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:
Jan. 26, 1988
Filed:
Apr. 01, 1987
Applicant:
Inventors:
Hiroshi Araki, Inazawa, JP;
Tooru Tanahashi, Inazawa, JP;
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B66B / ;
U.S. Cl.
CPC ...
187119 ; 363 37 ;
Abstract
A control apparatus for an A.C. elevator comprises resistances connected between an A.C. power source and a converter, a detection device to detect the build-up rate of the charged voltage of a smoothing capacitor, and control means to generate a signal for closing a contact interposed between the A.C. power source and the converter, when the output of the detection device is not greater than a predetermined value. The detection and control devices are preferably provided by a microcomputer.