Changeable alphanumeric sign with opaque tape display forming se

Details Changeable alphanumeric sign with opaque tape display forming se Changeable alphanumeric sign with opaque tape display forming se

1975-12-03

1978-01-03

Curtis, Marshall M.

Communications: electrical

Systems

Portable self-contained

40467, 40471, 340324R, 340379, 340334, 40519, G09F 1118

Patent

active

040670066

ABSTRACT:
A changeable alphanumeric sign with printed characters is disclosed. The sign is universally changeable in the sense that any combination of alphanumeric characters may be displayed by selectively positioning a set of display tapes in each character window. Each set of tapes forms a broken-character display in the respective character window and all character windows are independently controlled to form a broken-word display. This arrangement minimizes the length of display tapes required. An open-loop positioning system is provided whereby all sets of tapes are concurrently but independently positioned to change the characters of the sign.

REFERENCES:
patent: 1016944 (1912-02-01), Kent
patent: 1553302 (1925-09-01), Allatt
patent: 1872145 (1932-08-01), Hurford
patent: 2754500 (1956-07-01), Lazich
patent: 2764827 (1956-10-01), Custin
patent: 3582937 (1971-06-01), Dozer

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