Signal display element for the display of more, than two informa

Details Signal display element for the display of more, than two informa Signal display element for the display of more, than two informa

1986-11-19

1988-08-16

Caldwell, Sr., John W.

Communications: electrical

Visual indication

Movable

34081526, 116204, 40449, G01D 520, G08B 524

Patent

active

047647680

ABSTRACT:
A signal display element for the display of more than two informations by electromagnetically excited tilting plates supported in bearings on a baseplate (1) and containing magnetic parts and adapted to be rotated about an axis of rotation (3), wherein the magnetic axes of the parts of the tilting plates containing the magnets (5) run normal to the plane of the tilting plate, bipolarly excitable field coils are coupled to the tilting plate (4) for controlling the rotation thereof. Parts of the tilting plates (4) containing the magnets (5) are thicker than the non-magnetic parts and the distance between the outer surfaces of the two extreme tilting plates, when the tilting plates (4) are laid on each other on one side of the axis of rotation (3), is equal to the total thickness of the tilting plates, representing the sum of the total thickness of the non-magnetic parts of the tilting plates (4), the number of which is less by one, than the number of all the tilting plates, and the thickness of a magnet (5) of maximal thickness.

REFERENCES:
patent: 2952835 (1960-09-01), Aiken
patent: 3540038 (1970-11-01), Taylor et al.
patent: 3916403 (1975-10-01), Mandzsu et al.
patent: 4528932 (1985-07-01), Ducza et al.

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