Coaxial linear motor for extended travel
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United States of America Patent
Stats
-
Nov 6, 2001
Grant Date -
N/A
app pub date -
Nov 22, 1999
filing date -
Nov 23, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A multiphase linear motor has an elongated stator with a stack of permanent magnets end-to-end along its length and a coaxial drive coil configuration which is such as to leave a gap permitting mechanical support of the permanent magnets at least at intervals along the length of the stator intermediate its ends. Specifically the drive coils comprise sub-coils with arcuate turns which subtend less than 360.degree. around the motor axis to leave free a gap for the aforementioned mechanical support.
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