Improvements in or relating to stairlifts

摘要

A stairlift comprises a carriage 112 mounted on a rail and driven by engagement of a longitudinal section of a driven belt 152 biased into contact with the rail. The belt passes around drive wheels 150a, 150b. The belt is biased against the rail by a plurality of rollers 170 or by a block under the upper run of the belt. The belt may have teeth extending from it to engage in slots in the rail. A link may be provided to use passenger weight to add to the bias of the belt against the rail. A chain may be used instead of a belt.