(under the class definition) Device provided with (1) means which react to the presence or motion of a fluid in the surrounding atmosphere to move or permit movement of a closure, or (2) a means connected to the closure and movable by ambient fluid to move the closure.
(1) Note. Included in this subclass are storm doors having relief vents for relieving the air pressure or vacuum between the storm door and the exterior house door.
(2) Note. The word "ambient" is intended to exclude the fluid of a fluid motor operator, which operators are classified below, for example, in subclass 324.
SEE OR SEARCH THIS CLASS, SUBCLASS:
10, for a stream spanning closure responsive to the amount or velocity of water in the stream, especially subclass 11 for a float controlled operator or latch release for such a closure.
89, for a louver closure biased to an open position in which the surface of the louvers is exposed to the action of a fluid, such as air or rain, which acts in opposition to the biasing means.
386, for a swinging closure which is counterbalanced to a desired position, and wherein the surface of the closure is exposed to the action of a fluid, such as air, against action of the counterbalance. SEE OR SEARCH CLASS
114, Ships,
118, for a bulkhead door which automatically closes on the
entry of water to a certain height.
116, Signals and Indicators,
69, for alarms actuated by the fall of rain, and subclass 70 for alarms actuated by a variation in fluid pressure.
137, Fluid Handling,
388, for a liquid level responsive device which excludes an external liquid from a gas inlet or outlet such as a shipboard ventilator.
160, Flexible or Portable Closure, Partition, or Panel,
5, for rain actuated initiations for closures of the type found in that class.
200, Electricity: Circuit Makers and Breakers,
61.04, for a liquid or moisture responsive circuit maker or breaker.
