| 摘要 |
<p>A movable art display unit (10) is provided having a housing (12) that encloses a display chamber. The display chamber communicates with the exterior of the housing through an access opening (38). Mounted on the housing to selectively cover the access opening (38) is a screen security system (58). The security system (58) includes a shaft positioned on opposite sides of the access opening. A flexible screen (14) is wrapped around one of the shafts (60, 60') and has a cable (100) extending from the screen to the opposing shaft. As the shafts (60, 60') are rotated, the cable and screen are pulled across the access opening so that the screen selectively covers the access opening. Rotation of the shafts is facilitated by a worm gear drive (108).</p> |
