxial to the circular orbit, and capable of spinning about its axis. In addition, a driving member is provided for spinning the hollow cylindrical member, the driving member being accommodated in the hollow cylindrical member.
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