公开(公告)号：US20250019203A1

公开(公告)日：2025-01-16

申请号：US18351054

申请日：2023-07-12

Applicant: Otis Elevator Company

Inventor： Brad Guilani ,  David R. Torlai

IPC: B66B1/34 ,  B66B3/02 ,  B66B5/00

Abstract: A position reference system of an elevator system includes a reference element having a fixed position in a hoistway of the elevator system, and an optical sensor configured to move along the hoistway with an elevator car of the elevator system and configured to transmit a signal to the reference element to determine the position of the elevator car. An airflow duct is configured to move along the hoistway with the elevator car. The airflow duct is configured to passively direct an airflow toward the reference element to prevent accumulation of particles on the reference element.

公开(公告)号：US11261062B2

公开(公告)日：2022-03-01

申请号：US16403216

申请日：2019-05-03

Applicant: Otis Elevator Company

Inventor： David R. Torlai ,  Jun Ma

IPC: B66B15/02 ,  F16H55/36 ,  F16H57/00 ,  B66B15/06

Abstract: Disclosed is a modular sheave unit including: a bearing that includes an outer race, an inner race and one or more rolling elements therebetween; and a sleeve that includes one or both of: an outer sleeve axially surrounding the outer race, the outer sleeve including an outer surface defining a groove, the groove configured to receive a belt; and an inner sleeve axially surrounded by the inner race and disposed between the inner race and a mandrel.

公开(公告)号：US11111108B2

公开(公告)日：2021-09-07

申请号：US15971211

申请日：2018-05-04

Applicant: OTIS ELEVATOR COMPANY

Inventor： Xiaoyuan Chang ,  David R. Torlai

IPC: B66B15/04 ,  C09D191/06 ,  C25D3/04

Abstract: An elevator sheave includes a sheave body and a coating on a surface of the sheave body. The coating includes microcracks and a filler in the microcracks. A method of making a sheave for an elevator system is also disclosed.

公开(公告)号：US20200055707A1

公开(公告)日：2020-02-20

申请号：US16104568

申请日：2018-08-17

Applicant: Otis Elevator Company

Inventor： James L. Hubbard ,  David R. Torlai ,  Peter Keyo

IPC: B66B15/04

Abstract: Disclosed is a liner for a traction sheave including a top surface and a bottom surface mutually spaced on a height-wise axis (H), a front surface and a back surface mutually spaced on lengthwise axis (L), and a plurality of side surfaces including a first side surface and a second side surface mutually spaced in a widthwise axis (W), wherein in a first cross sectional profile of the plurality of side surfaces forms convergent-divergent profile.

公开(公告)号：US11254544B2

公开(公告)日：2022-02-22

申请号：US16993502

申请日：2020-08-14

Applicant: Otis Elevator Company

Inventor： James L. Hubbard ,  David R. Torlai ,  Peter Keyo

IPC: B66B15/04

Abstract: Disclosed is a liner for a traction sheave including a top surface and a bottom surface mutually spaced on a height-wise axis (H), a front surface and a back surface mutually spaced on lengthwise axis (L), and a plurality of side surfaces including a first side surface and a second side surface mutually spaced in a widthwise axis (W), wherein in a first cross sectional profile of the plurality of side surfaces forms convergent-divergent profile.

公开(公告)号：US20210362981A1

公开(公告)日：2021-11-25

申请号：US17395881

申请日：2021-08-06

Applicant: OTIS ELEVATOR COMPANY

Inventor： Xiaoyuan CHANG ,  David R. Torlai

IPC: B66B15/04 ,  C09D191/06 ,  C25D3/04

Abstract: An elevator sheave includes a sheave body and a coating on a surface of the sheave body. The coating includes microcracks and a filler in the microcracks. A method of making a sheave for an elevator system is also disclosed.

公开(公告)号：US10647547B2

公开(公告)日：2020-05-12

申请号：US15645285

申请日：2017-07-10

Applicant: Otis Elevator Company

Inventor： Xiaoyuan Chang ,  David R. Torlai ,  Peter Keyo ,  Lance L. Lavender ,  Hong Yang

IPC: B66B15/02 ,  F16H55/38 ,  B32B37/12 ,  B32B37/14 ,  B32B37/18 ,  B32B38/10 ,  B66B11/00 ,  B29C53/56 ,  B66B15/04

Abstract: An elevator maintenance kit is provided for surfacing an elevator sheave that engages with an elevator tension member. The kit includes a substrate with an adhesive backing, and a substrate applicator that is operable to apply the substrate to the sheave as the sheave is rotated. The adhesive backing is operable to attach the substrate to the sheave during the sheave rotation.

公开(公告)号：US20240101392A1

公开(公告)日：2024-03-28

申请号：US17935664

申请日：2022-09-27

Applicant: Otis Elevator Company

Inventor： Girija Marathe ,  David R. Torlai

IPC: B66B5/22 ,  B23K1/00

CPC classification number: B66B5/22 ,  B23K1/0008 ,  B23K2101/34

Abstract: A braking mechanism includes a wedge selectably engageable with a guide rail, and a frictional surface defined on the wedge configured for selective engagement with the guide rail in an overspeed condition. The frictional surface includes a friction coating of polycrystalline blocky diamond material. An elevator system includes an elevator car, a guide rail along which the elevator car travels, and a braking mechanism located at the elevator car and selectably engageable with the guide rail to slow or stop travel of the elevator car along the guide rail. The braking mechanism includes a wedge having a frictional surface configured for selective engagement with the guide rail in an overspeed condition. The frictional surface includes a friction coating of polycrystalline blocky diamond material.

公开(公告)号：US20200369491A1

公开(公告)日：2020-11-26

申请号：US16993502

申请日：2020-08-14

Applicant: Otis Elevator Company

Inventor： James L. Hubbard ,  David R. Torlai ,  Peter Keyo

IPC: B66B15/04

Abstract: Disclosed is a liner for a traction sheave including a top surface and a bottom surface mutually spaced on a height-wise axis (H), a front surface and a back surface mutually spaced on lengthwise axis (L), and a plurality of side surfaces including a first side surface and a second side surface mutually spaced in a widthwise axis (W), wherein in a first cross sectional profile of the plurality of side surfaces forms convergent-divergent profile.

公开(公告)号：US10822202B2

公开(公告)日：2020-11-03

申请号：US16034646

申请日：2018-07-13

Applicant: OTIS Elevator Company

Inventor： Austin Lee ,  David R. Torlai ,  Jun Ma

IPC: B66B15/04

Abstract: A unitized segmented sheave assembly is provided. The unitized segmented sleeve assembly includes sheaves arrayed in a side-to-side formation and respectively comprising bearings and an exterior running surface and spacers interleaved between neighboring sheaves. Respective inner races of the bearings of each sheave and respective interior portions of each spacer cooperatively form an interior annular surface. The unitized segmented sheave assembly further includes a sleeve disposable in abutment with the interior annular surface.