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PCE
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DIFF Subgroup
F21V 25/02

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

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Safety devices structurally associated with lighting devices > coming into action when lighting device is disturbed, dismounted, or broken

CPC:

Safety devices structurally associated with lighting devices (gas- tight or water-tight arrangements F21V31/00; in general F16P; protective circuit arrangements per se H02H7/00) > coming into action when lighting device is disturbed, dismounted, or broken

IPC and CPC are identically structured here. All 3 subcodes exist in both systems.

Child Classifications

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  • F21V 25/04 breaking the electric circuit IPC+CPC Available in IPC and CPC
  • F21V 25/06 feeding a quenching fluid to the light source IPC+CPC Available in IPC and CPC
  • F21V 25/08 cutting the incandescent filament IPC+CPC Available in IPC and CPC