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:
Nov. 20, 2001
Filed:
Jun. 16, 2000
Applicant:
Inventor:
Shiro Inoue, Osaka, JP;
Assignee:
Tsubakimoto Chain Co., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B66B 1/34 ;
U.S. Cl.
CPC ...
B66B 1/34 ;
Abstract
For each control period, a position of each elevator of a plurality of elevating devices is calculated, the farthest elevator from a designated movement destination position is determined as a reference elevator based on the position of each elevator thus calculated, position deviations of other elevators are calculated with respect to a position of the reference elevator, actuators of the elevators other than the reference elevator which have the position deviations outside a predetermined range are off controlled, and actuators of the elevator having the position deviation within the predetermined range and the reference elevator are on controlled.