US PATENT SUBCLASS 346 / 72
FLOAT RESPONSIVE OR EXPANSIBLE CHAMBER RESPONSIVE MARKER

Current as of: June, 1999
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346 /   HD   RECORDERS

72FLOAT RESPONSIVE OR EXPANSIBLE CHAMBER RESPONSIVE MARKER

DEFINITION

Classification: 346/72

Recorders wherein a marker is responsive to the movement of a float or the expansion of a chamber.

SEE OR SEARCH THIS CLASS, SUBCLASS:

4+, for recording plural functions of gas or steam engines, where one element of the recorder is responsive to pressure in the engine cylinder.

33+, for recorders having external operating means.

SEE OR SEARCH CLASS

73, Measuring and Testing,

312, for recording, float type, liquid level gauges; subclass 322.5 for floats, per se, and subclass 712 for recording fluid pressure gauges.

92, Expansible Chamber Devices, appropriate subclasses for an expansible chamber device, per se.

137, Fluid Handling, 557, for fluid handling apparatus combined with fluid pressure responsive recorders, subclass 558 for liquid level responsive recorders.