Patent ID: 8820482
Filing Date: 2014-09-02
Classification: B66B

Abstract:
1. A safety apparatus for an elevator apparatus which can move a cab via a drive, comprising: a monitoring unit for monitoring the drive based on at least one of data and monitoring signals; a first safety circuit, which has a closed conduction state and an open conduction state, with an interruption apparatus for interrupting the drive depending on the conduction state of the first safety circuit; a safety device comprising at least two sensors that are switched between at least two switching states depending on a closing state of an elevator door of the elevator apparatus to be detected by the sensors; and a switching unit that is switched between at least two switching states by connection to the safety device to effect one of the closed and open conduction states of the first safety circuit, wherein the switching unit comprises a transmission device for transmitting at least one of the data and the monitoring signals to the monitoring unit, and wherein the transmission device is a controller that has a connection to the safety device, and the transmission device operates to switch the switching unit.