|  | 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.

|  | F21H |
INCANDESCENT MANTLES; OTHER INCANDESCENT BODIES HEATED BY COMBUSTION (arrangements thereof Fulltext... Hierarchy... Expanded...F21V 36/00; burners Fulltext... Hierarchy... Expanded...F23D)

|  | F21K |
LIGHT SOURCES NOT OTHERWISE PROVIDED FOR

|  | F21L |
LIGHTING DEVICES OR SYSTEMS THEREOF, BEING PORTABLE OR SPECIALLY ADAPTED FOR TRANSPORTATION (burners Fulltext... Hierarchy... Expanded...F23D) [1,7]

|  | F21L |
Note(s) This subclass covers devices or systems designed or specially adapted to be carried, e.g. by hand, or otherwise transported from place to place, e.g. on wheeled supports, in order to provide illumination as and where required. [7] This subclass does not cover devices or systems intended for fixed installation, e.g. vehicle lighting, or for use essentially at a permanent location, which are covered by subclass Fulltext... Hierarchy... Expanded...F21S. [7] Non-electric lighting devices are classified in groups Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...F21L 17/00-F21L 26/00 only if a special adaptation related to the use of a non-electric light source is of interest. [2009.01]

|  | F21L |
Subclass index
ELECTRIC DEVICES |
Systems | 2/00
with self-contained batteries or cells | 4/00
with built-in generators | 13/00
without self-contained power source | 14/00
NON-ELECTRIC DEVICES |
Torches, flares; lanterns | 17/00; 19/00
Pocket-lamps; miners' hand-lamps | 21/00; 23/00
Other portable lighting devices or systems thereof | 26/00
COMBINATIONS OF ELECTRIC AND NON-ELECTRIC DEVICES | 27/00

|  | 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

|  | F21V |
FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR [1,7]

|  | F21V |
Note(s) Groups Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...F21V 1/00-F21V 14/00 cover details of those parts involved in light emission or distribution. Groups Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...F21V 15/00-F21V 31/00 cover details of those parts not so involved. [2009.01] Details of non-electric lighting devices or systems are classified in groups Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...F21V 35/00-F21V 37/00 only if a special adaptation related to the use of a non-electric light source is of interest. [2009.01]

|  | F21V |
Subclass index
DETAILS OF PARTS INVOLVED IN LIGHT EMISSION OR DISTRIBUTION |
Shades; globes; refractors; reflectors | 1/00; 3/00; 5/00; 7/00
Light guides | 8/00
Light filters | 9/00
Other screens | 11/00
Combinations of elements | 13/00
Changing characteristics or distribution of the light | 14/00
DETAILS OF PARTS NOT INVOLVED IN LIGHT EMISSION OR DISTRIBUTION |
Fastening | 17/00; 19/00
Arrangements for supporting or suspending | 21/00
Arrangements of electric circuit elements | 23/00
Cable stowing | 27/00
Protection; safety; cooling; tightness | 15/00; 25/00; 29/00; 31/00
Combinations with other articles | 33/00
Candle holders | 35/00
Arrangements of mantles or burners | 36/00
Details of combustion lighting | 37/00
SUBJECT MATTER NOT PROVIDED FOR IN OTHER GROUPS OF THIS SUBCLASS | 99/00