|  | 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 Fulltext... Hierarchy... Expanded...F15B 5/00; fluid dynamics in general Fulltext... Hierarchy... Expanded...F15D; computers comprising fluid elements Fulltext... Hierarchy... Expanded...G06D, Fulltext... Hierarchy... Expanded...G06G)

|  | F15C |
Note(s) Attention is drawn to the Notes following the titles of class Fulltext... Hierarchy... Expanded...B81 and subclass Fulltext... Hierarchy... Expanded...B81B relating to "micro-structural devices" and "micro-structural systems". [7]

|  | 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 Fulltext... Hierarchy... Expanded...F15C 1/22 takes precedence over groups Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...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 Fulltext... Hierarchy... Expanded...F16K)

|  | F15C 3/02 - F15C 3/14 |
Note(s) Group Fulltext... Hierarchy... Expanded...F15C 3/16 takes precedence over groups Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...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 Fulltext... Hierarchy... Expanded...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 Fulltext... Hierarchy... Expanded...F15C 1/00 and Fulltext... Hierarchy... Expanded...F15C 3/00 [2]