Otis Elevator Company

Ralph S Stripling

Frank M Sansevero

Bernward Engelke

Peter L Herkel

Pascal Rebillard

Gerard Sirigu

Juan Martin

Juan Antonio Illan

Olivier Stanislas Dukacz

Helmut Lothar Schroeder-Brumloop

Ingo Engelhard

Sven Knuth

Carla Majuntke

Jose Sevilleja-Perez

Thomas Swyst

Andreas Stuffel

Uwe Hauer

Dirk Heinrich Tegtmeier

Mustapha Toutaoui

Alexander Mueller

Dietmar Thaler

Herbert K Horbruegger

Stefan Spannhake

Reinhard Henkel

Qingdong Richard Jiang

Burkhard Braasch

Frank Kirchhoff

Ruoming Tian

Richard Markus

Peter Von Riegen

Markus Mueller

Scott Ashworth

Raphael Pecek

Markus Müller

Olaf Märker

Carsten Deseniss

An elevator systemis provided which comprises: a hoistwayaccessible by at least one hoistway door; at least one elevator carlocated in the hoistway; a hoistway door switchassociated with the at least one hoistway door; at least one inspection switch; at least one emergency stop switch; and an elevator controller. The elevator controlleris configured to monitor the hoistway door switch, the inspection switchand the emergency stop switchand to prevent inspection mode operation of the elevator caruntil at least one change of state is detected of each of the hoistway door switch, the inspection switchand the emergency stop switch

Elevator systems

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 example elevator brake includes a first braking member that is biased by a first spring member into engagement with a braking surface. The first braking member includes a first armature arranged to be actuated by an electromagnetic actuator to disengage the first braking member from the braking surface against the biasing force of the first spring member. A second braking member is biased by a second spring member into engagement with a braking surface. The second braking member includes a second armature arranged to be actuated by an electromagnetic actuator to disengage the second braking member against the biasing force of the second spring member. A first electromagnetic actuator actuates the first armature and a second electromagnetic actuator actuates the second armature.

Elevator brake including coaxially aligned first and second brake members

A device and method for detecting a misaligned or missing step of a conveyor are disclosed. The missing step detector includes various sensors for detecting the drive speed of the conveyor and for detecting the presence of pallets or steps. The sensor output signals are correlated to determine fixed values characteristic of the specific conveyor in question. Using the fixed values as reference, the missing step detector is able to effectively monitor the conveyor for misaligned or missing steps independent of conveyor speed and time.

Signal correlation for missing step detection in conveyors

A control arrangement () for an elevator brake, comprises a control circuit () adapted to generate, according to a demand for releasing a first braking member of the elevator brake, a first actuating signal and to generate, according to a demand for releasing a second braking member of the elevator brake, a second actuating signal; a first terminal () for outputting the first actuating signal to a first electromagnetic actuating means () of the elevator brake, a second terminal for outputting the second actuating signal to a second electromagnetic actuating means () of the elevator brake; the control arrangement () being adapted to allow at least the following modes of operation: A) a normal operation mode in which the first and the second actuating signals are supplied synchronously to the first and second electromagnetic actuation means (), respectively, and B) a single braking member test operation mode, in which one of the first and second actuating signals is supplied to the respective one of the first and second electromagnetic actuating means (), and an actuating signal for permanently releasing the respective of the first and second braking members () is supplied to the other one of the first and second electromagnetic actuating means ().

Single brakeshoe test (electrical) for elevators

A display device () for use with a passenger conveyor () provides a traffic flow direction indicator and visible maintenance information. One example includes a display panel () supported on a surface () that is conveniently positioned between a handrail () and a landing (). In one example, a single display panel () alternatively provides the traffic flow direction indicator or the maintenance information. In another example a first display panel () and a second display panel () are supported on a plate () that is selectively moveable into different positions, depending on which display panel should be visible. One example includes a remote signaling device () that allows an individual to control the information shown on the display device ().

Combined traffic flow and maintenance information display for a passenger conveyor

People mover () comprising an endless tread belt () formed from several tread elements () connected to one another, which is driven by a drive unit about a first and second reversal point (), and a side skirt () moved along with tread belt (), the side skirt () comprising flange elements () joined to the tread element () and bridge elements () connected movably relative to flange elements (). A sensor () is arranged adjacent to the side skirt (), the sensor () having a limited detection range perpendicular to the circulation direction of side skirt (), and a plurality of marking elements are arranged in a line on side skirt () along the circulating direction having a limited width perpendicular to the circulating direction.

Safety monitoring system for a people conveyor

A display device () for use with a passenger conveyor () provides traffic flow direction information. One example includes a display panel () supported on a surface () that is conveniently positioned beneath the handrail () near a landing (). In a particular example, a handrail entry module () includes a handrail entry () and a support surface () that supports the display (). In one example, the surface () extends down and out from a vertical surface () associated with the handrail entry () to maximize visibility of the display.

Traffic flow indicator for a passenger conveyor

A method of controlling the drive of conveyor installation which includes a drive motor ( ) and a frequency converter ( ) whose output is adjustable, between a load operation and an idle mode, in the form of an escalator ( ) or a moving sidewalk, where: in the load operation mode drive motor ( ) is supplied with a line voltage at an essentially constant line frequency (f ), and in the idle mode with an output voltage of the frequency converter ( ); the line voltage and the frequency converter's output voltage are compared with respect to frequency and phase position; the frequency converter ( ) is set for an output frequency which has a predetermined spacing (&Dgr;f , &Dgr;f ) from the line frequency (f ); a demand to switch modes is signalled by a conveyance signal generator ( ); and at the point in time (t , t ), after a demand to switch modes has been signalled, when the output frequency of the converter ( ) has reached the predetermined frequency spacing (&Dgr;f , &Dgr;f ) from the line frequency (f ), and a predetermined phase spacing has been achieved between the frequency converter's output voltage and the line frequency (f ), a switch-over signal ( ) is emitted to switch the drive motor ( ) between the frequency converter supply and the line supply.

Process for switching between main supply and a frequency inverter and vice versa for an escalator drive

Growing community of inventors

Berlin, Germany

Ralph S Stripling