| F | SK | SECTION F — MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING |
| F21 | USK | LIGHTING; HEATING |
| F21 | KL | LIGHTING (electric aspects or elements, see section H, e.g. electric light sources H01J, H01K, H05B) |
| F21L | UKL | LIGHTING DEVICES OR SYSTEMS THEREOF, BEING PORTABLE OR SPECIALLY ADAPTED FOR TRANSPORTATION [1, 7] |
|
| F21L 2/00 | HGR | Systems of lighting devices [7] |
| F21L 4/00 | HGR | Devices with self-contained electric batteries or cells [7] |
| F21L 4/02 | UGR1 | | . | characterised by provision of two or more light sources [7] |
|
| F21L 4/04 | UGR1 | | . | characterised by provision of a light source housing portion adjustably fixed to the remainder of the device [7] |
|
| F21L 4/06 | UGR1 | | . | with light source coupled to the remainder of the device solely by cable [7] |
|
| F21L 4/08 | UGR1 | | . | characterised by means for in situ recharging of the batteries or cells [7] |
|
| F21L 13/00 | HGR | Devices with built-in electric generators (with solar cells F21L 4/00) [1, 7] |
| F21L 13/02 | UGR1 | |
| F21L 13/04 | UGR2 | |
| F21L 13/06 | UGR1 | | . | with mechanical drive, e.g. spring |
|
| F21L 13/08 | UGR2 | | . . | by reciprocating pusher actuated by hand |
|
| F21L 14/00 | HGR | Devices without a self-contained power source, e.g. for mains connection [7] |
| F21L 14/02 | UGR1 | | . | capable of hand-held use, e.g. inspection lamps [7] |
|
| F21L 14/04 | UGR1 | | . | carried on wheeled supports [7] |
|
|
| F21L 17/00 | HGR | Torches; Flares |
| F21L 19/00 | HGR | Lanterns, e.g. hurricane lamps, candle lamps |
| F21L 21/00 | HGR | Pocket-lamps, e.g. producing sparks |
| F21L 23/00 | HGR | Miners' hand-lamps |
| F21L 26/00 | HGR | Non-electric portable lighting devices, or systems thereof, not provided for in groups F21L 17/00-F21L 23/00 [2006.01] |
| F21L 27/00 | ZWE |
|
| F21L 27/00 | HGR | Devices or systems employing combinations of electric and non-electric light sources; Replacing electric by non-electric light sources or vice versa |