Presentation system for revolving doors, carrying advertising messages, holds a number of door panels riding on grooves in a linear guide to be extended and retracted to change the promotions

摘要

The presentation system for revolving doors holds a number of door panels (20), carrying promotional material, to be moved in and out of action to change the displays. The panels ride on rollers in grooves at a linear guide, which supports the lower ends (21) of the panels.