|  | 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.

|  | 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

P:110 |  | F21V 1/00 |
Shades for light sources

P:120 |  | F21V 3/00 |
Globes; Bowls; Cover glasses (with refracting properties Fulltext... Hierarchy... Expanded...F21V 5/00; with reflecting properties Fulltext... Hierarchy... Expanded...F21V 7/00)

P:80 |  | F21V 5/00 |
Refractors for light sources

P:90 |  | F21V 7/00 |
Reflectors for light sources

P:70 |  | F21V 8/00 |
Use of light guides, e.g. fibre optic devices, in lighting devices or systems (light guides per se, structural details of arrangements with other optical elements Fulltext... Hierarchy... Expanded...G02B 6/00) [4]

P:100 |  | F21V 9/00 |
Light filters (coloured shades Fulltext... Hierarchy... Expanded...F21V 1/00); Selection of luminescent materials for light screens (luminescent materials per se Fulltext... Hierarchy... Expanded...C09K 11/00; electroluminescent light sources per se Fulltext... Hierarchy... Expanded...H05B 33/00)

P:130 |  | F21V 11/00 |
Screens not covered by groups Fulltext... Hierarchy... Expanded...F21V 1/00, Fulltext... Hierarchy... Expanded...F21V 3/00, Fulltext... Hierarchy... Expanded...F21V 7/00 or Fulltext... Hierarchy... Expanded...F21V 9/00

P:50 |  | F21V 13/00 |
Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...F21V 1/00-F21V 11/00 (by means of a combination of two or more elements covered by a single one of main groups Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...F21V 1/00-F21V 11/00, see the relevant group; changing the characteristics or distribution of the light emitted by adjustment of parts Fulltext... Hierarchy... Expanded...F21V 14/00) [1,7]

P:60 |  | F21V 14/00 |
Changing the characteristics or distribution of the light emitted by adjustment of parts (reflectors with provision for adjusting the curvature Fulltext... Hierarchy... Expanded...F21V 7/00; light filters with provision for variation of colour or intensity Fulltext... Hierarchy... Expanded...F21V 9/00; screens using iris-type diaphragms Fulltext... Hierarchy... Expanded...F21V 11/00; adjustable mountings for lighting devices Fulltext... Hierarchy... Expanded...F21V 21/14) [7]

P:40 |  | F21V 15/00 |
Protecting lighting devices from damage (cooling or heating arrangements Fulltext... Hierarchy... Expanded...F21V 29/00; gas-tight or water-tight arrangements Fulltext... Hierarchy... Expanded...F21V 31/00)

P:170 |  | F21V 17/00 |
Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages (of light sources or light holders Fulltext... Hierarchy... Expanded...F21V 19/00; gas-tight or water-tight arrangements Fulltext... Hierarchy... Expanded...F21V 31/00)

P:140 |  | F21V 19/00 |
Fastening of light sources or lamp holders (fastening electric light source solely by the coupling device Fulltext... Hierarchy... Expanded...H01R 33/00)

|  | F21V 19/02 |
· | with provision for adjustment, e.g. for focusing (changing the characteristics or distribution of the light emitted by adjustment of parts Fulltext... Hierarchy... Expanded...F21V 14/00) [1,7]

|  | F21V 19/04 |
· | with provision for changing light source, e.g. turret

P:180 |  | F21V 21/00 |
Supporting, suspending, or attaching arrangements for lighting devices (Fulltext... Hierarchy... Expanded...F21V 17/00, Fulltext... Hierarchy... Expanded...F21V 19/00 take precedence; arrangement of signalling or lighting devices, the mounting or supporting thereof or circuits therefor, for vehicles in general Fulltext... Hierarchy... Expanded...B60Q; stands for supporting apparatus or articles in general Fulltext... Hierarchy... Expanded...F16M 11/00); Hand grips [1,7]

|  | F21V 21/002 |
· | making direct electrical contact, e.g. by piercing (Fulltext... Hierarchy... Expanded...F21V 21/34 takes precedence) [7]

|  | F21V 21/005 |
· | for several lighting devices in an end-to-end arrangement, i.e. light tracks [7]

|  | F21V 21/008 |
· | Suspending from a cable or suspension line [7]

|  | F21V 21/02 |
· | Wall, ceiling, or floor bases; Fixing pendants or arms to the bases (Fulltext... Hierarchy... Expanded...F21V 21/08 takes precedence; bases for movable standing lamps Fulltext... Hierarchy... Expanded...F21V 21/06)

|  | F21V 21/06 |
· | Bases for movable standing lamps; Fixing standards to the bases (Fulltext... Hierarchy... Expanded...F21V 21/08 takes precedence)

|  | F21V 21/08 |
· | Devices for easy attachment to a desired place

|  | F21V 21/10 |
· | Pendants, arms, or standards; Fixing lighting devices to pendants, arms, or standards (adjustable mounting Fulltext... Hierarchy... Expanded...F21V 21/14; construction of posts not peculiar to use with lighting devices Fulltext... Hierarchy... Expanded...E04H 12/00)

|  | F21V 21/13 |
· | Spring-loaded poles fixed at both ends [7]

|  | F21V 21/14 |
· | Adjustable mountings

|  | F21V 21/34 |
· | Supporting elements displaceable along a guiding element

|  | F21V 21/36 |
· | Hoisting or lowering devices, e.g. for maintenance (Fulltext... Hierarchy... Expanded...F21V 21/14 takes precedence)

|  | F21V 21/40 |
· | Hand grips [7]

P:150 |  | F21V 23/00 |
Arrangement of electric circuit elements in or on lighting devices (electric circuits per se Fulltext... Hierarchy... Expanded...H05B 39/00)

|  | F21V 23/02 |
· | the elements being transformers or impedances

|  | F21V 23/04 |
· | the elements being switches (safety devices Fulltext... Hierarchy... Expanded...F21V 25/00)

P:0 |  | F21V 25/00 |
Safety devices structurally associated with lighting devices (gas-tight or water-tight arrangements Fulltext... Hierarchy... Expanded...F21V 31/00; in general Fulltext... Hierarchy... Expanded...F16P; protective circuit arrangements per se Fulltext... Hierarchy... Expanded...H02H 7/00)

P:160 |  | F21V 27/00 |
Cable-stowing arrangements structurally associated with lighting devices, e.g. reels (storing lengths of cable in general Fulltext... Hierarchy... Expanded...B65H)

P:20 |  | F21V 29/00 |
Cooling or heating arrangements (cooling of air-treatment systems with air-flow over lighting fixtures Fulltext... Hierarchy... Expanded...F24F 3/044; lighting fixtures combined with outlets for air-treatment systems Fulltext... Hierarchy... Expanded...F24F 13/06; cooling of projectors Fulltext... Hierarchy... Expanded...G03B 21/16; cooling arrangements structurally associated with electric lamps Fulltext... Hierarchy... Expanded...H01J 61/02, Fulltext... Hierarchy... Expanded...H01K 1/00) [1,7]

P:30 |  | F21V 31/00 |
Gas-tight or water-tight arrangements

P:10 |  | F21V 33/00 |
Structural combinations of lighting devices with other articles, not otherwise provided for [1,7]

P:200 |  | F21V 35/00 |
Candle holders

P:190 |  | F21V 36/00 |
Arrangements of mantles or other incandescent bodies on burners (attaching to lamp parts Fulltext... Hierarchy... Expanded...F21V 19/00)

P:210 |  | F21V 37/00 |
Details of lighting devices employing combustion as light source, not otherwise provided for [1,7]

P:220 |  | F21V 99/00 |
Subject matter not provided for in other groups of this subclass [8]