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

LIGHTING AND HEATING

|  | F21 |
LIGHTING (electric aspects or elements 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 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 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, e.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 disturbed, dismounted, or broken

|  | 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