Abstract: An elevator may include a brake apparatus such as a safety apparatus or a service brake, for example. The brake apparatus may be designed to generate a stepped braking force for braking an elevator car of the elevator. A plurality of brake cylinder assemblies may be configured so as to supply different braking forces. The brake cylinder assemblies may in some cases include a piston, a spring, and a brake pad. Moreover, a valve assembly may be utilized by one or more of the brake cylinder assemblies. Additional features of the brake apparatus may involve a compressor, a pressure accumulator, a pressure regulating valve.

Abstract: An elevator may include a brake apparatus such as a safety apparatus or a service brake, for example. The brake apparatus may be designed to generate a stepped braking force for braking an elevator car of the elevator. A plurality of brake cylinder assemblies may be configured so as to supply different braking forces. The brake cylinder assemblies may in some cases include a piston, a spring, and a brake pad. Moreover, a valve assembly may be utilized by one or more of the brake cylinder assemblies. Additional features of the brake apparatus may involve a compressor, a pressure accumulator, a pressure regulating valve.

Abstract: An elevator system including an elevator shaft and at least one elevator cab which can move in the elevator shaft. The elevator system has a distributed control system having a first evaluation unit, respectively associated with the at least one elevator cab, and has at least one second evaluation unit, associated with the elevator shaft. A bus link connects the first evaluation unit and the at least one second evaluation unit to one another. The first evaluation unit has a set of limit curves containing limit curves for the actuation of a braking device and/or a safety gripping device that are calculated and scaled in line with a current operating state, the first evaluation unit being configured to trigger the safety gripping device or the braking device if one of the limit curves is exceeded. Defined ends of the limit curves limit a scope of movement for the at least one elevator cab.

Abstract: The invention relates to an elevator system having an elevator shaft and at least one elevator cabin movable inside the elevator shaft. The elevator system further comprises a decentralized control system having a first analysis unit associated with one of the at least one elevator cabin, a second analysis unit associated with the elevator shaft, and a number of third analysis units. The first, second, and third analysis units are connected to one another via a bus connection, wherein signal transmission occurs via the bus connection using a safety protocol such that the transmission of safety-relevant data is allowed between the analysis units. The safety protocol is structured such that transmission errors are detected and data corruption is indicated. Moreover, the first analysis unit associated with the elevator cabin is connected to sensors for securely detecting the position of the elevator cabin, allowing control of safety devices of the elevator system.