Museum display case fitted with a sliding door operated by a rack and pinion mechanism

The problem

Ensuring that a sliding door runs smoothly across over 60% of its overall length using a single gearmotor.

The standard solution

Shortening the door’s travel if bi-directional, creating a motor-assisted system sliding on one side only, or fitting two motors to the case.

Goppion’s innovation

Goppion has developed a transmission system by means of which the movement is transmitted from the centrally placed gearmotor to satellite pinions working in tandem. The door is initially shifted by both sets of gears; one is later disengaged, while the pinion on the side the door is sliding toward continues to draw it along until the door is fully open.