F
SECTION F — MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  
LIGHTING AND HEATING
 F21
LIGHTING (details specific to arc lamps H05B 31/00)
 F21

Note(s)

  1. Attention is drawn to the note (Note III) following the Contents of Section of Section H.
  2. In this class, the following terms are used with the meanings indicated:
    1. "Portable" means "intended to be carried personally".
    2. "Non-portable" means "not intended to be carried personally, even if capable of being moved from place to place".
    3. "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 F21L, F21M, F21P, F21Q, 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 G02B)
 F21V 1/00
Shades
 F21V 1/02
·  Frames
 F21V 1/04
·  ·  rigid (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 F21V 5/00; with reflecting properties 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 (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 F21M 3/06, 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 (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 (F21V 7/16-F21V 7/22 take precedence)
 F21V 7/14
·  adapted to co-operate with light sources of shapes not covered by group F21V 7/02 or F21V 7/12, e.g. circular (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, F21V 29/00)
 F21V 7/22
·  characterised by the material; characterised by surface treatments or coatings
 F21V 9/00
Light filters (coloured shades F21V 1/00); Selection of luminescent materials for light screens (luminescent materials per se C09K 11/00; electroluminescent light sources H05B 33/00)
 F21V 9/02
·  for simulating daylight (F21V 9/04, F21V 9/06, F21V 9/16 take precedence)
 F21V 9/04
·  for filtering out infra-red radiation (using liquid-filled chambers F21V 9/12)
 F21V 9/06
·  for filtering out ultra-violet radiation (F21V 9/16 takes precedence)
 F21V 9/08
·  for producing coloured light, e.g. monochromatic; for reducing intensity of light (F21V 9/16 takes precedence)
 F21V 9/10
·  ·  with provision for variation of the colour or intensity (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 F21V 1/00, F21V 3/00, F21V 7/00, F21V 9/00
 F21V 11/02
·  using parallel laminae or strips, e.g. of Venetian-blind type (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 (F21V 11/02, 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 F21V 1/00-F21V 11/00 (combinations of two or more elements covered by a single one of groups 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 F16F 15/04)
 F21V 17/00
Fastening of shades, globes, refractors, reflectors, filters, screens, and protective cages (sealing arrangements F21V 31/02)
 F21V 17/02
·  with provision for adjustment (F21V 17/04, 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 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 (F21V 17/00, F21V 19/00 take precedence; stands for supporting apparatus or articles in general F16M 11/00)
 F21V 21/02
·  Wall, ceiling, or floor bases, e.g. ceiling rose; Fixing pendants or arms to the bases (F21V 21/08 takes precedence; bases for movable standing lamps F21V 21/06)
 F21V 21/04
·  ·  Recessed bases
 F21V 21/06
·  Bases for movable standing lamps; Fixing standards to the bases (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 F21V 21/14; construction of posts not peculiar to use with lighting devices 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 (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 H05B 39/00)
 F21V 23/02
·  the elements being transformers or impedances
 F21V 23/04
·  the elements being switches (safety devices 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 F21V 31/00; in general F16P; protective circuit arrangements per se 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 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 F21V 25/00; cooling arrangements 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 F21V 19/06)
 F21V 36/02
·  in ceiling lamps
 F21V 37/00
Details of liquid-fuel lighting devices, not otherwise provided for