Patent ID: 8591134

Claim:
A liquid delivery device comprising: a cap body having a front portion, a back portion, and a lumen extending from the front portion to the back portion, wherein the back portion of the cap is configured to attach to a liquid container having a longitudinal axis, the front portion of the cap body comprises a chamber comprising a front opening positioned in a plane that is angled with respect to a lower surface of said cap body, and the lumen is configured to allow liquid communication from the liquid container to the cap body, a liquid delivery roller, wherein the liquid delivery roller is at least partially housed in the chamber of the front portion of the cap body with a portion of the liquid delivery roller exposed through the front opening of the front portion of the cap body, and wherein the liquid delivery roller rolls freely within the cap body along an axis substantially perpendicular to the longitudinal axis, wherein said roller is not constrained on a fixed axis, and a push button liquid control mechanism attaching to the cap body and controlling the amount of liquid communication through the lumen of the cap body independent of the movement of the liquid delivery roller, wherein the liquid control mechanism further comprises a control end and a liquid control valve, wherein the control end controls the movement of the liquid control valve from a stop position, where the liquid control valve at least partially blocks the liquid communication through the lumen of the cap body, to a flow position, where the liquid control valve opens the lumen of the cap body to allow liquid communication between the liquid container and the cap body.