Otis Elevator Company

Contitech Antriebssysteme Gmbh

Xiaodong Luo

Richard N Fargo

Enrico Manes

Zaffir A Chaudhry

Richard J Ericson

Bruce P Swaybill

Shihemn Chen

Luke A Mishler

John P Wesson

Tahany Ibrahim El-Wardany

Tadeusz Pawel Witczak

Zbigniew Piech

Daniel A Mosher

Walter Thomas Schmidt

Fanping Sun

Mark Steven Thompson

Yan Chen

Huan Zhang

Mark E Marler

Robert A Barth

Loi Cheng

Wayde R Schmidt

Paul Sheedy

James Thompson Beals

Aaron T Nardi

Daryl J Marvin

Andrzej Ernest Kuczek

David Ginsberg

Randall Keith Roberts

Michael J Tracey

Michael A Klecka

Hugh James O'Donnell

Joseph Zacchio

Randy Roberts

Shashank Krishnamurthy

Pei-Yuan Peng

Richard L Hollowell

John T Pitts

Ary O Mello

Bryan Robert Siewert

Muhidin A Lelic

Raja Kountanya

James M Draper

Dang V Nguyen

Benjamin J Watson

David R Polak

Hubert Goeser

Adam Marian Myszkowski

Marcin Wroblewski

Meghan Mastriano

Mark Olthuis

Christoph Bederna

Aayush Desai

Goldino Alves

Joe J Liou

Bill Perron

John J Kriss

Paul Von Hardenberg

Thomas Malone

Duan Liang

Patricia L O'Coin

Mark E Renzulli

An adjacent safety configuration for an elevator includes a second pair of safeties displaced from a first pair of safeties by at least 0.1 seconds of travel time at a rated speed of the elevator. An adjacent safety configuration for an elevator including a second pair of safeties displaced from the first pair of safeties to provide a predetermined time period before the second pair of safeties pass over a point on a guide rail previously passed over by the first pair of safeties to permit the guide rail surface to decrease by a predetermined temperature. A method of spacing an adjacent safety configuration for an elevator system including de-rating a pair of trailing safeties with respect to a pair of leading safeties as a function of a rated speed of the elevator and a spacing between the pair of trailing safeties and the pair of leading safeties.

Safety brake configuration for elevator application

An illustrative example spring includes a curved shape body having a length. The body includes a cavity that extends along at least a majority of the length. The body has a cross-section across the length that is different at a plurality of locations on the body along the length.

Spring useful for elevator safety device

An illustrative example elevator system includes a frame, a first elevator cab, a second elevator cab, and a plurality of sheaves associated with the first and second elevator cabs, respectively. A suspension assembly suspends the first and second elevator cabs within the frame. The suspension assembly has two ends in a fixed position relative to the frame. The suspension assembly includes a positive drive load bearing member along a first portion of a length of the suspension assembly and at least one other second load bearing member. A machine includes a drive sprocket that moves the positive drive load bearing member to cause movement of the first and second elevator cabs relative to the frame.

Elevator cab suspension assembly for a double deck elevator

An assemblyfor actuating and controlling braking of a car of an elevator system is provided. The assembly includes at least one braking devicemounted on the car, supported between the car and a hoistway for movement with the car within the hoistway, and configured to apply a braking force to the car. The assembly also includes at least one corresponding actuatorsupported by the hoistway and configured to selectively engage the braking device to prevent movement of the car.

Assembly for actuating an elevator car brake

A guidance mechanism for an elevator car is constructed and arranged to move along a lane defined at least in-part between two opposing first and second lane structures of a stationary structure. The guidance mechanism includes a first support structure supported by the first lane structure. The first support structure includes a first retainer face disposed between the elevator car and the first lane structure that substantially faces the first lane structure, and is spaced from the first lane structure. A first retention device of the mechanism is disposed, at least in part, between the first retainer face and the first lane structure. The first retention device is supported by the elevator car and is constructed and arranged to contact the first retainer face for limiting lateral movement of the elevator car away from the first lane structure and toward the second lane structure.

Elevator car guidance mechanism

An elevator control system is configured to control an elevator car constructed and arranged to move along a hoistway defined by a stationary structure. The elevator system may include a communication pathway and a hoistway control system supported by the stationary structure and configured to send a continuous brake command signal over the pathway. A car control system is carried by the elevator car and is configured to receive the continuous brake command signal and initiate a brake Ustop mode upon a loss of the brake command signal, and independent of the hoistway control system.

Elevator braking control system

An illustrative example elevator assembly includes a first elevator cab and a second elevator cab. An H frame supports the first elevator cab and the second elevator cab. The H frame has a plurality of vertically oriented beams and at least one horizontally oriented beam extending between the vertically oriented beams. The at least one horizontally oriented beam is spaced from ends of the vertically oriented beams and the H frame does not have any horizontally oriented beam at either end of the vertically oriented beams. At least one linear actuator is coupled with the first elevator cab and the second elevator cab. The linear actuator is configured to selectively cause movement of the elevator cabs relative to the H frame.

H frame for a double deck elevator

A method and system for managing an elevator system, includes providing a recovery car to travel in the hoistway via a motor, and engaging the car via an attachment device of the recovery car.

Elevator recovery car

A method of fault detection of a belt or rope includes interconnecting a plurality of cords of the belt or rope, the cords including a plurality of wires, to form a bridge circuit. A fault detection bridge circuit is subjected to a voltage excitation and outputs a voltage which is indicative of the belt or rope damage but remaining insensitive to other environmental noises.

Elevator cord health monitoring

A brake assembly and a method for manufacturing a brake assembly are provided. The brake assembly includes a brake pad affixed to a substrate. The brake pad extends from the substrate to a brake pad friction surface, and includes abradable cellular metal foam with the hardened ceramic particles.

Friction brake assembly with an abradable metal foam brake pad

A method of fault detection of a belt or rope includes connecting a fault detection unit to at least a portion of a belt or rope including a plurality of wires arranged in a plurality of strands and/or cords. At least the portion of the belt or rope is subjected to an AC voltage of high frequency range and an electrical impedance of the portion of the belt or rope is measured via the fault detection unit. Using at least the measured electrical impedance of the portion of the belt or rope, a fault condition of the belt or rope is determined.

An elevator load bearing assembly () includes a plurality of cords () within a jacket (). The jacket has a plurality of grooves () spaced along the length of the belt assembly. Each groove has a plurality of portions () aligned at an oblique angle (A, B) relative to a longitudinal axis () of the belt (). In one example, the grooves are separated such that there is no longitudinal overlap between adjacent grooves. In another example, transitions () between the obliquely aligned portions are at different longitudinal positions on the belt. Another example includes a combination of the different longitudinal positions and the non-overlapping groove placement.

Elevator belt assembly with noise reducing groove arrangement

An elevator system design incorporates a belt having a jacket coating a plurality of elongate load bearing members such as steel cords. The jacket includes a plurality of spaced grooves on at least one side of the belt. The width of the grooves and the size of at least the drive sheave in the system are selected so that a ratio of the groove width to the sheave diameter is within a selected range. In one example, the ratio preferably is less than about 0.05. The grooves also preferably include a fillet at the edges of the grooves where the grooves meet with the sheave-engaging surface on the belt jacket.

Elevator system design including a belt assembly with a vibration and noise reducing groove configuration

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South Windsor, CT, United States of America

Xiaodong Luo