US PATENT SUBCLASS 388 / 860
.~.~.~ Manual

Current as of: June, 1999
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388 /   HD   ELECTRICITY: MOTOR CONTROL SYSTEMS

848  DF  OPEN LOOP ACCELERATION CONTROL SYSTEM FOR DC MOTOR WITH COMMUTATOR {2}
853  DF  .~ Armature control {2}
855  DF  .~.~ By selectable or variable impedance {2}
860.~.~.~ Manual

DEFINITION

Classification: 388/860

Manual:

(under subclass 855) Subject matter wherein the impedance value of the motor circuit is selected or varied manually.

CROSS-REFERENCE ART COLLECTIONS

NOTE: No paper files exist for these art collections. They are to be used for APS searching. An effective way to use them is to cross search an art collection with a range of subclasses in the schedule of this class, (e.g., Use the search statement "S 388820/CCLS AND 388902/CCLS" to find closed loop analog speed control by frequency modification combined with compensation for voltage fluctuations).