Traffic signal with time duration indicator and mechanical synch

Details Traffic signal with time duration indicator and mechanical synch Traffic signal with time duration indicator and mechanical synch

1979-04-23

1981-03-10

Groody, James J.

Communications: electrical

Selective

Having indication or alarm

116 63R, 340 44, 340373, G08G 1096, G08G 1095

Patent

active

042557372

ABSTRACT:
A traffic signal having a four sided housing, each side of which contains red and green areas which can be illuminated. Furthermore, each side contains a rotating semi-circular mask which simultaneously, progressively covers one portion of one of the colored areas and uncovers a portion of the other colored area until the illumination of the traffic light is changed thereby causing a change in traffic flow. The rotation of the masks together with the actuation of the various lights is controlled from a common ring gear disposed within the housing and driven by a single motor.

REFERENCES:
patent: 1522617 (1925-01-01), Degner et al.
patent: 1942306 (1934-01-01), Price
patent: 2157636 (1939-05-01), Shaw
patent: 2235728 (1941-03-01), Ramspeck
patent: 2349355 (1944-05-01), Kepler
patent: 3200218 (1965-08-01), Wagner

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