Patent ID: 6098779
Filing Date: 2000-08-08
Classification: B66B

Abstract:
A sloping transportation apparatus for carrying a large-sized object, in which a plurality of steps are connected to travel forward and backward so that tread faces of the individual steps are kept horizontal at least in a load carrying section, said apparatus comprising:a plurality of ordinary steps;at least one enlarged step having a tread face with a run greater than that of said ordinary steps and permitting a large-sized object to be placed thereon; andat least one reduced step having tread face with a run smaller than that of said ordinary steps and connected adjacent to said enlarged step before and behind said enlarged step, the tread face of said reduced step being shifted in position from the tread faces of said ordinary steps in a sloping traveling section;wherein positions of all of the steps are determined such that the tread faces thereof are properly located adjacent to each other on an identical plane in a horizontal traveling section, and curvature of a guide surface connecting a horizontal traveling guide surface and a pitch surface of a step driving mechanism is determined such that said enlarged step does not interfere with a wall surface under floor in a turning section.