公开(公告)号：US20250066160A1

公开(公告)日：2025-02-27

申请号：US18235977

申请日：2023-08-21

Applicant: OTIS ELEVATOR COMPANY

Inventor： Alexander Serkh ,  Bardia Guilani

IPC: B66B7/12 ,  B66B5/00

Abstract: A method and apparatus includes an indicator mark that is located on at least one tension member at a predetermined distance from a fixed point. A visual indication of tension member replacement is provided when the indicator mark approaches a specified distance from the fixed point after a tension member length adjustment.

公开(公告)号：US11999590B2

公开(公告)日：2024-06-04

申请号：US17567524

申请日：2022-01-03

Applicant: OTIS ELEVATOR COMPANY

Inventor： Jun Ma ,  Alexander Serkh

IPC: B66B15/00 ,  B29C70/68 ,  B66B15/04 ,  B29L31/00

CPC classification number: B66B15/04 ,  B29C70/68 ,  B29L2031/748

Abstract: An illustrative example embodiment of an elevator sheave assembly includes a plurality of polymer rings that are secured together. The plurality of polymer rings includes at least two polymer rings that each have an outer circumferential surface that defines a portion of a belt guiding surface adjacent a flange at a longitudinal end of the sheave assembly. The at least two polymer rings each include a bearing supported inside the ring.