Display and reset apparatus

Details Display and reset apparatus Display and reset apparatus

1977-03-07

1978-09-26

Pitrelli, John F.

Card, picture, or sign exhibiting

Changing exhibitor

Alphanumeric device

40466, 340324R, 340378R, G09F 930

Patent

active

041159411

ABSTRACT:
A display sign of the type comprising a back-lighted panel having a plurality of discrete light-transmitting areas and an equal number of controlled opaque disks which move between alternate stable positions. One position of each disk overlies the light-transmitting area associated therewith. The other position of each disk is offset to one corresponding side of its associated light-transmitting area. The disks are operated by electromagnets or other noncontacting means mounted to a carriage rearward of the panel. Selected disks are shifted from one position to the other during relative movement between the carriage and panel. The improvement comprises a magnetic drum which precedes the electromagnets to momentarily reset all of the disks in their first position overlying the individual light-transmitting area associated therewith in a progressive pattern just forward of the disks being set by the electromagnets.

REFERENCES:
patent: 3199098 (1965-08-01), Schwartz
patent: 3562938 (1971-02-01), Salam
patent: 3624647 (1971-11-01), Smith

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