Escalator
AssigneeMitsubishi Denki Kabushiki Kaisha
InventorsMasaru Asano, Teruo Kamioka
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Abstract
The disclosed safety devices are disposed at either of the edges of each stair of an escalator. Each device includes a sensor dovetailed to a bracket for the individual stair treads and risers to abut against and be horizontally aligned with a displacement element screwed to the bracket. The sensor of each device projects beyond a corresponding riser. If a passenger's calf or the like contacts the sensor, the latter retrogrades to displace the abutting end portion of the displacement element toward the adjacent skirt plate of the escalator to narrow a space formed between the displacement element and the skirt plate. The sensor may be disposed in a vertically aligned, abutting relationship upon the displacement element to somewhat project beyond the cleats on a tread.
Claims10
An escalator system comprising, a travelling stairway having a plurality of main stair bodies disposed and travelling along adjacent a skirt plate defining a gap between the lateral edge of each of the main stair bodies and said skirt plate, each body of said main stair comprising one tread board including a plurality of cleats and one riser, for each body a safety device including a sensor element disposed on a lateral edge of each of said main stair body movable by contact with an object, and a displacement element located in a path of movement of said sensor element to respond to the movement of said sensor element and displaced in response to said movement in a direction to narrow said gap.
Dependencies are inferred from the claim text.