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:
Jul. 15, 2025
Filed:
Nov. 06, 2019
Mitsubishi Electric Corporation, Tokyo, JP;
Tomohiro Asamura, Tokyo, JP;
Eiichi Saito, Tokyo, JP;
MITSUBISHI ELECTRIC CORPORATION, Tokyo, JP;
Abstract
There is provided a vibration suppression device of a rope-like body that can use a negative restoring force that amplifies a displacement of a rope-like body of an elevator to prevent the displacement from becoming unstable. A vibration suppression device () includes a first displacement measurement unit, a first displacement amplifier, and a control unit (). The first displacement measurement unit measures a displacement in a lateral direction of the rope-like body due to vibration about an equilibrium position () at a first position (P) in a longitudinal direction of the rope-like body. The first displacement amplifier applies, to the rope-like body, a negative restoring force that amplifies the displacement of the rope-like body. The control unit () causes the first displacement amplifier to apply a negative restoring force smaller than a positive restoring force, based on the displacement measured by the first displacement measurement unit.