US PATENT SUBCLASS 73 / 444
.~ Freely vertical reciprocable float with carried indicium

Current as of: June, 1999
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73 /   HD   MEASURING AND TESTING

32 R  DF  SPECIFIC GRAVITY OR DENSITY OF LIQUID OR SOLID {7}
444.~ Freely vertical reciprocable float with carried indicium {4}
445  DF  .~.~> Continuous test fluid supply
446  DF  .~.~> With section means
447  DF  .~.~> With liquid level responsive gauge or compensator
448  DF  .~.~> Float structure {2}

DEFINITION

Classification: 73/444

(under subclass 32) Devices comprising a vertically reciprocable float, with or without guides, the movement of which is uninhibited by spring, weight beam, indicator actuation or other load.

(1) Note. In apparatus of this subclass the float usually has a co-axial indicator stem or reference indicium which is read relative to the surface of the liquid or other base point or the position of the float as a whole may be visually observed.