Vortex devices, i.e. devices in which use is made of the pressure

Official title: Vortex devices, i.e. devices in which use is made of the pressure drop associated with vortex motion in a fluid {(vortex chambers F15D1/0015; vortex chambers as resistances F15C1/02; vortex chambers associated with amplifiers for improving the switching time by interaction F15C1/14)}

F15C1/16 (Vortex devices, i.e. devices in which use is made of the pressure) appears on 77 US grants and 45 published applications in this corpus.