US Patent 9877508 Electronic cigarette

A cartomizer for an electronic smoking article, an electronic smoking article capable of providing a smoking experience without combusting tobacco, and a method of achieving a smoking experience without combusting tobacco are disclosed. The cartomizer can include an annular fluid reservoir having an air flow channel therein; a liquid material within the fluid reservoir; and a heater, which surrounds the fluid reservoir and is operable to heat the fluid reservoir to a temperature sufficient to at least initially volatilize the liquid material contained within the fluid reservoir to form a saturated vapor within the air flow channel.