|  | F |
SECTION F — MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING

|  | F01 - F04 |
Subsection index
MACHINES |
positive displacement |
rotary or oscillating piston |
liquid and elastic fluid or elastic fluid | F01C
liquid only | F04C
reciprocating piston or other |
liquid and elastic fluid or elastic fluid | F01B
liquid only | F04B
non-positive displacement |
liquid and elastic fluid or elastic fluid | F01D
liquid only | F03B
ENGINES |
positive displacement |
rotary or oscillating piston |
liquid and elastic fluid or elastic fluid | F01C
liquid only | F03C
reciprocating piston or other |
liquid and elastic fluid or elastic fluid | F01B
liquid only | F03C
non-positive displacement |
liquid and elastic fluid or elastic fluid | F01D
liquid only | F03B
PUMPS |
positive displacement |
rotary or oscillating piston | F04C
reciprocating piston or other | F04B
non-positive displacement | F04D

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]

P:30 |  | F15C 1/00 |
Circuit elements having no moving parts

P:20 |  | F15C 3/00 |
Circuit elements having moving parts (valves, construction of valves Fulltext... Hierarchy... Expanded...F16K)

P:0 |  | F15C 4/00 |
Circuit elements characterised by their special functions

P:40 |  | F15C 5/00 |
Manufacture of fluid-circuit elements; Manufacture of assemblages of such elements

P:10 |  | 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]