Communications: electrical – Land vehicle alarms or indicators – Internal alarm or indicator responsive to a condition of the...
Patent
1986-10-30
1988-09-06
Curtis, Marshall M.
Communications: electrical
Land vehicle alarms or indicators
Internal alarm or indicator responsive to a condition of the...
40449, 40426, 34081508, 3408151, G09G 316
Patent
active
047696389
ABSTRACT:
Large scale information display panels made up of basic picture elements running to hundreds, even up several thousand color elements, are useful for being viewed for advertising, transportation information, traffic control, news, weather, finanical data and other information normally generated by computers. The system has capability in alphanumeric and also for color graphics designs in four colors with use of a basic display element with two intersecting planes rotational about an axis at the intersection of the two planes. A three plane element provides for designs in six colors. The basic two plane display has each face of each of the two plane surfaces coated or impregnated with a different color and a single permanent bar magnet is enclosed in one of the plane forms perpendicular to the axis of rotation. The bar magnet acts as an armature for rotation of the element with current flow through a coil and a holding force with magnetic circuit material resist shifting from a set orientation in a two coil driven configuration. This is with "L" shaped ferrous metal strips providing support for the rotatable display elements and holding a vertical coil and horizontal coil in place for each rotatable display element. Addition of a third coil positioned in element to element dividers for each element and inclusion of a third perpendicular color plane along with two permanent bar magnets at right angles to each other in each element extends the concept to a six color display.
REFERENCES:
patent: 3036300 (1962-05-01), Knight
patent: 3140553 (1964-07-01), Taylor
patent: 3295238 (1967-01-01), Winrow
patent: 3365824 (1968-01-01), Winrow
patent: 3469258 (1969-09-01), Winrow
patent: 3540038 (1970-11-01), Taylor et al.
patent: 3636557 (1972-01-01), Watkins
patent: 4380879 (1983-04-01), Seibert
Bowler Roland
Curtis Marshall M.
Kintzinger Warren H.
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