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:
Jul. 09, 1996
Filed:
Aug. 15, 1994
Eiji Narumi, Tokyo, JP;
Masao Iwasa, Ichikawa, JP;
Otis Elevator Company, Farmington, CT (US);
Abstract
In a traction-type elevator equipped with a driving sheave (16) positioned at the top of the shaft for ascent and descent (1), cage sheaves (4, 5) are attached to the upper section of the cage (2) and are inclined in relation to this driving sheave (16), and multiple ropes (12, 13, 14) are wound around the outer surface (4a) of this cage sheave and the outer surface (16a) of the above-mentioned driving sheave; the traction-type elevator is characterized in that along with making the outer surface (4a) of the above-mentioned cage sheave (4) parallel to the outer surface (16a) of the driving sheave (16), this cage sheave (4) is divided into multiple sheave pieces (17, 18, 19) according to the abovementioned ropes (12, 13, 14). The ropes (12, 13, 14) are pulled by the driving sheave (16), and even if the cage (2) is caused to move upwardly or downwardly at a high speed, there is essentially no more generation of vibration and noise, because none of the abovementioned ropes (12, 13, 14) twists undesirably.