Display device

Details Display device Display device

1978-04-24

1981-04-07

Mancene, Gene

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Alphanumeric device

G09F 900

Patent

active

042598010

ABSTRACT:
A display device which can rotate a flap of a display unit in opposite directions in accordance with a predetermined program without necessitating any expensive electronic circuit and switch mechanism. The device comprises a substrate, a flap rotatably supported on the surface of the substrate, a permanent magnet secured to the flap, and a driving magnet located in the rear of the substrate and movable rotative to the substrate. The driving magnet includes an S pole magnetized region and an N pole magnetized region arranged so as to hold the flap at either one of two positions disposed on the substrate.

REFERENCES:
patent: 1765215 (1930-01-01), Duchard
patent: 3140553 (1944-07-01), Taylor
patent: 3426453 (1969-02-01), Dingwall
patent: 3454913 (1969-07-01), Israelson
patent: 3460276 (1969-08-01), Payne
patent: 3643311 (1972-02-01), Knetchee
patent: 3721189 (1973-03-01), Bray
patent: 3916403 (1975-10-01), Mandzsu et al.
patent: 4115936 (1978-09-01), Nideikoff

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