Display device comprising rotating display elements having a plu

Details Display device comprising rotating display elements having a plu Display device comprising rotating display elements having a plu

1989-10-10

1991-10-15

Oberley, Alvin E.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

34081527, 34081526, 40449, 116204, G09G 316

Patent

active

050578286

ABSTRACT:
Display device comprising an array of rotating display elements (4) which have at least two faces of different color and are arranged in rows and columns, means (8, 18) for actuating the said rotating elements in terms of rotation, intended to ensure the modification of the face of each rotating element appearing on the display, and means for controlling the actuating means (8, 18) so as to ensure the rotation of the said rotating elements in order to form an image to be displayed, characterized in that the rotating elements (4) of each row or column are arranged on a common shaft rotatably mounted in a frame of the device, each rotating element being connected to the shaft by a friction coupling, a device (8, 15) for driving in step-by-step rotation associated with each shaft and a retractable member (16) for blocking all the rotating elements (4) of each column or row in terms of rotation, one actuating device (18) being associated with each blocking member (16).

REFERENCES:
patent: 3109168 (1963-10-01), Abendroth
patent: 3706148 (1972-12-01), Johnston
patent: 4264906 (1981-04-01), Wakatake
patent: 4417241 (1983-11-01), Wakatake
patent: 4597209 (1986-07-01), Hukill
patent: 4761905 (1988-08-01), Black
patent: 4811008 (1989-03-01), Woolfolk

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