Otis Elevator Company

Olivier Stanislas Dukacz

Pascal Rebillard

Nicolas Fonteneau

Frédéric Beauchaud

Gérard Sirigu

Thomas Coquerelle

Dominique Goulet

Peter L Herkel

Gerard Sirigu

Dirk Heinrich Tegtmeier

Andres Monzon

Ralph S Stripling

Juan Martin

Juan Antonio Illan

Michel Beeuwsaert

Jean-Noel Cloux

David Pillin

Fernando Del Rio

Jean-Noël Cloux

Helmut Lothar Schroeder-Brumloop

Alain Simonot

Jose Sevilleja-Perez

Florence Picard

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 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

An elevator car includes a foldable handrail mounted on top of the car. Safety switches are associated with the foldable handrail including a first safety switch and a second safety switch. The first safety switch is closed only when the handrail is folded in a fully retracted position. The second safety switch is closed when the handrail is unfolded in a fully deployed position. A safety chain is associated with the first and second safety switches for supplying power to an elevator drive system in a normal operation or an inspection operation depending on the state of the first and second safety switches.

Foldable handrail and safety switch arrangement on top of an elevator car

The elevator has a car movable vertically within a shaft between lower and upper end positions and a drive system coupled to a traction system for controlling movement of the car. A limit switch which is open when the car is in a selected distance range from one of the end positions. The limit switch forms part of a power line supplying power to the drive system for controlling movement of the car in a direction towards that end position in an inspection operation. Thus movement of the car is prevented only in that direction when the car is in the selected distance range in an inspection operation.

Elevator having a limit switch for controlling power to the drive system as an elevator car approaches a shallow pit or a low overhead

A safety device for an elevator system includes a retractable element mounted on a support. The retractable element has a stopping position in which a catch portion of the retractable element projects from the support to engage a triggering member of a safety brake associated with an elevator car as the elevator car traveling in a selected direction approaches a selected vertical position, and a retracted position. An actuator selectively controls the position of the retractable element. A position sensor is responsive to the position of the retractable element to make sure that it is in its stopping position when needed.

Safety device for securing minimum spaces at the top or bottom of an elevator shaft being inspected, and elevator having such safety devices

Growing community of inventors

Les Choux, France

Olivier Stanislas Dukacz