US Patent 11744960 Inhaler with vortex tunnel

An inhaler article includes a body extending along a longitudinal axis from a mouthpiece end to a distal end with an endpiece element at the distal end. A capsule cavity is defined within the body and extends along the longitudinal axis. A mouthpiece air channel extends from the capsule cavity to the mouthpiece end. A vortex tunnel is between the endpiece element and the capsule cavity. The vortex tunnel has an air inlet and an air passageway extending from the air inlet to the capsule cavity. The endpiece element is configured to restrict or prevent airflow through the distal end to the capsule cavity and the air inlet and air passageway of the vortex tunnel are configured to enable air to be drawn into the capsule cavity and form a vortex of inhalation air through the capsule cavity.