Patent ID: 7588169
Filing Date: 2009-09-15
Classification: G01F

Abstract:
1. A method for volumetrically dispensing a fluid material comprising: a) filling an accumulating chamber of a volumetric dispenser with a fluid material until a mechanical level sensor signals the cessation of said filling; and b) removing said material from said volumetric dispenser by means of an exit valve attached to said accumulating chamber of said volumetric dispenser; c) wherein said volumetric dispenser comprises said accumulating chamber, a material entry port attached to said accumulating chamber and having a bottom comprising an exit valve, an attached level sensing chamber having a top, a side, and a bottom, an inlet conduit providing fluid communication between said top of said level sensing chamber and said accumulating chamber by means of an inlet port, a sensor wheel in said level sensing chamber having a circumference with at least three wells about said circumference, a control circuit on said side of said level sensing chamber, an outlet port at said bottom of said level sensing chamber and providing fluid communication between said level sensing chamber and said accumulating chamber, and means for said control circuit to detect when said sensing wheel rotates, wherein upon material filling said accumulating chamber, excess material enters said inlet port and falls upon said sensing wheel, thereby rotating said sensing wheel such that said control circuit detects said rotation of said sensing wheel and signals the cessation of the material filling said accumulating chamber.