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:
Oct. 19, 1982
Filed:
Jun. 10, 1981
Masashi Yonemoto, Inazawa, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A method for controlling the movement of an elevator cage in which a difference between first and second speed instruction values is made constant irrespective of speed so that no shock force is applied to the cage at a time of switching between speed instruction values. A predetermined distance is added to a remaining distance of the age to a target floor. A modified second speed instruction value corresponding to the resultant distance is compared with the first speed instruction value, and when this difference becomes smaller than a predetermined value, a switching preparation instruction is issued. The elevator is operated at a speed determined by the first speed instruction value until a predetermined period of time after the switching preparation instruction after which the elevator is operated in accordance with the second speed instruction value.