ELECTRIC MOTOR
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United States of America Patent
Stats
-
N/A
Issued Date -
Feb 21, 2008
app pub date -
Aug 13, 2007
filing date -
Aug 15, 2006
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
An electric motor has a housing with at least two housing parts (24, 86), within which a stator (82) is arranged. The motor further includes an internal rotor (38) mounted on a shaft (34), the rotor interacting with the stator (82) and being separated from it by an air gap (88). The shaft (34) is rotatably supported in the housing by roller bearings (30, 72). A first one (30) of the roller bearings has an inner ring (32) secured at a first predetermined position on the shaft (34), and an outer ring (28) secured in a recess (26) of a first housing part (24). A second one (72) of the roller bearings has an inner ring (70) secured at a second predetermined position on the shaft (34) and an outer ring (74) arranged in an associated recess (96) of a second housing part (86). The second roller bearing (76) is urged, by an ondular washer (98) in said recess (96), axially in the direction of the first roller bearing (30) when the first housing part (24) and the second housing part (86) are assembled together.
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