US PATENT SUBCLASS 116 / 227
.~ Liquid level
Current as of: June, 1999
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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.
