.~ Fluid pressure responsive indicator, recorder or alarm
DEFINITION
Classification: 137/557
(under subclass 551) Apparatus provided with a visual indicator, audible alarm or recorder which is responsive to the pressure of the fluid in the flow path.
SEE OR SEARCH THIS CLASS, SUBCLASS:
213+, for liquid level responsive whistles in diverse fluid containing pressure systems.
227+, for pressure gauges or indicators combined with inflatable article (e.g., tire) filling chucks and/or stems.
524, for means for indicating the bias adjustment of a safety valve.
SEE OR SEARCH CLASS 73, Measuring and Testing,
700+, for fluid pressure gauges, per se.
116, Signals and Indicators,
264+, for fluid flow indicators.
222, Dispensing,
23+, for dispensers having pressure responsive indicators, especially subclass 39 for audible signals.
