D.C. motor and reversing circuit
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Mar 2, 1999
Grant Date -
N/A
app pub date -
Jul 22, 1997
filing date -
Jul 22, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A D.C. motor and an associated switch circuit for selecting between forward and reverse motor rotation about a motor axis. Two armature winding portions are disposed on an armature core, A magnetic flux source on the stator provides magnetic flux across an air gap for interaction with these winding portions. One winding portion, when energized, causes armature rotation in a forward sense; the other winding portion, when energized, causes armature rotation in a reverse sense. The associated switch circuit contains first circuit branch, including a first selectively operable switch, connected via certain brushes and commutator to include the one winding portion, and a second circuit branch, including a second selectively operable switch, connected via certain brushes and commutator to include the other winding portion. Operation of the first switch to closed position energizes the one winding portion to cause forward rotation; operation of the second switch to closed position energizes the other winding portion to cause reverse rotation.
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Cited Art Landscape
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