.~.~> With means for effecting other motor interconnections
DEFINITION
Classification: 318/49
(under subclass 34) Subject matter in which there are one or more motors adapted to be connected to one or more sources of electric energy to convert part of the energy into mechanical energy and part into electrical energy and in which there are one or more other motors combined with means for supplying the last named motors with the converted electrical energy.
(1) Note. Arrangements within the definition of this subclass include: (1) a wound-secondary induction motor in the secondary circuit of which is connected the primary or armature windings of another AC motor, both motors, being adapted to perform useful work; (2) A direct current motor adapted to perform useful work and in addition thereto driving a d-c generator the output of which is supplied to another electric motor.
(2) Note. Means may be provided for also connecting the same motors in other relations with each other. For example the circuit may be arranged so that the motors may be connected in cascade, or in series or in parallel.
(3) Note. For cascade arrangements the armatures of the several motors may not be connected conductively in series; that is, the same current may not pass through one motor and then be conducted on to another motor electrically in series with said one motor. Usually, the armature of one motor is connected to the secondary of another (induction) motor. The s:graphic in this Note may be considered to depict plural motors with separate sources of supply, also they may be considered to be electrically in series. [figure]
(4) Note. When electric energy is led to one machine which may be referred to as a "motor" but which serves only to convert electrical energy and to supply the converted energy to a motor which has a mechanical energy output, the first machine is merely considered a converter and not a motor.
SEE OR SEARCH THIS CLASS, SUBCLASS: 45+, for this subject matter where two or more cascade connected motors are mechanically coupled together in a fixed or predetermined ratio of movement.
731+, for doubly fed induction motor systems e.g., where both the primary and secondary windings of the motor are connected to sources of electric energy.
