(under subclass 34) Subject matter in which means are provided for connecting the armature or primary windings of one or more electric motors in series circuit relationship with the armature or primary windings of one or more other electric motors at one time and in parallel circuit relationship at another time; or for connecting the armature or primary windings of one or more electric motors in series circuit relationship with the armature or primary windings of one or more other electric motors, and simultaneously connecting the armature or primary circuit of one or more electric motors in parallel circuit relationship with the armature of primary circuit of one or more other electric motors.
(1) Note. In the simultaneous series parallel relationship set forth in the latter half of the above definition, one or
more of the motors connected in the series circuit relationship may constitute one or more of the motors which are connected in the parallel relationship.
SEE OR SEARCH THIS CLASS, SUBCLASS:
83+, for this subject matter where the series parallel connection of armature of primary circuits of the motors is for running speed control.
84, and 97, for series parallel connections of field windings of plural motors for running speed control and acceleration control, respectively.
93, and 95+, for this subject matter where the series parallel connection of the armature or primary circuits is for acceleration control. 95, see subclass 93 above.
97, see subclass 84 above.
497, and the subclasses specific in the Notes thereto, for motor systems having series parallel connections of plural armature or primary windings of a single electric motor.
SEE OR SEARCH CLASS
307, Electrical Transmission or Interconnection Systems,
37, for plural load circuit systems in which the load circuits may be connected either in a series or parallel relationship, and subclass 71 for systems of plural electrical sources in which the sources may be connected either in a series or parallel relationship.
315, Electric Lamp and Discharge Devices: Systems,
192, and the Search Notes thereto for series parallel connected lamps and space discharge devices.
320, Electricity: Battery or Capacitor Charging or Discharging, appropriate subclasses for series or parallel connection of batteries in a system for charging or discharging a battery, especially
