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Posted On:
October 5, 2015

Garaventa Evacu-Trac’s Brake Can Stop it on the Stairway

Make Your Stairs Easy, With An Acorn Stairlift! ›

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Drive System Basics

Counterweight

A system of cables and stacked weights that provide a counterweight to the cab and passenger load weight. It's purpose is to make lifting the load more efficient and less taxing on the lifting motor.

Hydraulic

A system that uses a cylinder, a pump and non-compressible liquid (hydraulic oil). The fluid builds up inside the cylinder, pushing up a piston located inside and causing the elevator to raise to the corresponding floor. Releasing the compressed liquid through a valve allows the cab to lower.

Pneumatic

A system whereby the lifting power is applied without cables and pulleys, but rather through a vacuum pump. By applying the principles of a vacuum to generate changes in atmospheric pressure within the cylinder hoist way, the cab moves smoothly and safely between floors.

Winding Drum

A lifting system that utilizes aircraft cable, a winding drum and a motor mounted at the top of or behind the rails depending on your height limitations. The motor winds the cable onto the drum to lift and descend the elevator cab. The variable speed motor provides you with a soft start and stop.

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