US Patent 7168598 Device for dispensing a product

A device for dispensing a product may comprise a variable-volume receptacle for containing the product and a dispenser head associated with the receptacle. The dispenser head may be rotatable about an axis of rotation. The device may further comprises an outlet orifice in the dispenser head and a dip tube configured to extend into the receptacle. The dispenser head may be movable between a dispensing position in which flow communication between the outlet orifice and an inside of the receptacle is established, and a closed position in which flow communication between the outlet orifice and the inside of the receptacle is interrupted. The product may be dispensed from the outlet orifice in response to a reduction in the volume of the inside of the receptacle.