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 fluidF01C
liquid onlyF04C
reciprocating piston or other
liquid and elastic fluid or elastic fluidF01B
liquid onlyF04B
non-positive displacement
liquid and elastic fluid or elastic fluidF01D
liquid onlyF03B
ENGINES
positive displacement
rotary or oscillating piston
liquid and elastic fluid or elastic fluidF01C
liquid onlyF03C
reciprocating piston or other
liquid and elastic fluid or elastic fluidF01B
liquid onlyF03C
non-positive displacement
liquid and elastic fluid or elastic fluidF01D
liquid onlyF03B
PUMPS
positive displacement
rotary or oscillating pistonF04C
reciprocating piston or otherF04B
non-positive displacementF04D
  
LIGHTING; HEATING
 F21
LIGHTING (electric aspects or elements, see section H, e.g. electric light sources H01J, H01K, H05B)
 F21

Note(s)

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

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

Note(s)

  1. 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]
  2. 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 F21S[7]
  3. Non-electric lighting devices are classified in groups 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
P:10 F21L 2/00
Systems of electric lighting devices (systems employing both electric and non-electric light sources or exchangeable light sources F21L 27/00)  [7]
P:20 F21L 4/00
Electric lighting devices with self-contained electric batteries or cells  [7]
P:30 F21L 13/00
Electric lighting devices with built-in electric generators (with solar cells F21L 4/00)  [1,7]
P:40 F21L 14/00
Electric lighting devices without a self-contained power source, e.g. for mains connection  [7]
P:80 F21L 17/00
Non-electric torches; Non-electric flares
P:70 F21L 19/00
Lanterns, e.g. hurricane lamps or candle lamps (candle holders F21V 35/00)
P:60 F21L 21/00
Non-electric pocket-lamps, e.g. lamps producing sparks
P:50 F21L 23/00
Non-electric hand-lamps for miners
P:90 F21L 26/00
Non-electric portable lighting devices, or systems thereof, not provided for in groups F21L 17/00-F21L 23/00  [8]
P:0 F21L 27/00
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 in lighting devices or systems