Aperture closures

Year	Description
1999	Invention patented by Bruce Stanley Gunton on August 17th, 1999. Abstract: A sliding door mechanism controls a door 10 in the form of a series of horizontal slats articulated to the slats above and below to move from a closed position in a vertical plane, along between tracks 14, until open. The door is moved by cables winding on or off a cable drum 12 driven through a drive belt 16 by an electric motor 18. The motor is on a carriage mounted at 30 to allow the drive belt to be slackened to remove drive from the drum 12. Control circuits 20 for the apparatus are described.
Source: selected by the editor from original sources.

Invention: Aperture closures