Patent ID: 9174834
Filing Date: 2015-11-03
Classification: B67D,F16K

Abstract:
1. An apparatus for dispensing user-specified volumes of liquid from a container, the apparatus comprising: a computer operatively connected to an electrically-actuable pinch valve, the computer causes the electrically-actuable pinch valve to open for a length of time required to dispense a user-specified volume of liquid from the container, which is coupled to a container discharge tube, the container discharge tube being opened and closed by operation of the pinch valve, the volume of liquid to be dispensed being selectable by a user from a. plurality of different volumes of liquid to dispense, the length of time required to open the pinch valve for a user-selected volume being determined by the computer evaluating a polynomial having coefficients, the coefficients of the polynomial operating on a value representative of a signal obtained by the computer from a sensor coupled to the container, wherein the container has weight and wherein the signal from the sensor represents only a portion of the weight of the container and its contents.