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:
Aug. 10, 1993
Filed:
Aug. 05, 1991
Kajima Corporation, Tokyo, JP;
Abstract
A linear motor driven elevator including in an elevator shaft, a fixed portion, an upper turning portion, and a lower turning portion. An ascending passage and a descending passage are sectionally formed between both turning portions in the fixed portion in a manner that the passages are positioned oppositely. A plurality of cages are accommodated in the passages, the cages being provided with permanent magnets which oppose the linear motor primary coils. Locking mechanisms for selectively locking the cages in position are provided. The turning portions each include a motor driven turn table which rotates the cage about the center axis of the elevator shaft to switch from the ascending to the descending passages and vice versa.