Information displayer with interchangeable boards

Details Information displayer with interchangeable boards Information displayer with interchangeable boards

1997-01-09

1998-09-15

Dorner, Kenneth J.

Card, picture, or sign exhibiting

Changing exhibitor

Motor operated

40463, 40501, 40510, 40516, 40517, G09F 7700

Patent

active

058062203

ABSTRACT:
An information displayer with interchangeable boards for use in displaying advertising messages. Two sets of boards are disposed on two chains respectively, with each chain rotating about a pair of pinions. One pinion is stationary while the other is connected to a stepping motor. Hooks on a rigid bar grasp openings in the boards to release and display the boards. A pre-programmed microprocessor controls the stepping motor, permitting the boards to be displayed in any selected manner.

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patent: 5031346 (1991-07-01), Herring et al.
patent: 5440214 (1995-08-01), Peeters

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