Escalator with non-jaming step

Details Escalator with non-jaming step Escalator with non-jaming step

1975-07-17

1977-01-25

Blunk, Evon C.

Conveyors: power-driven

Conveyor or accessory therefor specialized to convey people

By stairway having steps forming an endless member

B66B 912

Patent

active

040046761

ABSTRACT:
Transportation apparatus for transporting persons between spaced landings, including a plurality of steps, and skirt members disposed at opposite sides of the steps. The steps each include tread and riser parts which cooperatively define projections on the riser side of the step adjacent to the skirt members. The projections on the step form an obtuse angle between the skirt members and the immediately adjacent portions of the riser part.

REFERENCES:
patent: 2981391 (1961-04-01), Hansen
patent: 3515253 (1970-06-01), Yamada

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