United Technologies Corporation

Otis Elevator Company

Sikorsky Aircraft Corporation

Howard A Winston

Alan Matthew Finn

Ravi Rajamani

Fanping Sun

Pei-Yuan Peng

Alexander I Khibnik

Jae-Hyuk Oh

Balkrishna S Annigeri

Michael G Mastrianni

Sorin Costiner

Jihua Wang

Brian Drost

Anthony Santo Maniaci

Andrew Palladino

Thomas R Matthis

Ricardo A Benitez

Julie A Ireland

Robert M Cohen

A method of electrical system fault detection and location determination includes measuring a baseline time domain reflectometry (TDR) waveform along a wire path of the electrical system and obtaining an operating TDR waveform along the wire path. The operating TDR waveform is compared to the baseline TDR waveform to derive a difference TDR waveform, and a difference energy is calculated utilizing the difference TDR waveform. The difference energy is monitored over time for peaks in the difference energy and potential electrical system faults are identified via the peaks in the difference energy.

System and method for health monitoring of electrical systems

A process for optimizing maintenance work schedules for at least one engine includes the steps of retrieving at least one set of data for an engine from a computer readable storage medium; selecting at least one scheduling parameter for the engine; selecting a set of maintenance rules for the engine; selecting at least one maintenance work decision; selecting at least one objective for the engine; optimizing the at least one objective to generate at least one optimal maintenance work decision; and generating at least one optimal maintenance work schedule for the engine.

Process and system for multi-objective global optimization of maintenance schedules

An elevator includes a car follower associated with each of a pair of guide rails, and carrying electromagnets which are spaced from electromagnets on an elevator car. The electromagnets on the car and car follower create a repulsive force tending to center the car between the car follower electromagnets associated with the two guide rails. Preferably, the car follower electromagnets are interconnected into a single car follower such that they move together.

Elevator active suspension utilizing respulsive magnetic force

A structural integrity monitoring system includes a piezoelectric sensor that is adapted to be secured to or embedded within an item of interest. A resistive element is placed in series with the piezoelectric sensor. An output from the series combination of the resistive element and the sensor is conditioned and then transmitted wirelessly to a remote location. An interface located at the remote location receives the transmitted signal, determines the content of the signal and provides an output indicative of the structural integrity of the item of interest.

Structural integrity monitoring system including wireless electromechanical impedance measurement

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Woodbury, CT, United States of America

Howard A Winston