Eccentric orbiting type driving apparatus
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United States of America Patent
Stats
-
Apr 15, 2003
Grant Date -
Apr 25, 2002
app pub date -
Aug 20, 2001
filing date -
Dec 21, 1999
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A stator (2) is fixed to a casing (1). Bearing supports (5, 6) are fixed to the casing (1), and a rotary shaft (4) is rotatably supported by the bearing supports (5, 6) through bearings (7, 8). A rotor (3) is fixed to the rotary shaft (4), and an orbiting shaft (9) is supported eccentrically and rotatably by the rotary shaft (4) through bearings (10, 11). An upper end of the orbiting shaft (9) is protruded out of the casing (1). An orbiting plate (12) is fixed to the lower section of the orbiting shaft (9), and an Oldham's ring (13) having protrusions (14, 15) is provided between the bearing support (6) and the orbiting plate (12). Grooves (16, 17) orthogonal to each other are provided in the bearing support (6) and the orbiting plate (12), respectively, and the grooves (16, 17) are engaged with the protrusions (14, 15).
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