Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Kenji Utsunomiya0
Date of Patent
November 9, 2010
0Patent Application Number
119177790
Date Filed
September 9, 2005
0Patent Primary Examiner
Patent abstract
In a vibration damping device for an elevator, an actuator for generating a vibration damping force acting on an elevator car is provided in parallel with a spring for urging a guide roller against a guide rail. The actuator is controlled by a controller. The controller determines the vibration damping force to be generated by the actuator based on information from a car frame acceleration sensor for detecting horizontal acceleration of a car frame and a car cage acceleration sensor for detecting horizontal acceleration of a car cage.
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