| 1/00 | Circuit elements having no moving parts |
| 1/02 | Circuit elements having no moving parts Details |
| 1/04 | Circuit elements having no moving parts Details Means for controlling fluid streams to fluid devices, e.g. by electric signals |
| 1/06 | Circuit elements having no moving parts Details Constructional details; Selection of specified materials |
| 1/08 | Circuit elements having no moving parts Boundary-layer devices, e.g. wall-attachment amplifiers |
| 1/10 | Circuit elements having no moving parts Boundary-layer devices, e.g. wall-attachment amplifiers for digital operation, e.g. to form a logical flip-flop, OR-gate, NOR-gate |
| 1/12 | Circuit elements having no moving parts Boundary-layer devices, e.g. wall-attachment amplifiers for digital operation, e.g. to form a logical flip-flop, OR-gate, NOR-gate Multiple arrangements thereof for performing operations of the same kind, e.g. majority gates, identity gates |
| 1/14 | Circuit elements having no moving parts Stream-interaction devices; Momentum-exchange devices, e.g. operating by exchange between two orthogonal fluid jets |
| 1/16 | Circuit elements having no moving parts Vortex devices, i.e. devices in which use is made of the pressure drop associated with vortex motion in a fluid |
| 1/18 | Circuit elements having no moving parts Turbulence devices, i.e. devices in which a controlling stream will cause a laminar flow to become turbulent |
| 1/20 | Circuit elements having no moving parts Direct-impact devices, i.e. devices in which two collinear opposing power streams are impacted |
| 1/22 | Circuit elements having no moving parts Oscillators |
| 3/00 | Circuit elements having moving parts (valves, construction of valves F16K) |
| 3/02 | Circuit elements having moving parts (valves, construction of valves F16K) using spool valves |
| 3/04 | Circuit elements having moving parts (valves, construction of valves F16K) using diaphragms (connection of valves to inflatable elastic bodies B60C 29/00) |
| 3/06 | Circuit elements having moving parts (valves, construction of valves F16K) using balls |
| 3/08 | Circuit elements having moving parts (valves, construction of valves F16K) using reeds |
| 3/10 | Circuit elements having moving parts (valves, construction of valves F16K) using nozzles or jet pipes |
| 3/12 | Circuit elements having moving parts (valves, construction of valves F16K) using nozzles or jet pipes the nozzle or jet pipe being movable |
| 3/14 | Circuit elements having moving parts (valves, construction of valves F16K) using nozzles or jet pipes the jet from the nozzle being intercepted by a flap |