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:
Jun. 11, 1996
Filed:
Oct. 17, 1994
Hitachi, Ltd., Tokyo, JP;
Abstract
A passenger conveyer control apparatus includes various kinds of safety devices including a skirt guard switch, a terminal inlet switch, a chain safety switch and first and second microcomputers. The first microcomputer executes sequence processing corresponding to the operation of an escalator by the detection of an actuation of any of the safety devices, such as the start and stop of the escalator on the turn-on and off of the switches. The result of the processing is used for driving the escalator through driving means via an output memory. The second microcomputer executes processing by detecting the actuation of any safety device by the input signals from the safety device, whereupon a running permissive signal is outputted from an output terminal and executes processing for judging the operating situations of the safety devices of the escalator, and whereupon the judged results are communicated via a telephone interface and a public circuit to a centralized monitoring office which is in charge of maintenance.