Motor-contained electric actuator
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United States of America Patent
Stats
-
Jun 21, 2005
Grant Date -
Apr 1, 2004
app pub date -
Jul 16, 2003
filing date -
Jul 19, 2002
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A small motor in a casing has a motor shaft, which has a worm outside the casing. A worm wheel is rotatably mounted to a housing for a reduction mechanism and meshes with the worm. The motor shaft is supported by radial bearings in the housing, and is supported at the bottom by a thrust bearing thereby simplifying the structure. Furthermore, a rotary disc is fixed to the motor shaft to rotate together with the motor shaft. An angle of rotation of the motor shaft is detected by a rotation detector via the rotary disc and converted to a digital signal by an electronic circuit.
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