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:
Apr. 05, 2011
Filed:
Nov. 25, 2005
Rikio Kondo, Tokyo, JP;
Takaharu Ueda, Tokyo, JP;
Hiroshi Kigawa, Tokyo, JP;
Ken-ichi Okamoto, Tokyo, JP;
Takashi Yumura, Tokyo, JP;
Rikio Kondo, Tokyo, JP;
Takaharu Ueda, Tokyo, JP;
Hiroshi Kigawa, Tokyo, JP;
Ken-Ichi Okamoto, Tokyo, JP;
Takashi Yumura, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
An emergency stop system for an elevator includes a state sensor for detecting an operation of a car, a brake device for braking the car, a brake controller for outputting a signal for operating the brake device based on a signal detected by the state sensor, and an uninterruptible power supply device for supplying electric power to the sensor, the brake device, and the controller. The controller has a signal processing/calculating unit for calculating the deceleration of the car based on the signal detected by the sensor, a command value calculating unit for calculating a command value for operating the brake device based on the deceleration of the car calculated by the processing/calculating unit, and a power monitoring device for monitoring state of the uninterruptible power supply device. At least one of the sensor, the processing/calculating unit, and the calculating unit includes independent systems.