F
SECTION F — MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  
ENGINEERING IN GENERAL
 F15
FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
 F15C
FLUID-CIRCUIT ELEMENTS PREDOMINANTLY USED FOR COMPUTING OR CONTROL PURPOSES (transducers F15B 5/00; fluid dynamics in general F15D; computers comprising fluid elements G06D, G06G)
 F15C 1/00
Circuit elements having no moving parts
 F15C 1/02
·  Details
 F15C 1/04
·  ·  Means for controlling fluid streams to fluid devices, e.g. by electric signals
 F15C 1/06
·  ·  Constructional details; Selection of specified materials
 F15C 1/08 - 
F15C 1/20

Note(s)

Group F15C 1/22 takes precedence over groups F15C 1/08-F15C 1/20[2]

 F15C 1/08
·  Boundary-layer devices, e.g. wall-attachment amplifiers  [2]
 F15C 1/10
·  ·  for digital operation, e.g. to form a logical flip-flop, OR-gate, NOR-gate
 F15C 1/12
·  ·  ·  Multiple arrangements thereof for performing operations of the same kind, e.g. majority gates, identity gates
 F15C 1/14
·  Stream-interaction devices; Momentum-exchange devices, e.g. operating by exchange between two orthogonal fluid jets
 F15C 1/16
·  Vortex devices, i.e. devices in which use is made of the pressure drop associated with vortex motion in a fluid
 F15C 1/18
·  Turbulence devices, i.e. devices in which a controlling stream will cause a laminar flow to become turbulent
 F15C 1/20
·  Direct-impact devices, i.e. devices in which two collinear opposing power streams are impacted
 F15C 1/22
·  Oscillators  [2]
 F15C 3/00
Circuit elements having moving parts (valves, construction of valves F16K)
 F15C 3/02 - 
F15C 3/14

Note(s)

Group F15C 3/16 takes precedence over groups F15C 3/02-F15C 3/14[2]

 F15C 3/02
·  using spool valves
 F15C 3/04
·  using diaphragms (connection of valves to inflatable elastic bodies B60C 29/00)
 F15C 3/06
·  using balls
 F15C 3/08
·  using reeds
 F15C 3/10
·  using nozzles or jet pipes
 F15C 3/12
·  ·  the nozzle or jet pipe being movable
 F15C 3/14
·  ·  the jet from the nozzle being intercepted by a flap
 F15C 3/16
·  Oscillators  [2]
 F15C 4/00
Circuit elements characterised by their special functions
 F15C 5/00
Manufacture of fluid-circuit elements; Manufacture of assemblages of such elements
 F15C 7/00
Hybrid elements, i.e. circuit elements having features according to groups F15C 1/00 and F15C 3/00  [2]