(under subclass 84.1) Subject matter wherein a specific controlling mechanism, i.e., a valve is used to cut off and separate a portion of a fluid distribution system form another portion.
SEE OR SEARCH THIS CLASS, SUBCLASS:
9.63, for failure responsive apportioning control of multiple motors.
63, for valves responsive to system failure and which charge a motor.
SEE OR SEARCH CLASS
60, Power Plants, particularly
535, for a pulsator with a failure indicator and subclasses 581 and 582 for pulsator structure that provides safety structure.
137, Fluid Handling, particularly 112+, for a valve that selects the highest inlet pressure.
188, Brakes,
151+, for fluid pressure operated brakes often having safety devices.
200, Electricity: Circuit Makers and Breakers,
82+, for a fluid pressure piston which is used as an operator to open or close a circuit and often used in a automobile.
340, Communications: Electrical,
52+, for means automatically responsive to a condition to a vehicle, e.g., a brake fluid pressure monitor.
