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:
Feb. 22, 1994
Filed:
Feb. 12, 1992
Toshio Kadokura, Tokyo, JP;
Ryoichi Kurosawa, Tokyo, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
A self running type elevator system using linear motors in which a control of power supply to a plurality of elevator cars can be achieved without increasing the size of the system enormously. The system includes at least one travelling corridors, each of which is equipped with a primary coil of a linear motor; a plurality of elevator cars placed inside the travelling corridors, each of which is equipped with a secondary conductor of the linear motor; and a plurality of control device means, provided in correspondence to the elevator cars, for controlling a supply of a driving power to the primary coil at a position of the elevator car such that the elevator car is driven by a driving force produced between the primary coil and the secondary conductor of the linear motor by the driving power.