The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 21, 1987
Filed:
Apr. 18, 1985
Shigeru Goto, Ichinomiya, JP;
Masaru Asano, Kohnan, JP;
Matsuhiko Ishida, Inazawa, JP;
Shosaku Inoue, Misato, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
An escalator comprising four kinds of steps is disclosed. The first steps are ordinary steps, and the second step is disposed between the first steps and has a retractable support device for supporting a vertically movable step of the third step. The movable step supported by the support device lifts from the third step as the steps ascend to provide a deeper effective tread together with the tread of the second step. The fourth step includes a drop-down step which can be moved into a sloped position which also provides a space for safely accommodating a wheelchair or the like on the deep effective tread thus provided by the second, third, and fourth steps.