Magnetic visual display

Education and demonstration – Means for demonstrating apparatus – product – or surface... – Chalkboard or equivalent means having easily erasable surface

Patent

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Details

434309, B43L 100

Patent

active

052958370

ABSTRACT:
An apparatus for providing a magnetic visual display in which a magnetic field is exposed to a dispersion medium sealed between two surfaces and having distributed therein randomly-oriented magnetically-active flakes, thereby causing alignment of a portion of the flakes and allowing transmission of light through the dispersion medium in the region of the aligned flakes to form an image by the contrast between the areas of aligned and randomly-oriented flakes. The contrast may be enhanced by a light source on the opposite side of the device from the viewer. The image may be colored by coloring either of the surfaces, the dispersion medium, the flakes or the light from the light source.

REFERENCES:
patent: Re25363 (1963-04-01), Tate
patent: Re25822 (1963-07-01), Tate
patent: Re33363 (1990-10-01), Miller
patent: T921007 (1974-04-01), Foley
patent: 2589601 (1952-03-01), Burnett
patent: 3011854 (1961-12-01), Allen
patent: 3036388 (1962-05-01), Tate
patent: 3103751 (1963-09-01), McDonald
patent: 3322482 (1967-05-01), Harmon
patent: 3509644 (1970-05-01), Santell
patent: 3585735 (1971-06-01), Miller
patent: 3648269 (1972-03-01), Rosenweig et al.
patent: 3683382 (1972-08-01), Ballinger
patent: 3938263 (1976-02-01), Tate
patent: 3982334 (1976-09-01), Tate
patent: 4143472 (1979-03-01), Murata et al.
patent: 4232084 (1980-11-01), Tate
patent: 4288936 (1981-09-01), Okutsu
patent: 4451985 (1984-06-01), Pullman
patent: 4457723 (1984-07-01), Tate
patent: 4536428 (1985-08-01), Murata et al.
patent: 4643684 (1987-02-01), Murata et al.
patent: 4804327 (1989-02-01), Miller
patent: 5018979 (1991-05-01), Gilano et al.
patent: 5112229 (1992-05-01), Gilano et al.

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