Interval timer

Details Interval timer Interval timer

1992-02-10

1993-10-12

Miska, Vit W.

Horology: time measuring systems or devices

Chronological

With electro-optical display

368107, 368239, G04C 1900, G04F 800

Patent

active

052532283

ABSTRACT:
An electronic interval timer in which a cylindrical shell having five rows of LEDs mounted at spaced intervals from top to bottom, formed every 72.degree. about the circumference simulates an hourglass timer. Timer and control circuits are connected to select a desired time interval and to illuminate the LEDs and turn off successive rings in proportion to the time remaining in the selected interval at any given time after actuation. An audible buzzer is also provided as are interrupt and reset capabilities.

REFERENCES:
patent: 3775964 (1973-12-01), Fukumoto
patent: 3852949 (1974-12-01), Satler
patent: 4070819 (1978-01-01), Kelly
patent: 4161098 (1979-07-01), Ingendahl

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