Metered and active sprayer devices with aerosol functionality - flairosol ii

A liquid dispensing device, comprising:

• a pressure chamber and a dispensing head, the pressure chamber comprising a pressure spring and a pressure piston;
• the dispensing head comprising:
• a piston and a piston chamber;
• a channel in fluid communication with the pressure chamber;
• a valve provided between said channel and said piston chamber;
• an outlet valve;
• and
• an outlet channel.

A method of dispensing a liquid from a device, comprising:

• providing a liquid within an inner container that is surrounded by an outer container;
• providing a pressure chamber within the inner container, the pressure chamber separated from an outlet channel by an outlet valve;
• and
• drawing liquid from the inner container and pumping it under pressure into the pressure chamber until said liquid is at a pressure greater than or equal to a minimum pressure sufficient to open the outlet valve,
• providing a space between the outer surface of the inner container and the inner surface of the outer container, and
• wherein as the liquid is sprayed from the outlet channel a displacement medium enters into the space and causes the inner container to shrink.

A liquid dispensing device, comprising:

• a bladder and a dispensing head, the bladder comprising an bladder intake valve and configured to expand against a resilient force;
• the dispensing head comprising:
• a piston and a piston chamber;
• a channel in fluid communication with the pressure chamber;
• a valve provided between the channel and the piston chamber;
• an outlet valve;
• and
• an outlet channel.