Otis Elevator Company

Gregor Stricker

Peter L Herkel

James Leo Hubbard

Pascal Rebillard

Gerard Sirigu

Nicolas Fonteneau

Emmanuel Convard

Prasanna Nagarajan

Antoine Adrian Blanchard

Helmut Lothar Schroeder-Brumloop

Guillaume Georges Bonatre

Fabrice Boniface

Camilo Cardona

Michael Peters

Robert B Leach

Stephane Gourjeande

Alexander Paetow

Ricardo Cano-Torres

Robert Bryan Leach

Guillaume Bonatre

Javier Garcia-Casla

Nicolas Fontenau

Gianluca Foschini

An illustrative elevator system includes an elevator car, a machine including a motor that provides a motive force for moving the elevator car along a travel path and a brake that resists movement of the elevator car, and a brake controller. The brake controller is configured to determine when the elevator car is within a selected range of at least one end of the travel path. The brake controller inhibits a delay in application of the brake when the elevator car is within the selected range and permits a delay in application of the brake when the elevator car is outside of the selected range.

Elevator machine brake delay control

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

Gregor Stricker