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:
Oct. 08, 2002
Filed:
Jan. 30, 2001
Ikuro Suga, Tokyo, JP;
Hiroshi Araki, Tokyo, JP;
Shinobu Tajima, Tokyo, JP;
Kazuyuki Kobayashi, Tokyo, JP;
Other;
Abstract
An elevator control apparatus includes a power storage unit for storing the DC power; a charge/discharge control circuit that controls a state of charge of the power storage unit, outputs a drive signal to charge the power storage unit with the DC power during a halt of the elevator based on operational information regarding the elevator received from the controller, and outputs a stop signal to stop charging when a voltage of the power storage unit reaches a preset voltage; and a charge/discharge circuit for starting charging the power storage unit with the DC power in response to the drive signal, and stopping the charging in response to the stop signal. This arrangement ensures landing of the elevator in case of a power failure, eliminates a peak in power consumption, and permits energy saving by effectively using power produced in a regenerative mode of the elevator.