Patent ID: 8517623

Claim:
A liquid dispenser, comprising: a flexible reservoir in which a liquid is stored; a flexible outer shell surrounding said flexible reservoir; a liquid dispensing valve having open and closed positions and lying in fluid communication with said flexible reservoir, said liquid dispensing valve being disposed in said closed position at which to block the flow of the liquid therethrough from said flexible reservoir to a location outside said flexible outer shell, said flexible outer shell being, responsive to a compressive force applied thereto to apply a corresponding compressive force to said flexible reservoir surrounded by said flexible outer shell so that at least some liquid is forced under pressure from said flexible reservoir to said liquid dispensing valve, and said liquid dispensing valve being responsive to a pushing force applied thereto to cause said valve to be disposed in said open position at which the liquid is dispensed to the location outside said flexible outer shell; a liquid emitter located between said flexible reservoir and said liquid dispensing valve to establish a flow path therebetween, the volume of liquid supplied from said flexible reservoir to said liquid dispensing valve depending upon the size of the to path and the viscosity of the liquid stored in said flexible reservoir; and a liquid dispensing head positioned at the exterior of said flexible outer shell, said liquid emitter being surrounded by said liquid dispensing head, and said dispensing valve being carried by said liquid dispensing head, wherein there is a liquid collection area located within said liquid dispensing head and communicating with said liquid emitter such that the at least some liquid is delivered from said flexible reservoir to said liquid collecting area via the flow path established by said liquid emitter, said liquid dispensing valve dispensing the liquid from the liquid collection area within said liquid dispensing head when the compressive force is applied from said flexible outer shell to said flexible reservoir and said valve is disposed in said open position.