US PATENT SUBCLASS 318 / 93
.~.~.~ Series-parallel connected armature or primary circuits

Current as of: June, 1999
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318 /   HD   ELECTRICITY: MOTIVE POWER SYSTEMS

34  DF  PLURAL, DIVERSE OR DIVERSELY CONTROLLED ELECTRIC MOTORS {22}
90  DF  .~ Acceleration control {4}
92  DF  .~.~ Control of both armature (or primary) and field (or secondary) circuits {1}
93.~.~.~ Series-parallel connected armature or primary circuits

DEFINITION

Classification: 318/93

(under subclass 92) Subject matter in which means are provided for connecting the armature or primary circuits of two or more electric motors in series circuit relationship with respect to each other at one time and in parallel

circuit relationship with respect to each other at another time; or for connecting two or more electric motors in parallel circuit relationship with respect to each other and simultaneously two or more motors in series circuit relationship with respect to each other.

(1) Note. One of more of the motors in the parallel connected group referred to in the latter part of the above definition may constitute one or more of the motors in the series connected group. For example, a single motor may be connected in series with a group of three motors which three motors are all connected in parallel relationship with respect to one another.

SEE OR SEARCH THIS CLASS, SUBCLASS:

95, for plural motor systems having means for connecting the motor armatures in series-parallel connections for acceleration and/or deceleration control.

111, and the subclasses listed under the Search Notes thereto, for other plural motor systems having series-parallel arrangements of the plural motors.

497, and the subclasses specified in the Search Notes thereto, for single motor systems having series-parallel connections of two or more armature or primary windings.