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IPC 7
  F21V - F21V 17/20  
F21V01900-F21V03702
 

SECTION F – MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING


F 21LIGHTING (electric aspects or elements, see section H, e.g. electric light sources H01J, H01K, H05B)


F 21 VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR [1,7]


19/

00Fastening of light sources or lamp holders (fastening electric light source solely by the coupling device H01R 33/00)

19/

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

19/

04.with provision for changing light source, e.g. turret

19/

06.Fastening incandescent mantles or other incandescent bodies to lamp parts; Suspension devices for incandescent mantles or other incandescent bodies [1,7]

 


21/

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

 

21/

002.making direct electrical contact, e.g. by piercing (F21V 21/35 takes precedence) [7]

 

21/

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

 

21/

008.Suspending from a cable or suspension line [7]

 

21/

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

21/

03..Ceiling bases, e.g. ceiling roses (F21V 21/04 takes precedence) [7]

 

21/

04..Recessed bases

21/

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

21/

08.Devices for easy attachment to a desired place

21/

084..Head fittings (for medical purposes A61B 1/06) [7]

 

21/

088..Clips; Clamps [7]

 

21/

092..Suction devices [7]

 

21/

096..Magnetic devices [7]

 

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)

21/

104..Pendants [7]

 

21/

108..Arms [7]

 

21/

112..Fixing lighting devices to pendants (F21V 21/002 takes precedence) [7]

 

21/

116..Fixing lighting devices to arms or standards (F21V 21/002 takes precedence) [7]

 

21/

12..capable of being elongated or shortened by the insertion or removal of intermediate pieces

21/

13.Spring-loaded poles fixed at both ends [7]

 

21/

14.Adjustable mountings

 

21/

15..specially adapted for power operation, e.g. by remote control [7]

 

21/

16..using wires or cords

21/

18...operated by springs

21/

20...operated by weights

21/

22..telescopic

21/

24..Lazy-tongs

21/

26..Pivoted arms

21/

28...adjustable in more than one plane

21/

29....employing universal joints

21/

30..Pivoted housings or frames

21/

32..Flexible tubes

21/

34.Supporting elements displaceable along a guiding element

21/

35..with direct electrical contact between the supporting element and electric conductors running along the guiding element [7]

 

21/

36.Hoisting or lowering devices, e.g. for maintenance (F21V 21/14 takes precedence)

21/

38..with a cable

21/

40.Hand grips [7]

 


23/

00Arrangement of electric circuit elements in or on lighting devices (electric circuits per se H05B 39/00)

23/

02.the elements being transformers or impedances

23/

04.the elements being switches (safety devices F21V 25/00)

23/

06.the elements being coupling devices


25/

00Safety 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).

25/

02.coming into action when lighting device is disturbed, dismounted, or broken

25/

04..breaking the electric circuit

25/

06..feeding a quenching fluid to the light source

25/

08..cutting the incandescent filament

25/

10.coming into action when lighting device is over-loaded, e.g. thermal switch

25/

12.Flameproof or explosion-proof arrangements


27/

00Cable-stowing arrangements structurally associated with lighting devices, e.g. reels (storing lengths of cable in general B65H)

 

27/

02.Cable inlets [7]

 


29/

00Cooling or heating arrangements (air-treatment systems with air-flow over lighting fixtures F24F 3/056; lighting fixtures combined with outlets for air-treatment systems F24F 13/078) [1,7]

 

29/

02.Cooling by forcing air over or around the light source (cooling arrangements structurally associated with electric lamps H01J 61/52, H01K 1/58) [7]

 


31/

00Gas-tight or water-tight arrangements

 

31/

02(covered by F21V 31/00)

31/

03.with provision for venting [7]

 

31/

04.Provision of filling media (safety devices F21V 25/00; cooling arrangements F21V 29/00)


33/

00Structural combinations of lighting devices with other articles, not otherwise provided for [1,7]

Note

 Attention is drawn to Note (3) following the title of class F21. [7]


35/

00Candle holders


36/

00Arrangements of mantles or other incandescent bodies on burners (attaching to lamp parts F21V 19/06)

36/

02.in ceiling lamps


37/

00Details of lighting devices employing combustion as light source, not otherwise provided for [1,7]

 

37/

02.Special adaptation for protection against draughts [7]

 


  F21V - F21V 17/20   
 

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