Changeable message sign with single message display opening

Details Changeable message sign with single message display opening Changeable message sign with single message display opening

1976-10-01

1978-02-14

Pitrelli, John F.

Card, picture, or sign exhibiting

Changing exhibitor

Motor operated

40505, G09F 1102

Patent

active

040730816

ABSTRACT:
Movable message sign apparatus having a single message display opening, and a number of back-lighted message display members mounted within the opening. Each message display member includes a translucent message member having a pair of message faces which form an open V configuration. The message members are attached to end members that are pivotally mounted, so that there is no need for an axle extending through a message display member. The message display members are oscillated in unison between message display positions which place either a first set or a second set of message faces in message display alignment with the opening. A source of back lighting is provided at a sufficient distance behind the message members to avoid streaking or other localized intense illumination. Each message member has flanges which enhance the rigidity of the member and which prevent direct viewing of the illumination source.

REFERENCES:
patent: 676235 (1901-06-01), Jackson
patent: 1652335 (1927-12-01), Wiley
patent: 3983648 (1976-10-01), Hunter
patent: 4002022 (1977-01-01), Lopez

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