Dual timer device

Details Dual timer device Dual timer device

1979-08-21

1980-11-25

Jackmon, Edith S.

Horology: time measuring systems or devices

Time interval

Gravity actuated type

368316, G04F 104, G04B 3700

Patent

active

042362423

ABSTRACT:
The Dual Timer invented makes use of two fluid-type timers arranged perpendicularly to each other in a simply designed hinged mechanism to measure and control playing time in concentration games such as Scrabble, chess and checkers. The mechanism has no moving mechanical parts and is manually operated.

REFERENCES:
patent: 3522701 (1970-08-01), Perry

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