Patent ID: 8678228

Claim:
A liquid metering assembly, comprising: a container for enclosing a source of a liquid to be dispensed; a container cap for engaging and enclosing the source of fluid within the container, and wherein the container cap defines a dispensing aperture, and a vent aperture; a moveable diaphragm releasably cooperating with the container cap, and coupled in fluid flowing relation relative to the dispensing aperture, and wherein the moveable diaphragm further has a valve member; and a moveable liquid volume control member having a main body which has a thickness dimension which is variable, and which sealably, and matingly cooperates with the moveable diaphragm, and which further defines a liquid receiving chamber, and a fluid flowing aperture which extends therethrough, and wherein the liquid receiving chamber of the movable liquid volume control member further defines a multiplicity of fluid flowing channels which each have a predetermined length and width dimension, and a variable depth dimension as defined by the variable thickness dimension of the main body of the liquid volume control member, and which are further individually oriented in fluid receiving relation relative to the fluid flowing aperture, and wherein the valve member is received in the fluid flowing aperture, and is moveable relative thereto when a suction is applied to the dispensing aperture of the container cap, and wherein a selective movement of the liquid volume control member relative to the moveable diaphragm orients one of the multiplicity of fluid flowing channels in fluid receiving relation relative to the fluid flowing aperture, and in fluid delivering relation relative to the dispensing aperture of the container cap, and wherein the selective movement of the liquid volume control member relative to the moveable diaphragm varies a volume of the liquid which is dispensed from the container when a given amount of suction is applied to the dispensing aperture; and a movement limiting member defined by the moveable liquid volume control member and which is positioned in the liquid receiving chamber thereof, and which limits the motion of the movable diaphragm relative to the moveable liquid volume control member.