US PATENT SUBCLASS 116 / 227
.~ Liquid level


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

200  DF  INDICATORS {32}
227.~ Liquid level {1}
228  DF  .~.~> Float {1}


DEFINITION

Classification: 116/227

Liquid level:

(under subclass 200) Devices having means to indicate the plane of the surface of a body of a nongaseous fluid.

(1) Note. The plane of surface is usually determined to be above, below, or at a given vertical position.

SEE OR SEARCH THIS CLASS, SUBCLASS:

264+, for fluid flow and/or the arrival of fluid at a point in a flow path.

SEE OR SEARCH CLASS

73, Measuring and Testing,

290+, for liquid level gauges combined with liquid level indicators.

141, Fluent Material Handling, With Receiver or Receiver Coacting Means, 94+, for indicators combined with filling means, particularly subclasses 95+ for receiver level or pressure indicators.

220, Receptacles,

662+, and see the notes thereto, for structures wherein a transparent panel is mounted in a wall.

222, Dispensing,

51, for dispensers with float level indicators; and subclasses 155+ for dispensers with external gauge tubes.

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.