|  | 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

LIGHTING; HEATING

|  | F21 |
LIGHTING (electric aspects or elements, see section H, e.g. electric light sources Fulltext... Hierarchy... Expanded...H01J, Fulltext... Hierarchy... Expanded...H01K, Fulltext... Hierarchy... Expanded...H05B)

|  | F21 |
Note(s) Attention is drawn to Note III of Section H, and in particular that subclass Fulltext... Hierarchy... Expanded...H05B covers electrical aspects of the same technical subjects that are covered by class Fulltext... Hierarchy... Expanded...F21.

|  | F21S |
NON-PORTABLE LIGHTING DEVICES OR SYSTEMS THEREOF (burners Fulltext... Hierarchy... Expanded...F23D) [1,7]

|  | F21S |
Note(s) This subclass covers devices or systems intended for fixed installation, e.g. vehicle lighting, or for use at a permanent location, e.g. free-standing floor- or table-lamps. [7] This subclass does not cover devices or systems specially adapted for transportation, which are covered by subclass Fulltext... Hierarchy... Expanded...F21L. [7] Non-electric lighting devices or systems are classified in groups Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...F21S 11/00-F21S 15/00 only if a special adaptation related to the use of a non-electric light source is of interest. [2009.01]

|  | F21S |
Subclass index
ELECTRIC DEVICES |
Systems | 2/00
String or strip of light sources | 4/00
Free-standing | 6/00
Fixed installation | 8/00
Built-in power supply | 9/00
Producing varying lighting effects | 10/00
NON-ELECTRIC DEVICES |
Using daylight | 11/00
Light source: Point-like or of unspecified shape | 13/00
Other devices | 15/00
COMBINATIONS OF ELECTRIC AND NON-ELECTRIC DEVICES | 19/00

P:60 |  | F21S 2/00 |
Systems of lighting devices, not provided for in main groups Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...F21S 4/00-F21S 10/00 or Fulltext... Hierarchy... Expanded...F21S 19/00, e.g. of modular construction [7]

P:20 |  | F21S 4/00 |
Lighting devices or systems using a string or strip of light sources [7]

P:40 |  | F21S 6/00 |
Lighting devices intended to be free-standing (Fulltext... Hierarchy... Expanded...F21S 9/00, Fulltext... Hierarchy... Expanded...F21S 10/00 take precedence) [7]

P:50 |  | F21S 8/00 |
Lighting devices intended for fixed installation (Fulltext... Hierarchy... Expanded...F21S 9/00, Fulltext... Hierarchy... Expanded...F21S 10/00 take precedence; using a string or strip of light sources Fulltext... Hierarchy... Expanded...F21S 4/00) [7]

|  | F21S 8/02 |
· | of recess-mounted type, e.g. downlighters (Fulltext... Hierarchy... Expanded...F21S 8/10 takes precedence) [7]

|  | F21S 8/04 |
· | intended only for mounting on a ceiling or like overhead structure (Fulltext... Hierarchy... Expanded...F21S 8/02 takes precedence) [7]

|  | F21S 8/08 |
· | with a standard [7]

|  | F21S 8/10 |
· | specially adapted for vehicles (arrangement of signalling or lighting devices, the mounting or supporting thereof or circuits therefor, for vehicles in general Fulltext... Hierarchy... Expanded...B60Q) [7]

P:30 |  | F21S 9/00 |
Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply

P:10 |  | F21S 10/00 |
Lighting devices or systems producing a varying lighting effect [7]

P:70 |  | F21S 11/00 |
Non-electric lighting devices or systems using daylight (windows or the like Fulltext... Hierarchy... Expanded...E06B)

P:80 |  | F21S 13/00 |
Non-electric lighting devices or systems employing a point-like light source (candle holders Fulltext... Hierarchy... Expanded...F21V 35/00); Non-electric lighting devices or systems employing a light source of unspecified shape

P:90 |  | F21S 15/00 |
Non-electric lighting devices or systems employing light sources not covered by main groups Fulltext... Hierarchy... Expanded...F21S 11/00, Fulltext... Hierarchy... Expanded...F21S 13/00 or Fulltext... Hierarchy... Expanded...F21S 19/00

P:0 |  | F21S 19/00 |
Lighting devices or systems employing combinations of electric and non-electric light sources; Replacing or exchanging electric light sources with non-electric light sources or vice versa