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:
Aug. 31, 2010
Filed:
Mar. 01, 2006
Seiji Watanabe, Chiyoda-ku, JP;
Daiki Fukui, Chiyoda-ku, JP;
Takashi Yumura, Chiyoda-ku, JP;
Hideki Nishiyama, Chiyoda-ku, JP;
Hideki Shiozaki, Chiyoda-ku, JP;
Seiji Watanabe, Chiyoda-ku, JP;
Daiki Fukui, Chiyoda-ku, JP;
Takashi Yumura, Chiyoda-ku, JP;
Hideki Nishiyama, Chiyoda-ku, JP;
Hideki Shiozaki, Chiyoda-ku, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Mitsubishi Electric Building Techno-Service Co., Ltd., Tokyo, JP;
Abstract
In a control operation performed at time of an earthquake or strong wind, when a running elevator is stopped at a nearest floor, the natural frequency of the transverse vibration of a rope is prevented from resonating with the natural frequency of the building, and thereby an increase in transverse vibration of the rope is restrained. In the control operation, when a shake of the building caused by earthquake or strong wind is detected, a running elevator is stopped at the nearest floor, or an elevator passing through an express zone is stopped emergently and runs at a low speed to the nearest floor, the natural frequency of the transverse vibration of the rope is compared with the natural frequency of the building, and the car stop position is selected at a non-resonance position to prevent the natural frequency of the transverse vibration of the rope from resonating with the natural frequency of the building.