Structure or manufacture of flux-sensitive heads, ( ; general details therefor G11B5/133 - G11B5/255)

Introduced: January 1985

Title

Titles differ between systems:

IPC: Structure or manufacture of flux-sensitive heads

CPC: Structure or manufacture of flux-sensitive heads, ( ; general details therefor G11B5/133 - G11B5/255)

Full Title

Full titles differ between systems:

IPC:

Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor > Structure or manufacture of heads, e.g. inductive > Structure or manufacture of flux-sensitive heads

CPC:

Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor (G11B11/00 take precedence) > Structure or manufacture of heads, e.g. inductive > Structure or manufacture of flux-sensitive heads, ( ; general details therefor G11B5/133 - G11B5/255)

Of 5 combined children, 4 exist in both systems.

1 codes are CPC-only extensions.

2 shared codes have differing titles between IPC and CPC.

IPC defines codes here since 1985.

Child Classifications

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G11B 5/332 CPC only CPC only
G11B 5/335 with saturated jig, e.g. for detecting second harmonic; balanced flux head since 1985 IPC+CPC Available in IPC and CPC
G11B 5/35 having vibrating elements since 1985 IPC+CPC Available in IPC and CPC
G11B 5/37 using galvano-magnetic devices, e.g. Hall-effect devices (G11B5/39 takes precedence) since 1985 +2 CPC IPC+CPC Available in IPC and CPC
G11B 5/39 using magneto-resistive devices since 1985 +2 CPC IPC+CPC Available in IPC and CPC