An elevator system 2 is provided which comprises: a hoistway 6 accessible by at least one hoistway door 10a, 10b, 10c; at least one elevator car 4 located in the hoistway 6; a hoistway door switch 12a, 12b, 12c associated with the at least one hoistway door 10a, 10b, 10c; at least one inspection switch 16; at least one emergency stop switch 18; and an elevator controller 24. The elevator controller 24 is configured to monitor the hoistway door switch 12a, 12b, 12c, the inspection switch 16 and the emergency stop switch 18 and to prevent inspection mode operation of the elevator car 4 until at least one change of state is detected of each of the hoistway door switch 12a, 12b, 12c, the inspection switch 16 and the emergency stop switch 18.

An unlocking device with an actuator releases a safety cover of a maintenance opening for opening. The locking device has a safety circuit for actuating the actuator. The safety circuit includes at least one first switching contact and a second switching contact arranged in series, wherein the actuator in a closed state of the first and the second switching contacts is connected by the safety circuit with a power source, and the first switching contact can be switched by a control unit. One or more of the unlocking device can be used in an elevator system.

A service alarm device for use in an elevator system, the service alarm device including a control board configured to receive at least one safety signal, and an alarming device in communication with the control board, wherein the control board is configured to activate the alarming device based on the at least one safety signal.

An elevator system (1) including at least one refuge space (7, 8) and at least one sensor (9). The at least one sensor (9) is configured to detect weight in the at least one refuge space (7, 8) and produce at least one safety signal (21) indicating the presence of weight in the at least one refuge space (7, 8). The system can be used to improve the safety in the at least one refuge space (7, 8) in the event that the usual safety procedures have either failed or not been followed. For example, if for some reason the elevator system (1) has not been placed into a safe state before a maintenance worker (10) accesses the at least one refuge space (7, 8), the system will detect them and can produce at least one safety signal immediately indicating their presence in the at least one refuge space.

An elevator shaft access safety device for an elevator shaft access provided with landing doors extending thereacross, the landing doors being flanked by substantially vertical first and second jambs, the elevator shaft access safety device being securable to the first and second jambs while the landing doors remain closed.

An elevator shaft access safety device for an elevator shaft access provided with landing doors extending thereacross, the landing doors being flanked by substantially vertical first and second jambs, the elevator shaft access safety device being securable to the first and second jambs while the landing doors remain closed.

According to an aspect, a method includes detecting, by a computing system, whether there are any pre-existing objects between a first group of sensors of a sensor array in an elevator shaft. The computing system detects whether there is a foreign object between a second group of sensors of the sensor array in the elevator shaft, where the second group of sensors includes at least one sensor that differs from the first group of sensors. The computing system triggers a modification to a control aspect of an elevator car in the elevator shaft based on detection of the foreign object.

An elevator door bypass apparatus, configured to bypass a landing door or a car door at a time of an inspection of an elevator, includes: a door mode selector switch configured to switch a door mode between a normal operation and a bypass operation; a bypass target selector switch configured to switch between bypassing of the landing door and bypassing of the car door; and a bypass relay configured to, in a case that the door mode has been switched to the bypass operation by the door mode selector switch, bypass the landing door when the bypassing of the landing door has been selected by the bypass target selector switch, and bypass the car door when the bypassing of the car door has been selected by the bypass target selector switch.

Elevator access systems having an access control module operably connected to an elevator system and an access device located within the access control module and removable therefrom, wherein when the access device is within the access control module a normal mode of operation of the elevator system is activated and when the access device is removed from the access control module, the elevator system enters a safety mode of operation.

A monitoring system for transport installations for persons, which installations are arranged as elevator, escalator or moving walkway, includes at least one interrogation device and at least one safety switch, which switch is connected with the interrogation device by an electrical safety circuit and which monitors a door lock of the transport installation for persons. An independent energy supply device supplies power to the interrogation device.