(under subclass 34) Subject matter in which means are provided for causing a movable motive element of one or more electric motors to occupy or assume a predetermined relative position or phase with respect to a movable motive element of one or more other electric motors either while stationary or
while in motion.
SEE OR SEARCH THIS CLASS, SUBCLASS:
41+, for plural motor systems having electrical synchronizing interconnections between a plurality of motors for maintaining the motors in substantially constant speed and phase interrelationship.
45+, plural motor systems having a plurality of motors mechanically coupled (e.g., as by a common shaft) in a fixed or predetermined ratio of movement.
52+, for plural motor systems having means for controlling "slipping" or racing of one or more electric motors.
68+, for plural motor systems having speed control systems for controlling the running speed on one or more electric motors relative to the speed of one or more other electric motors including means for maintaining equal speeds and/or the same angular or phase relationships. 437, for single motor systems having means for phasing, or angular or linear positional control, of the motor.
SEE OR SEARCH CLASS
60, Power Plants,
698+, for means for synchronizing plural motors in general.
178, Telegraphy. See the classes referred to in the search notes of
53, for other classes which provide for electrical systems for synchronization of rotary shafts.
307, Electrical Transmission or Interconnection Systems,
85+, for systems for connecting or disconnecting a plurality of previously synchronized generators.
370, Multiplex Communications,
304+, for synchronization of rotary switches in a multiplex system.
375, Pulse or Digital Communications,
354+, for synchronizing systems for pulse communications in general. 416, Fluid Reaction Surfaces (i.e., Impellers),
34, for plural impellers having synchronizing means.
