Otis Elevator Company

Hamilton Sundstrand Corporation

United Technologies Corporation

Raytheon Technologies Corporation

Huan Zhang

Zaffir A Chaudhry

John P Wesson

Gopal R Krishnan

Wenping Zhao

Andrzej Ernest Kuczek

Jagadeesh Kumar Tangudu

Daniel A Mosher

Susanne Marie Opalka

Fanping Sun

Mark Steven Thompson

Xiaodong Luo

Yan Chen

Richard N Fargo

Abbas A Alahyari

Derick S Balsiger

Kimberly Rae Saviers

Raja Kountanya

Nicholas R Van De Veire

Aritra Sur

Jeffrey P King

Timothy D DeValve

David Wayne Mckee

A rotor is provided. The rotor includes a central hub, an outer ring assembly and back-to-back curved webs. The outer ring assembly includes magnetic elements. The back-to-back curved webs are_radially interposed between the central hub and the outer ring assembly. The back-to-back curved webs can be circumferentially continuous about the central hub or circumferentially non-continuous about the central hub.

Lightweight rotor design with composite structure

Aircraft electric motors are described. The aircraft electric motors include a cooling system comprising an annular heat exchanger, a motor housing arranged radially inward from the heat exchanger, the motor housing defining a rotor-stator cavity and a gear assembly cavity, a rotor sleeve arranged within the rotor-stator cavity, a gear assembly arranged within the gear assembly cavity, a first shaft operably coupled to the rotor sleeve and configured to be rotationally driven by the rotor sleeve to drive rotation of a portion of the gear assembly, and a second shaft operably coupled to the gear assembly and configured to be rotationally driven by the gear assembly.

Aircraft electric motor

Aircraft electric motors are described. The electric motors include a substantially annular shaped motor housing having an outer wall and an inner wall, wherein a rotor-stator cavity is defined between the outer wall and the inner wall and a gear assembly cavity is defined radially inward from the inner wall and a gear assembly arranged within the gear assembly cavity. The gear assembly includes a sun gear operably connected to a first shaft, at least one planetary gear arranged radially outward from the sun gear and rotationally engaged with the sun gear, and a ring gear arranged radially outward from the at least one planetary gear and rotationally engaged with the at least one planetary gear, wherein the ring gear is operably connected to a second shaft.

A compound harmonic actuator is provided and includes a motor, a flex spline disposed about the motor and a wave generator radially interposable between the motor and the flex spline. The wave generator being rotatably drivable by the motor and shaped to form the flex spline into an elliptical shape with an axis such that wave generator rotations drive rotations of the axis of the ellipse of the flex spline.

Compound harmonic gear

People conveyors and components for people conveyors are described. The components include a toothed surface having at least one tooth. The at least one tooth having an engagement surface and a surface pattern comprising pattern channels formed into the engagement surface.

Sprockets for people conveyors

An elevator system includes an elevator car, one or more sheaves, and one or more belts operably connected to the car and interactive with the one or more sheaves for suspending and/or driving the elevator car. The one or more belts include a plurality of wires arranged into one or more cords, and a jacket substantially retaining the one or more cords. A cord ratio, between a smallest sheave diameter (D) of the one or more sheaves of the elevator system that are interactive with the belt and a largest cord diameter (d) of the one or more cords, (D/d) is less than about 55. A wire ratio, between the smallest sheave diameter (D) and the largest wire diameter (d) of the plurality of wires, (D/d) is between about 160 and about 315.

Elevator suspension and/or driving arrangement

An auxiliary lubricant comprising a composition, the comprising intermediate molecular weight surfactant-functionalized nanoparticles dispersed in a base oil.

Auxiliary emergency protective lubrication system for metal mechanical components

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

Elevator coated ropes or belts are disclosed. The coated rope or belt may include at least one cord and a jacket retaining the at least one cord. The cord may include a plurality of filaments. The filaments are free of second-order helical structure. In a first embodiment, the filaments includes at least one inner filament and a plurality of outer filaments surrounding the at least one inner filament. The outer filaments are bunched together by forming a first-order helical structure through the length of the cord. In a second general embodiment, the filaments are free of both first- and second-order helical structures. The filaments are bunched together by a restraining loop or adhesive at one or more locations along the length of the cord. Methods of making the tension cord are also disclosed.

Coated rope or belt for elevator systems

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.

Elevator tension members are disclosed. The disclosed tension member longitudinally extends along a longitudinal axis and includes a plurality of fibers formed into one or more primary strands or cords extending parallel to the longitudinal axis and a plurality of fibers formed into one or more secondary strands or cords extending parallel to the longitudinal axis and through less than the full length of the belt, and a jacket retaining the primary and secondary strands or cords. The secondary strands or cords have a tensile modulus greater than a tensile modulus of the jacket and less than a tensile modulus of the primary strands or cords. Methods of making the tension member are also disclosed.

Growing community of inventors

Glastonbury, CT, United States of America

Huan Zhang