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PCE
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DIFF Subgroup
G04C 23/38

Mechanisms measuring a chosen time interval independently of the time of day at which interval starts

Introduced: September 1968

Title

Titles differ between systems:

IPC: Mechanisms measuring a chosen time interval independently of the time of day at which the interval starts

CPC: Mechanisms measuring a chosen time interval independently of the time of day at which interval starts

Full Title

Full titles differ between systems:

IPC:

Clocks with attached or built-in means operating any device at preselected times or after preselected time-intervals > Mechanisms measuring a chosen time interval independently of the time of day at which the interval starts

CPC:

Clocks with attached or built-in means operating any device at preselected times or after preselected time-intervals (if restricted to producing acoustic time signals by electrical means G04C21/00) > Mechanisms measuring a chosen time interval independently of the time of day at which interval starts

IPC and CPC are identically structured here. All 4 subcodes exist in both systems.

Child Classifications

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  • G04C 23/40 using continuously-running mechanism IPC+CPC Available in IPC and CPC
  • G04C 23/48 acting at the ends of successive time intervals IPC+CPC Available in IPC and CPC
  • G04C 23/50 with provision for modification of the interval(s) by external influences IPC+CPC Available in IPC and CPC