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:
Mar. 21, 2006
Filed:
Aug. 24, 2005
Yoshiaki Fujita, Fuchu, JP;
Yoshiaki Fujita, Fuchu, JP;
Toshiba Elevator Kabushiki Kaisha, Shinagawa-ku, JP;
Abstract
A device, which is provided at a car, for guiding the car along guide rails, the device comprises, a non-contact type of actuator configured to generate a magnetic force which keeps the actuator away from surfaces of a rail by predetermined distances, a unit configured to detect a distance between the rail and the car, a unit configured to determine an amount of displacement of the rail which is caused by a load which generates at time of guiding, based on a value of the magnetic force and the distance, a unit configured to acquire position information regarding the car, a unit configured to calculate an amount of a warp occurring at time of setting the rail, which corresponds to the information, and a unit configured to control the magnetic force based on a total value of the determined amount of the displacement and the amount of the warp.