Otis Elevator Company

Benjamin J Watson

Zbigniew Piech

Daryl J Marvin

Stephen R Nichols

Craig Drew Bogli

Randy Roberts

Richard L Hollowell

Xiaodong Luo

Pawel Witczak

Patricia L Driesch

Erik Khzouz

Steven M Millett

Marcin Wroblewski

Arthur T Grondine

Camilo Cardona

KilMoon Yoon

Jeongki Shin

Tao Mu

Piech Zbigniew

An elevator system includes an elevator car. A first drive assembly engages a first tension member. The first tension member is coupled to the elevator car and to a first counterweight. A second drive assembly engages a second tension member. The second tension member is coupled to the elevator car and to a second counterweight. The first tension member can be coupled to the elevator car at a first position and the second tension member can be coupled to the elevator car at a second position opposite the first position.

Elevator system roping arrangement

This disclosure relates to a system and method configured to identify and, if necessary, respond to conditions indicative of electromagnetic brake temperature, and in particular relates to passenger conveyers, such as elevators, employing the system and method. More specifically, an example passenger conveyer system includes an electromagnetic brake and a controller configured to identify a condition indicative of a temperature of the electromagnetic brake approaching a boundary of a predetermined operating range.

System and method configured to identify conditions indicative of electromagnetic brake temperature

A machine assembly for use in an elevator system is provided including a drive sheave () configured to rotate about a first axis of rotation (R). A first roller shaft () is configured to rotate about a second axis of rotation (S) substantially parallel to the first axis of rotation. Rotation of the first roller shaft about the second axis of rotation is configured to rotate the drive sheave about the first axis of rotation. A first motor is operably coupled to the first roller shaft and is configured to rotate the first roller shaft about the second axis of rotation.

Traction geared machine for elevator

An electronic speed detection system is provided. The electronic speed detection system includes an accelerometer coupled to a moving object and a hybrid altimeter, which includes a first pressure sensor coupled to the moving object and a second pressure sensor. The electronic speed detection system also includes a controller comprising a memory and a processor. The memory storing computer program instructions executable by the processor to cause the electronic speed detection system to determine a normalized position based on first inputs received from the hybrid altimeter, or determine a corrected velocity position based on a second input received from the accelerometer and the normalized position.

Hybrid altimeter for measuring vertical velocity

A safety brake actuation mechanism for a hoisted structure includes a housing operatively coupled to the hoisted structure. Also included is a first brake member coupled to the housing, the first brake member moveable between a braking position and a non-braking position. Further included is a retaining assembly moveable between a first position and a second position and engageable with the first brake member, the retaining assembly retaining the first brake member in the non-braking position in the first position and permitting the first brake member to move to the braking position in the second position. Yet further included is an electric actuator operatively coupled to the retaining assembly and biasing the retaining assembly to the first position in a powered state of the electric actuator, the retaining assembly movable to the second position in a non-powered state of the electric actuator.

Safety brake actuation mechanism for a hoisted structure

An exemplary method of assembling an elevator machine frame includes situating at least a portion of a motor in a desired position, placing an elevator frame support plate against the portion of the motor, connecting a plurality of support rods to the support plate and connecting another support plate to the support rods such that the support plates are spaced from each other and in a desired alignment with each other.

Method of assembling an elevator machine frame

A braking device for an elevator is disclosed. The device may include a motor, a braking system, a first switch, and a second switch. The motor may be capable of generating a counter-electromotive force. The braking system may move to a disengaged position upon being energized and may move to an engaged position upon being de-energized. The first and second switches may have an open state. In the open state, the switches electrically couple the motor to the braking system so that the counter-electromotive force of the motor may energize the braking system.

Braking device

An example elevator machine frame assembly () includes a plurality of support plates () configured to support at least selected portions of an elevator machine including a traction sheave (). The support plates each comprise a plurality of mounting surfaces () that are aligned within a plane that intersects with an axis of rotation () of a traction sheave that is supported by the frame assembly. A plurality of support rods () are connected to the support plates (). The support rods maintain a desired spacing between the plates and a desired alignment of the plates relative to each other. In a disclosed example, the support rods include a sound dampening material () such as sand in an interior of the rods.

Growing community of inventors

Burlington, CT, United States of America

Benjamin J Watson