Changeable dot display assembly

Details Changeable dot display assembly Changeable dot display assembly

1987-06-01

1989-01-10

Mancene, Gene

Card, picture, or sign exhibiting

Changing exhibitor

Alphanumeric device

40447, 34081504, 34081505, 34081524, 34081527, G09F 900

Patent

active

047963689

ABSTRACT:
This dot assembly has a three-position rotor carrying dot display means for use as a portion of a matrix of dots in a variable message sign. The assembly has a stator including a support carrying reversely magnetizable separate magnetic cores on which are separate electrically energizable coils. The rotor which is carried by the support has a shaft rotated axially perpendicular to the cores. A permanent magnet on the rotor is adjacent to the cores to interact magnetically with them and rotate the shaft selectively to any one of three rotor positions. A single display disk having a peripheral display edge and two opposite display sides, or a unit of three disks having three exposed display sides, is mounted on the shaft for selective display of said edge or any one of the display sides in a viewing position.

REFERENCES:
patent: 3624941 (1971-12-01), Chantry
patent: 4380879 (1983-04-01), Seibert
patent: 4531318 (1985-07-01), Chang et al.
patent: 4577427 (1986-03-01), Browne
patent: 4615131 (1986-10-01), Wakatake
patent: 4627182 (1986-12-01), Weiss
patent: 4706398 (1987-11-01), Browne et al.

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