Patent ID: 7313955

Claim:
A liquid flow meter, comprising: a compartment enclosure formed from an upper case part and a lower case part, said lower case part containing a volumetric measuring container having a specified fluid volume capacity, mounted upon a rotatable pivot having an axis of rotation, said axis of rotation of said volumetric measuring container being determined by location of said rotatable pivot, said volumetric measuring container having a counterbalance weight, and a static filling rotational position of said volumetric measuring container limited by a stop integral with the upper case part, a moment created by said counterbalance weight about said axis of rotation maintains said static filling rotational position until said specified volume capacity is achieved, a plurality of bearing guides affixed to the lower case part of said compartment enclosure for supporting said rotatable pivot, an influent port formed in said upper case part for directing liquid flow into said volumetric measuring container through said compartment enclosure, said influent port located to deliver flow approximately vertically into the approximate center of said volumetric measuring container, an effluent port located in said lower case part for discharge of liquid volume of said volumetric measuring container, said lower case part having sloped bottom and flumage to receive flow discharge of said volumetric measuring container and to direct said liquid volume to said effluent port, and means for counting the number of discharge cycles of the said volumetric container.