Magnetic display apparatus

Details Magnetic display apparatus Magnetic display apparatus

1996-01-05

1998-10-13

Smith, Jeffrey A.

Education and demonstration

Means for demonstrating apparatus, product, or surface...

Chalkboard or equivalent means having easily erasable surface

434408, B43L 100

Patent

active

058203850

ABSTRACT:
A magnetic display apparatus having a magnetic display sheet consisting of a plurality of microcapsules having oily liquid having photoabsorptive ferromagnetic powder and photoreflective non-magnetic powder, an apparatus for erasing with a magnet a line drawn on the display sheet by the magnetic pen, a magnet, a mechanism for moving the magnet along a major portion of the magnetic display sheet and a power source for moving the mechanism which supports the magnet.

REFERENCES:
patent: 4288936 (1981-09-01), Okutsu
patent: 4675476 (1987-06-01), Kobayashi
patent: 5186631 (1993-02-01), Okutsu

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