Escalator steps having lateral safety devices

摘要

A safety device for the side edges of every escalator step tread plate and riser is formed of an elastic synthetic material of a very low coefficient of friction. All ribs on the body of the safety device are supported tiltably such that under loading the outermost safety rib touches the handrail base and closes the air gap between the step and the base. The tilting is controlled by a wedge-shaped recess formed in the body. The recess is closed toward the air gap by either an inwardly arched terminating wall or by a flange.