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PCE
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DIFF Subgroup
G11B 19/26

Speed-changing arrangements; Reversing arrangements; Drive-transfer means therefor

Introduced: September 1968

Full Title

Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function > Driving; Starting; Stopping; Control thereof > Speed-changing arrangements; Reversing arrangements; Drive-transfer means therefor

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

IPC defines codes here since 1985.

Child Classifications

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  • G11B 19/265 Friction wheel drive since 1985 IPC+CPC Available in IPC and CPC
  • G11B 19/27 Belt drive since 1985 IPC+CPC Available in IPC and CPC
  • G11B 19/275 Gear wheel drive since 1985 IPC+CPC Available in IPC and CPC