Planetary gear transmission systems or components – Planetary gearing or element – Coaxial teeth around planet pinion engage axially spaced...
Patent
1994-12-27
1997-01-14
Wright, Dirk
Planetary gear transmission systems or components
Planetary gearing or element
Coaxial teeth around planet pinion engage axially spaced...
74409, B23Q 118
Patent
active
055933610
ABSTRACT:
The object of the present invention is to provide a speed changer having a simple structure and great speed changing ratio. In the speed changer of the present invention, a movable gear section has a first pinion gear and a second pinion gear, which are coaxially integrated and which are capable of spinning about their common axis. A motor moves the movable gear section on a circular orbit. A fixed ring gear fixedly encompasses the circular orbit, the fixed ring gear has a first inner gear section, which is formed on an inner circumferential face, wherein the first pinion gear is capable of engaging with the first inner gear section and rolling thereon. An output ring gear rotatably encompasses the circular orbit, the output ring gear is coaxial to the fixed ring gear, the output ring gear has a second inner gear section, which is formed on an inner circumferential face, wherein the second pinion gear is capable of engaging with the second inner gear section and rolling thereon.
REFERENCES:
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patent: 5240462 (1993-08-01), Mochizuki et al.
patent: 5409430 (1995-04-01), Hashimoto et al.
Wright Dirk
Yugen Kaisha Sozoan
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