Inventio Ag

Karsten Gensicke

Eric Birrer

Josef A Muff

Rudolf Eckenstein

Carlos Latorre Marcuz

Marcel Imfeld

Franz Weingartner

Reinhard W&ouml;bcke

Reinhard Wobcke

A speed limiter for an elevator system includes: at least one speed limiter wheel having a first radial cam with lobes, and at least a second, phase-shifted radial cam with lobes; a first mass, which is rotatably arranged in a first pivot bearing and which together with a first roller rolls on the first radial cam such that the first mass follows a first oscillating motion when the speed limiter wheel rotates; and a second mass, which is rotatably arranged in a second pivot bearing and which together with a second roller rolls on the second radial cam such that the second mass follows a second oscillating motion when the speed limiter wheel rotates.

Speed limiter in an elevator system

A method and detection system monitors the speed of an elevator car and, in case of excess speed caused by brake failure of a motor brake or shaft fracture of a drive pulley shaft, a safety circuit is opened and the detection system is transferred from a normal operational state (State) to a retardation state (State) in which it is monitored whether the elevator car is retarded after defined speed presets. After a successful retardation, the detection system is transferred to a state of standstill monitoring (State) in which it is monitored whether the elevator car leaves its standstill position. If the presets of Stateor Stateare not fulfilled, the detection system is transferred to a braking state of the brake (State) in which a brake which fixes the elevator car is activated.

Method and detection system for monitoring the speed of an elevator car

An elevator installation with an elevator car and a counterweight, a suspension cable suspending the elevator car and the counterweight, and a compensating cable compensating the effect of the weight of the suspension cable, is equipped with a compensating cable guide which for the purpose of guiding the compensating cable has at least one brush.

Elevator installation with compensating-means guide

A safety brake for the load receiving portion of an elevator includes a fixing device that is displaceable relative to the load receiving portion in the direction of the guide rail between two abutments fastened to the load receiving portion. The unlocking of the safety brake after a braking process is achieved by moving the load receiving portion with the assistance of the elevator drive unit oppositely to the direction of movement before the braking process, so that one of the abutments fastened to the load receiving portion strikes the fixing device to unlock it from the guide rail.

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Buchrain, Switzerland

Karsten Gensicke