|  | F |
SECTION F — MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING

LIGHTING AND HEATING

|  | F21 |
LIGHTING (details specific to arc lamps Fulltext... Hierarchy... Expanded...H05B 31/00)

|  | F21 |
Note(s) Attention is drawn to the note (Note III) following the Contents of Section of Section H. In this class, the following terms are used with the meanings indicated: "Portable" means "intended to be carried personally". "Non-portable" means "not intended to be carried personally, even if capable of being moved from place to place". "Electric" includes "not stated to be non-electric".

|  | F21V |
DETAILS OF LIGHTING DEVICES, OF GENERAL APPLICATION

|  | F21V |
Note(s) In this sub-class have been included only those lighting device details which were considered to be of a kind applicable to the lighting devices of more than one of the sub-classes Fulltext... Hierarchy... Expanded...F21L, Fulltext... Hierarchy... Expanded...F21M, Fulltext... Hierarchy... Expanded...F21P, Fulltext... Hierarchy... Expanded...F21Q, Fulltext... Hierarchy... Expanded...F21S. Inventions concerned with details of the kinds provided for are to be classified in this sub-class, even though they are only stated to be applied to a device of a single sub-class.

|  | F21V 1/00 - F21V 13/00 |
Details of those parts involved in light emission or distribution (optical elements and systems in general Fulltext... Hierarchy... Expanded...G02B)

|  | F21V 1/00 |
Shades

|  | F21V 1/02 |
· | Frames

|  | F21V 1/04 |
· · | rigid (Fulltext... Hierarchy... Expanded...F21V 1/08 takes precedence)

|  | F21V 1/06 |
· · | foldable or collapsible

|  | F21V 1/08 |
· · | adjustable

|  | F21V 1/10 |
· | Rotating shades

|  | F21V 1/12 |
· | Composite shades

|  | F21V 1/14 |
· | Covers for frames; Frameless shades

|  | F21V 1/16 |
· · | characterised by the material

|  | F21V 1/18 |
· · · | the material being paper

|  | F21V 1/20 |
· · · | the material being glass

|  | F21V 1/22 |
· · · | the material being plastics

|  | F21V 1/24 |
· · · | the material being metal

|  | F21V 1/26 |
· | Manufacturing shades

|  | 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)

|  | F21V 3/02 |
· | characterised by the shape

|  | F21V 3/04 |
· | characterised by the material; characterised by surface treatments or coatings

|  | F21V 5/00 |
Refractors

|  | F21V 5/02 |
· | of prismatic shape (Fulltext... Hierarchy... Expanded...F21V 5/04 takes precedence)

|  | F21V 5/04 |
· | of lens shape

|  | F21V 5/06 |
· | Hanging lustres for chandeliers

|  | F21V 5/08 |
· | producing an asymmetric light distribution (applicable solely to vehicle head-lighting devices Fulltext... Hierarchy... Expanded...F21M 3/06, Fulltext... Hierarchy... Expanded...F21M 11/00)

|  | F21V 7/00 |
Reflectors

|  | F21V 7/02 |
· | adapted to co-operate with point-like light sources; adapted to co-operate with light sources the shape of which is unspecified (Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...F21V 7/16-F21V 7/22 take precedence)

|  | F21V 7/04 |
· · | Optical design

|  | F21V 7/05 |
· · · | plane

|  | F21V 7/06 |
· · · | with parabolic curvature

|  | F21V 7/07 |
· · · | with hyperbolic curvature

|  | F21V 7/08 |
· · · | with elliptical curvature

|  | F21V 7/09 |
· · · | with a combination of different curvatures

|  | F21V 7/10 |
· · | Construction

|  | F21V 7/12 |
· | adapted to co-operate with linear light sources, e.g. trough-shaped (Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...F21V 7/16-F21V 7/22 take precedence)

|  | F21V 7/14 |
· | adapted to co-operate with light sources of shapes not covered by group Fulltext... Hierarchy... Expanded...F21V 7/02 or Fulltext... Hierarchy... Expanded...F21V 7/12, e.g. circular (Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...F21V 7/16-F21V 7/22 take precedence)

|  | F21V 7/16 |
· | with provision for adjusting the curvature

|  | F21V 7/18 |
· | with provision for folding or collapsing

|  | F21V 7/20 |
· | constructed to facilitate cooling, e.g. with fins (cooling by other means, e.g. fluid, Fulltext... Hierarchy... Expanded...F21V 29/00)

|  | F21V 7/22 |
· | characterised by the material; characterised by surface treatments or coatings

|  | 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 Fulltext... Hierarchy... Expanded...H05B 33/00)

|  | F21V 9/02 |
· | for simulating daylight (Fulltext... Hierarchy... Expanded...F21V 9/04, Fulltext... Hierarchy... Expanded...F21V 9/06, Fulltext... Hierarchy... Expanded...F21V 9/16 take precedence)

|  | F21V 9/04 |
· | for filtering out infra-red radiation (using liquid-filled chambers Fulltext... Hierarchy... Expanded...F21V 9/12)

|  | F21V 9/06 |
· | for filtering out ultra-violet radiation (Fulltext... Hierarchy... Expanded...F21V 9/16 takes precedence)

|  | F21V 9/08 |
· | for producing coloured light, e.g. monochromatic; for reducing intensity of light (Fulltext... Hierarchy... Expanded...F21V 9/16 takes precedence)

|  | F21V 9/10 |
· · | with provision for variation of the colour or intensity (Fulltext... Hierarchy... Expanded...F21V 9/12 takes precedence)

|  | F21V 9/12 |
· · | with liquid-filled chambers

|  | F21V 9/14 |
· | for producing polarised light

|  | F21V 9/16 |
· | Selection of luminescent materials for light screens

|  | 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, Fulltext... Hierarchy... Expanded...F21V 9/00

|  | F21V 11/02 |
· | using parallel laminae or strips, e.g. of Venetian-blind type (Fulltext... Hierarchy... Expanded...F21V 11/06 takes precedence)

|  | F21V 11/04 |
· · | adjustable

|  | F21V 11/06 |
· | using crossed laminae or strips; using lattices or honeycombs

|  | F21V 11/08 |
· | using diaphragms containing one or more apertures

|  | F21V 11/10 |
· · | of iris type

|  | F21V 11/12 |
· · | of slot type

|  | F21V 11/14 |
· · | with many small apertures

|  | F21V 11/16 |
· | using sheets without apertures, e.g. fixed (Fulltext... Hierarchy... Expanded...F21V 11/02, Fulltext... Hierarchy... Expanded...F21V 11/06 take precedence)

|  | F21V 11/18 |
· · | movable, e.g. flaps, slides

|  | F21V 13/00 |
Combinations of elements specified in two or more of the groups Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...F21V 1/00-F21V 11/00 (combinations of two or more elements covered by a single one of groups Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...F21V 1/00-F21V 11/00, see the relevant group)

|  | F21V 13/02 |
· | Combinations of only two kinds of elements

|  | F21V 13/04 |
· · | the elements being reflectors and refractors

|  | F21V 13/06 |
· · · | a reflector being rotatable

|  | F21V 13/08 |
· · | the elements being reflectors and filters

|  | F21V 13/10 |
· · | the elements being reflectors and screens

|  | F21V 13/12 |
· | Combinations of only three kinds of elements

|  | F21V 13/14 |
· · | the elements being reflectors, refractors, and filters

|  | F21V 15/00 - F21V 37/00 |
Details of those parts not involved in light emission or distribution, g. fittings

|  | F21V 15/00 |
Protecting lighting devices from damage

|  | F21V 15/02 |
· | Cages

|  | F21V 15/04 |
· | Resilient mountings, e.g. shock-absorbers (in general Fulltext... Hierarchy... Expanded...F16F 15/04)

|  | F21V 17/00 |
Fastening of shades, globes, refractors, reflectors, filters, screens, and protective cages (sealing arrangements Fulltext... Hierarchy... Expanded...F21V 31/02)

|  | F21V 17/02 |
· | with provision for adjustment (Fulltext... Hierarchy... Expanded...F21V 17/04, Fulltext... Hierarchy... Expanded...F21V 17/06 take precedence)

|  | F21V 17/04 |
· | the fastening being onto or by the light source

|  | F21V 17/06 |
· | the fastening being onto or by the lamp holder

|  | 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

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

|  | F21V 19/06 |
· | Attaching mantles or other incandescent bodies to lamp parts

|  | 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; stands for supporting apparatus or articles in general Fulltext... Hierarchy... Expanded...F16M 11/00)

|  | F21V 21/02 |
· | Wall, ceiling, or floor bases, e.g. ceiling rose; 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 21/04 |
· · | Recessed bases

|  | 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 any desired place, e.g. clip, clamp, magnet

|  | 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 21/12 |
· · | capable of being elongated or shortened by the insertion or removal of intermediate pieces

|  | F21V 21/14 |
· | Adjustable mountings

|  | F21V 21/16 |
· · | using wires or cords

|  | F21V 21/18 |
· · · | operated by springs

|  | F21V 21/20 |
· · · | operated by weights

|  | F21V 21/22 |
· · | telescopic

|  | F21V 21/24 |
· · | Lazy-tongs

|  | F21V 21/26 |
· · | Pivoted arms

|  | F21V 21/28 |
· · · | adjustable in more than one plane

|  | F21V 21/29 |
· · · · | employing universal joints

|  | F21V 21/30 |
· · | Pivoted housings or frames

|  | F21V 21/32 |
· · | Flexible tubes

|  | F21V 21/34 |
· | Supporting elements displaceable along a guiding element, e.g. rail, wire

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

|  | F21V 21/38 |
· · | with a cable

|  | F21V 23/00 |
Arrangements 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)

|  | F21V 23/06 |
· | the elements being coupling devices, e.g. for shavers

|  | 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)

|  | F21V 25/02 |
· | coming into action when lighting device is over-loaded, e.g. thermal switch

|  | F21V 25/04 |
· · | breaking the electric circuit

|  | F21V 25/06 |
· · | feeding a quenching fluid to the light source

|  | F21V 25/08 |
· · | cutting the incandescent filament

|  | F21V 25/10 |
· | coming into action when lighting device is over-loaded, e.g. thermal switch

|  | F21V 25/12 |
· | Flameproof or explosion-proof arrangements

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

|  | F21V 29/00 |
Cooling arrangements

|  | F21V 31/00 |
Gas-tight or water-tight arrangements

|  | F21V 31/02 |
· | Sealing arrangements

|  | F21V 31/04 |
· | Provision of filling media (safety devices Fulltext... Hierarchy... Expanded...F21V 25/00; cooling arrangements Fulltext... Hierarchy... Expanded...F21V 29/00)

|  | F21V 33/00 |
Structural combinations of lighting devices with other articles (illuminated articles or apparatus, see the relevant sub-class for the article or apparatus)

|  | F21V 35/00 |
Candle holders

|  | F21V 36/00 |
Arrangements of mantles or other incandescent bodies on burners (attaching to lamp parts Fulltext... Hierarchy... Expanded...F21V 19/06)

|  | F21V 36/02 |
· | in ceiling lamps

|  | F21V 37/00 |
Details of liquid-fuel lighting devices, not otherwise provided for