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. 15, 1996
Filed:
Nov. 16, 1994
Atsushi Iwakiri, Yokohama, JP;
Masao Iwasa, Ichikawa, JP;
Otis Elevator Company, Farmington, CT (US);
Abstract
A traction-type elevator includes a driving sheave (19) arranged in an upper portion of an elevator shaft, cage sheaves (6, 7) arranged at an angle with respect to the driving sheave (19) and mounted on a support beam (5), multiple (or turns of a rope) ropes (17) hung on the cage sheaves (6, 7) and the driving sheave (19), and a hanging rod (10) for hanging a cage from the support beam (5). In this traction-type elevator according to the invention, one torsion coil spring (16) is arranged between the cage side and the aforementioned support beam (5) appropriately so that the aforementioned hanging rod (10) is inserted through it; the two ends of torsion coil spring (16) are attached to a cage side and a side of the support beam (5), respectively. The support beam (5) can effectively rotate to relax torsion in the ropes (17), and it is possible to suppress generation of vibration by the torsion. Also, the torsion coil spring (16) can play the role in damping vibration without shifting outwardly.