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

Full Title

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

Child Classifications

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• G04C 23/40 using continuously-running mechanism
• G04C 23/42 acting only at the end of a single time interval
• G04C 23/48 acting at the ends of successive time intervals
• G04C 23/50 with provision for modification of the interval(s) by external influences