US Patent 11064732 Electronic vaporizer cartridge with encased heat source

A cartridge for an electronic smoking device includes a heat source comprising a bulb-encased heating element. The heat source is disposed inside a compartment of the cartridge. The compartment extends from an air flow tube. The housing includes a storage area for retaining inhalant material. The cartridge includes a threaded connector that attaches to a control unit that has a power supply such as a batter. The cartridge avoids direct contact between the inhalant material and any metal components of the cartridge by either eliminating metal components or by encasing the metal components in glass, quartz, or ceramic.