(under the class definition) Structure comprising means to sense a condition and to exercise a control operation of a structure or component thereof in response to said condition.
SEE OR SEARCH CLASS
137, Fluid Handling,
67+, for a destructible or deformable control of a fluid device and subclass 468 for a residual thermal responsive valve.
138, Pipes and Tubular Conduits,
26+, for such a device with a pressure compensator. 169, Fire Extinguishers,
56+, for condition responsive control of an extinguishing system and subclass 42 for a fusible connection, per se.
454, Ventilation,
70+, 75, 229, 238, 239, 255, 256, and 340 for automatic control of ventilating systems.
