US PATENT SUBCLASS 116 / 109
.~ Liquid level

Current as of: June, 1999
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116 /   HD   SIGNALS AND INDICATORS

67 R  DF  ALARMS {15}
109.~ Liquid level {1}
110  DF  .~.~> Float {1}

DEFINITION

Classification: 116/109

(under subclass 67) Devices in which the change of a liquid-level sets up an alarm.

(1) Note. Leak, low-water, or overflow alarms are here included.

SEE OR SEARCH THIS CLASS, SUBCLASS:

112, where a flow of the fluid or the check in the flow sets up an alarm.

SEE OR SEARCH CLASS

73, Measuring and Testing, 290+, for liquid level gauges combined with liquid level alarms.

137, Fluid Handling,

558, for fluid handling apparatus combined with a liquid level responsive indicator or alarm.

277, Seal for a Joint or Juncture, for a generic sealing means or process,

320, for a seal combined with a fluid leakage indicator, sampler, or inspection feature.