Otis Elevator Company

Martin J Hardesty

Bruce P Swaybill

James Leo Hubbard

Patricia Derwinski

Jesse R Richter

Daniel B Davis, Iii

Christopher H Koenig

Gary P Mendrala

John Eschenbrenner

Gregory M O'Seep

Robert K Williams

Richard N Fargo

Mark R Gurvich

Tadeusz Pawel Witczak

Jun Ma

Zbigniew Piech

Sandeep Sudi

Michael C Lang

Tadeusz Witczak

Daniel B Davis Iii

A belt for an elevator system includes one or more tension members extending along a belt length, and a jacket at least partially encapsulating the one or more tension members. The jacket defines a traction surface configured to interface with a traction sheave of the elevator system, a back surface opposite the traction surface, and two edge surfaces extending between the traction surface and the back surface. The traction surface includes a convex shaped segment extending at least partially across the traction surface between the two edge surfaces.

Elevator system belt

An illustrative example embodiment of an elevator system includes a machine including a motor and a brake. The machine is configured to selectively cause movement of an elevator car. At least one vibration sensor situated near the machine provides an indication of operation of the machine to indicate at least stops and starts of the machine associated with stopping and starting movement of the elevator car.

Elevator monitoring using vibration sensors near the elevator machine

A method is disclosed of retrofitting an elevator machine with primary and secondary braking, the machine being disposed on a machine support frame in an elevator machine room, and engaging one or more ropes for providing selective movement of an elevator car disposed in an elevator shaft, the machine having a drive sheave including a cylindrical brake drum, and brake components including dual brake arms; the method including: removing the brake components; affixing flanged disc segments about the drum and interlocking the flanged disc segments to form a brake rotor; and mounting respective brake calipers to frame mounts for providing primary and secondary braking to the elevator machine.

Retrofitting an elevator machine with primary and secondary braking

Disclosed is a method for retrofitting an elevator machine with a thrust bearing, including removing, from a bearing stand, a first cover plate, providing access to an end portion of a motor shaft, securing an extension shaft against the end portion of the motor shaft, securing a thrust bearing housing against or axially offset from the bearing stand, positioning a thrust bearing in the bearing housing, wherein an inner race of the thrust bearing is securely positioned against, and axially fixed to, the extension shaft, and an outer race of the thrust bearing is securely positioned against the bearing housing, and securing a second cover plate to the bearing housing.

Method and kit for retrofitting elevator machines with thrust bearing, and retrofitted elevator machine

A method () for constructing a building () with an elevator system () is disclosed. The method () may include forming a first hoistway () for the elevator system () within two adjacent levels () of the building (), installing a first stationary part () of a first linear permanent magnet motor within the first hoistway (), placing a first elevator car () within the first hoistway (), mounting a first moving part () of the first linear permanent magnet motor on the first elevator car (), and using the first stationary part () and the first moving part () of the first linear permanent magnet motor to generate a vertical thrust force to move the first elevator car () within the first hoistway (), the first elevator car () carrying at least one of passengers, equipment and materials for construction of upper levels of the elevator system () and the building ().

Ropeless high-rise elevator installation approach

An elevator system includes a car, configured to travel through a hoistway; a first stationary drive unit, configured to be mounted in a hoistway, a first movable drive unit, configured to be functionally coupled to the car and to the first stationary drive unit, and a second movable drive unit, configured to be functionally coupled to the car and to the first stationary drive unit.

Self-propelled cargo lift for elevator systems

A load bearing member for supporting an elevator car has a plurality of tension members that bear the weight of the elevator car. The plurality of tension members extends along a length. An outer cover at least partially covers the plurality of tension members and has a first surface and a second surface.

Elevator load bearing member

A load bearing member () for supporting an elevator car () has a plurality of tension members () that bear the weight and counterweight of the elevator car (). The plurality of tension members extends along a length. An outer cover () envelopes the plurality of tension members and has a first surface and a second surface. The plurality of tension members are sandwiched between the first surface () and the second surf ace (). The first surface is for traction on a sheave (). The first surface and the second surface define a cross-section () transverse to the length of the load bearing member. The cross-section has a first end portion (), a middle portion () and a second end portion (). The middle portion has a first width (w) between the first surface and the second surface which is smaller than a second width (w) between the first surface and the second surface of one of the first end portion and the second end portion.

Growing community of inventors

West Hartford, CT, United States of America

Martin J Hardesty