Otis Elevator Company

Peter L Herkel

Dirk Heinrich Tegtmeier

Juergen Gewinner

Pascal Rebillard

Mustapha Toutaoui

Nicolas Fonteneau

Hans-Kilian Josef Spielbauer

Jean-Noel Cloux

Bernd L Ackermann

Alberto Vecchiotti

Michael Mann

Andres Monzon

Ralph S Stripling

Frédéric Beauchaud

Gérard Sirigu

Thomas Coquerelle

Christoph M Ernecke

Herbert K Horbruegger

Uwe Schonauer

Michel Beeuwsaert

Olivier Stanislas Dukacz

David Pillin

Fernando Del Rio

Ingo Engelhard

Ruediger Loeb

Alan Matthew Finn

Daryl J Marvin

James Leo Hubbard

Gerard Sirigu

Ronnie E Thebeau

Helmut L Schroder-Brumloop

Steven D Coste

Antonio De Miguel Urquijo

Armando Servia

Fernando Del Rio Sanz

Leslie C Watterson

Stefan Spannhake

Michael Wilke

Jean-Noël Cloux

Burkhard Braasch

Frank Kirchhoff

Dominique Goulet

Alain Simonot

Gunter Blechschmidt

Florence Picard

Guillaume Georges Bonatre

Helmut Lothar Schroeder-Brumloop

Robert B Leach

Jean-Pierre Pougny

Sven Knuth

Martin Georg Walter Hnida

Herbert Horbrügger

Fabrice Boniface

Paul C Hoppie

Jan Ruhnke

Wolfgang Lutz Zemke

Julián Cabañas Falcón

Gregor Stricker

Stephane Gourjeande

Axel S Pfeffer

Lutz Hentschel

Gianfranco Giannini

Shari R Parillo

Hans K Spielbauer

Robert Mazzamauro

Igor Kuzmin

Matthias Hoinkis

Raphael Pecek

Felix Benjamin Donath

Andrés Monzón-Simón

Francisco Luis Sanz Delgado

Norbert Diwisch

Herbert Horbr&uuml;gger

Alexander Paetow

Axel Steffen Pfeffer

Hermann Ludwig Lorenz

Axel Pfeffer

Robert Bryan Leach

Guillaume Bonatre

An elevator safety system () configured for monitoring an elevator system () comprises at least one safety node () and an evaluator (). The at least one safety node () is configured for monitoring at least one component of the elevator system () and/or of the elevator safety system () and providing signals representing the current status of the at least one monitored component. The evaluator () configured for receiving the signals from the at least one safety node (); and for determining a safety status of the elevator system () and/or of the elevator safety system () from a combination of the received signals.

Elevator safety system

An elevator system () comprises a hoistway () extending between a plurality of landings (); the hoistway () comprising landing portions (A) and intermediate portions (B), wherein each landing portion (A) extends around a corresponding landing () and each intermediate portion (B) is located between two adjacent landing portions (A); an elevator car (), which is configured for traveling along the hoistway (); a first position determining system (), which is configured for determining the current position of the elevator car () while it is located within one of the landing portions (A); and a second position determining system (), which is configured for determining the current position of the elevator car () while it is located within one of the intermediate portions (B).

Elevator system

An electronic test node () for a safety chain () in a passenger conveyor system includes an electrical connection () for an associated safety switch (). A processor () is configured to monitor a signal carried by the electrical connection () so as to detect whether the associated safety switch () is open or closed. The electronic test node () further includes a test switch () connected in series with the electrical connection (), wherein the processor () is configured to run a test by selectively opening the test switch () and monitoring for a change in the signal carried by the electrical connection ().

Electronic test nodes for automatic check of a safety chain

An elevator safety system () for an elevator system () with a self-diagnostic functionality includes at least two safety channels (), wherein each safety channel () is configured for supplying a safety signal () in case a safety issue has been detected. The elevator safety system () comprises a self-diagnostic evaluator (), which is configured for receiving any safety signals () supplied via the safety channels (); starting a timer () for measuring a predetermined period of time in case a safety signal () is supplied on one of the safety channels (); and stopping any further operation of the elevator system () in case the received signal () is still supplied after the predetermined period of time has expired.

An elevator safety system includes: at least two sensors, each of the sensors being configured for monitoring at least a portion of a hoistway of an elevator system and providing monitoring signals; a transformation unit which is configured for transforming the monitoring signals provided by at least one of the sensors and producing transformed signals corresponding to a common direction of vision; a comparison unit which is configured for comparing the at least two transformed signals and for generating a failure signal if a difference between the at least two transformed signals exceeds a predetermined threshold; and a detection unit, which is configured for detecting a person or undesired item in at least one of the two transformed signals and for generating an alarm signal if a person or undesired item is detected.

An automatic elevator safety system includes an elevator safety circuit and an external server. The elevator safety circuit is configured for monitoring the operation of an elevator system comprising at least one elevator car traveling along a hoistway, and an elevator control configured for controlling the movement of the elevator car. At least one of the elevator control and the elevator safety circuit is configured for sending data comprising information about the current state of the elevator system to the external server, in particular in case a safety issue has been detected. The external server is configured for (A) receiving the data sent by the at least one elevator safety circuit; (B) analyzing the received data; and (C) depending on the result of the analysis, sending commands to the elevator system.

Automatic rescue operation in an elevator system

An elevator safety device () is configured for restricting the movement of an elevator car () of an elevator system () along its pathway in order to prevent the elevator car () from moving beyond at least one limit position. The elevator safety device () is configured for performing at least one learning run () for setting the at least one limit position.

Elevator safety device

An elevator safety system comprises: at least one position sensor, which is configured for determining a position value representing the position of the elevator car within the hoistway; at least one door sensor, which is configured for detecting whether the at least one door is closed; a limit setting unit, which is configured for determining an operation status of the elevator car and for setting at least one position limit according to the determined operation status; and a comparison unit, which is configured for comparing the determined position value with the set position limit and for determining an error condition, if the position value is not in compliance with the at least one position limit and the at least one door sensor indicates that at least one door is not closed.

Elevator safety system and method of monitoring an elevator system

An elevator system () comprises: a hoistway () extending between a plurality of landings (); at least one hoistway door () allowing access to the hoistway (); an elevator car (), which is configured to move along the hoistway (); at least one safety (), which is attached to the elevator car () and configured to stop any movement of the elevator car () when activated; an electronic safety actuator (), which is configured to activate and deactivate the at least one safety (); and a door safety switch (), which is configured to monitor the at least one hoistway door () and which is connected with the electronic safety actuator in order to allow activating the at least one safety (), if the door safety switch () detects that the at least one hoistway door () is not closed.

Elevator safety system and method of operating an elevator system

Elevator control system, comprising an elevator control device for operating an elevator car which is adapted to be operated within an elevator shaft, and an inspection control station configured to communicate with the elevator control device for operating at least one function of an elevator system in an inspection or maintenance operation mode, and configured for attachment at a storing location, wherein the storing location is at the elevator car or within the elevator shaft or in proximity of the elevator shaft. The inspection control station is adapted to be detachable from the storing location and configured to operate as remote inspection control station when detached from the storing location through wireless communication with the elevator control device, and is configured to be movable and operable in the inspection or maintenance operation mode from inside and outside of the elevator car and within the elevator shaft.

Elevator control system and elevator system having inspection control station

An elevator brake control system () is described, in particular for controlling an elevator brake in a machine room-less elevator, the elevator including a drive machine drivingly coupled to an elevator car for moving the elevator car between a plurality of landings in a hoistway, and an elevator brake having at least an engaged condition for holding the elevator car at a fixed position in the hoistway, and a released condition for allowing the elevator car to move along the hoistway; the elevator brake control system () comprising a first safety device (T) and a second safety device (T), each of the first safety device (T) and the second safety device (T) responsive to detection of a failure in any sub-system of the elevator, such as to bring the elevator brake into its engaged condition in response to detection of such failure; wherein each of the first safety device (T) and the second safety device (T) comprises a power semiconductor switching device.

Elevator brake control system

An elevator system includes a primary source of electrical power; a power unit having a power supply, the power supply producing DC power from the primary source of electrical power. A rescue storage device provides power to the elevator system when the primary source of electrical power is unavailable. The rescue storage device is coupled to an output of the power supply to provide additional DC power with the DC power when the primary source of electrical power is available and an increased power requirement is present.

Elevator system using rescue storage device for increased power

A system and method for providing a protective extra low voltage power supply in an elevator system () is disclosed. The power supply system () may include a switch mode power supply () configured to provide an output voltage, a first voltage monitor () and a second voltage monitor (). Each of the first voltage monitor () and the second voltage monitor () may be configured to receive the output voltage and determine an over-voltage condition at the switch mode power supply ().

System and method for limiting over-voltage in power supply system

A system for managing power in an elevator system, the system including an elevator controller; an elevator car in communication with the controller; a component associated with the elevator car; a power management system in communication with the controller; and a database in communication with the power management system, the database including a power profile; wherein the power management system provides power commands to the elevator controller to enter a power savings mode in response to the power profile, the controller sending a power off signal to the component in response to the power command.

Adaptive power control for elevator system using power profiles

An exemplary method is useful for controlling movement of an elevator car in an elevator system that includes a machine that selectively moves the elevator car and a machine brake that selectively resists movement of the elevator car. The method includes determining whether the elevator car is near a landing and determining whether a door of the elevator car is open. A desired operation includes desired movement of the elevator car while the elevator car is near the landing and the door is open. A determination is made whether the elevator car moves other than according to the desired movement. The machine brake is applied for stopping movement of the elevator car responsive to elevator car movement other than the desired movement while the elevator car is near the landing and the door is open.

Elevator car control in a landing zone using a machine brake in response to undesired car movement

Growing community of inventors

Berlin, Germany

Peter L Herkel