Electronic hour glass clock

Details Electronic hour glass clock Electronic hour glass clock

1976-01-02

1977-06-21

Jackmon, E. S.

58 1R, 58 23R, 58127R, G04C 300, G04B 1906

Patent

active

040302857

ABSTRACT:
An electronic clock has a display which simulates the operation of one or more hour glasses. The hour glass display is simulated by the use of visual display elements, such as lights, which are made to appear to pass from the top portion of the hour glass display into the bottom portion of the hour glass display with the passage of time. Means are provided for resetting the hour glass display to put all of the display elements in their original condition and also for cascading multiple hour glass displays to give a visual indication of hours and minutes of time.

REFERENCES:
patent: 2745243 (1956-05-01), Schumacher
patent: 3744235 (1973-07-01), Kratomi

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