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Class Information
Number: 73/271
Name: Measuring and testing > Volume or rate of flow > Expansible chamber > Diaphragm or collapsible wall > Single diaphragm > With fluid actuated valve
Description: Meters wherein the valves controlling the induction and eduction of the measuring chambers are actuated by pressure of the metered fluid when a definite pressure builds up behind the diaphragm at the end of its stroke.

Patents under this class:

Patent Number Title Of Patent Date Issued
7266444 Driver load measuring method, device, and program for a vehicle accompanied by attitude changes, and storage medium for storing the program Sep. 4, 2007
4809549 Apparatus for metering, measuring, or dosing flowing media Mar. 7, 1989
4067239 Adding flowmeter Jan. 10, 1978
4043332 Constant flow rate liquid medicament administering device Aug. 23, 1977

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