(under the class definition) Apparatus comprising a control means reacting to the force of the small generally circular fluid currents, or to the electrical or magnetic force generated by motion of the shaft* or an element associated there with in a fluid atmosphere or in a magnetic field.
(1) Note. If any part of the generated fluid or electrical force is used for a purpose other than the control means (as claimed) it is considered to be specific load and is excluded from this Class, see Main Class Definition, section III, (2)
Note, B.
SEE OR SEARCH THIS CLASS, SUBCLASS:
26, for a control means reacting to the force exerted by a fluid whose velocity or pressure has been increased by the runner* or other shaft* associated member.
SEE OR SEARCH CLASS
290, Prime-Mover Dynamo Plants, 4, for a prime mover dynamo plant comprising plural prime movers of the turbine type and having means to control operation of the turbines in response to electrical conditions, and subclasses 51-55 for a prime-mover dynamo plant comprising a turbine or other fluid motor and means to regulate the motor in response to electrical conditions.
364, Electrical Computers and Data Processing Systems,
130+, for data processing control systems wherein the control system is claimed generically, and subclass 528.16 for control of fluid level or volume, subclasses 528.17+ for flow control, and subclasses 528.22+ for turbine or generator control.
702, Data Processing: Measuring, Calibrating, or Testing,
45+, for flow metering, and subclasses 50+ for fluid measurement.
