Details of transducers,

Introduced: September 1968

Title

Titles differ between systems:

IPC: Details of transducers

CPC: Details of transducers,

Full titles differ between systems:

IPC:

Details of transducers

CPC:

Details of transducers,

Of 12 combined children, 11 exist in both systems.

1 codes are CPC-only extensions.

3 shared codes have differing titles between IPC and CPC.

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H04R 1/005 CPC only CPC only
H04R 1/02 Casings; Cabinets Mountings therein (H04R1/28 takes precedence ) +5 CPC IPC+CPC Available in IPC and CPC
H04R 1/06 Arranging circuit leads; Relieving strain on circuit leads IPC+CPC Available in IPC and CPC
H04R 1/08 Mouthpieces; Attachments therefor +1 CPC IPC+CPC Available in IPC and CPC
H04R 1/10 Earpieces; Attachments therefor +8 CPC IPC+CPC Available in IPC and CPC
H04R 1/12 Sanitary or hygienic devices for mouthpieces or earpieces, e.g. for protecting against infection IPC+CPC Available in IPC and CPC
H04R 1/14 Throat mountings for microphones IPC+CPC Available in IPC and CPC
H04R 1/16 Mounting or connecting stylus to transducer with or without damping means IPC+CPC Available in IPC and CPC
H04R 1/20 Arrangements for obtaining desired frequency or directional characteristics (for stereophonic purpose H04R5/00) IPC+CPC Available in IPC and CPC
H04R 1/42 Combinations of transducers with fluid-pressure or other non-electrical amplifying means IPC+CPC Available in IPC and CPC
H04R 1/44 Special adaptations for subaqueous use, e.g. for hydrophone IPC+CPC Available in IPC and CPC
H04R 1/46 Special adaptations for use as contact microphones, e.g. on musical instrument, on stethoscope (throat mountings H04R1/14) IPC+CPC Available in IPC and CPC