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DIFF Subgroup
F21V 29/56

using liquid coolants (F21V29/51 takes precedence)

Introduced: January 2015

Title

Titles differ between systems:

IPC: using liquid coolants

CPC: using liquid coolants (F21V29/51 takes precedence)

Full Title

Full titles differ between systems:

IPC:

Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems > Cooling arrangements > using liquid coolants

CPC:

Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems (lighting fixtures combined with outlets for air-treatment systems F24F13/078) > Cooling arrangements (air-treatment systems dissipating or using the heat of lighting fixtures F24F3/056) > using liquid coolants (F21V29/51 takes precedence)

Of 3 combined children, 2 exist in both systems.

1 codes are CPC-only extensions.

IPC defines codes here since 2015.

Child Classifications

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  • F21V 29/57 characterised by control arrangements since 2015 IPC+CPC Available in IPC and CPC
  • F21V 29/58 characterised by the coolants since 2015 IPC+CPC Available in IPC and CPC
  • F21V 29/59 CPC only CPC only