.~.~.~> Chamber with alternate pressure or vacuum applier
DEFINITION
Classification: 73/864.34
Sample meter or pump:
(under subclass 864) Subject matter including a device comprising a positive displacement means moving or permitting movement of the sample at a controlled rate or frequency from a capture element to a receiver.
(1) Note. Examples of displacement devices are a screw conveyor, an expansible chamber, trap chamber, etc.
SEE OR SEARCH THIS CLASS, SUBCLASS:
863.02, for meters or pumps driven by flow-responsive means.
863.83, for sample metering or pumping devices combined with a source containment means.
