A safety device of a lift system may include a car, an evaluation device, and a measuring device. Conditions where departure from a door zone with an open car door or where impermissible accelerations/speeds are reached within the door zone are identifiable by way of the evaluation device and output signals from the measuring device. In such conditions, a control signal may be generated for braking the car. A safety circuit may be connected to the evaluation device and ensure a first safe zone in a shaft head of a lift shaft during an inspection run. The safety circuit may have a safety switch, and the car may include a tripping means for tripping the safety switch. The safety switch and the tripping means have a first relative position upon which the first safe zone is based, and entry of the car into the first safe zone during the inspection run is preventable by tripping the safety switch, which leads to generation of the control signal and braking of the car.

A safety device of a lift system may include a car, an evaluation device, and a measuring device. Conditions where departure from a door zone with an open car door or where impermissible accelerations/speeds are reached within the door zone are identifiable by way of the evaluation device and output signals from the measuring device. In such conditions, a control signal may be generated for braking the car. A safety circuit may be connected to the evaluation device and ensure a first safe zone in a shaft head of a lift shaft during an inspection run. The safety circuit may have a safety switch, and the car may include a tripping means for tripping the safety switch. The safety switch and the tripping means have a first relative position upon which the first safe zone is based, and entry of the car into the first safe zone during the inspection run is preventable by tripping the safety switch, which leads to generation of the control signal and braking of the car.

A remote triggering device, an overspeed governor assembly and an elevator system are provided. The remote triggering device includes: an actuator seat mounted on a fixed bracket and rotatable between a first position and a second position; an actuator disposed on the actuator seat and having an action end movable between a retracted position and an extended position; and a reset lever extending from the actuator seat; wherein in a case that the centrifugal mechanism of the overspeed governor assembly rotates in a first direction corresponding to ascending of an elevator car, when the action end of the actuator moves to the extended position, the centrifugal mechanism of the overspeed governor assembly contacts the action end of the actuator and drives the actuator seat to rotate from the first position toward the second position, and the reset lever rotates with the actuator seat.

A movable car mounted governor assembly for an elevator car is provided. The assembly includes a chassis releasably mounted to an upright of an elevator car and a governor operationally mounted to the chassis. The chassis is configured to move from a first position to a second position relative the upright, wherein in the first position the chassis is fixedly secured to the upright and in the second position the chassis is not fixedly secured to the upright.

An illustrative example elevator system includes an elevator car and a valve assembly that selectively directs fluid flow to control movement of the elevator car. At least one sensor provides an indication of a current status of the elevator car, which includes at least a position of the elevator car or a speed of the elevator car. A processor receives the indication from the at least one sensor and adjusts operation of the valve assembly when the current status of the elevator car is different than a predetermined desired status.

An overspeed protection switch, an overspeed governor assembly and an elevator system are provided. The overspeed protection switch includes: a trigger member, which is in an untriggered position when the overspeed governor assembly is in normal operation, and which is capable of rotating to a triggered position from the untriggered position when being toggled by a centrifugal mechanism of the overspeed governor assembly in case of overspeed of the overspeed governor assembly; at least one protrusion connected to the trigger member and rotating together with the trigger member; a reset lever which is rotatable along an axial axis from an idle position to act on one of the at least one protrusion to drive the trigger member to return to the untriggered position from the triggered position; and an actuation device which, in response to a reset command, acts on the reset lever to rotate the reset lever.

A fall-arrest device test system for testing a fall-arrest device configured to be mounted around a wire rope of an elevator. The test system further comprises a loading lever having a first end arranged to rotate around a pivot between a first operational position and a second operational position, and the loading lever being operatively coupled to the wire rope, such that when the loading lever is at the first operational position the lever stretches the wire rope and when the loading lever is at the second operational position the loading lever does not stretch the wire rope. Methods for testing such a fall-arrest device are also disclosed.

A safety gear system for an elevator has a main static mass, an auxiliary static mass and a dynamically changing mass, wherein the dynamically changing mass changes in accordance with the travel of the main static mass. The safety gear system includes at least one first safety gear which is configured to brake the auxiliary static mass by a constant braking force, and at least one second safety gear which is configured to brake the main static mass and the dynamically changing mass by an adjustable brake force which is adjustable in accordance with the change of the dynamically changing mass.

An elevator electrical safety actuation system and method are provided. The system includes an actuation device configured to operate a brake device. The actuation device includes a locking mechanism (542), a first portion (534) configured to be engaged and retained by the locking mechanism (542) in a first portion-first state and moveable to a second state wherein the first portion is not retained by the locking mechanism (542), a second portion (536) in contact with the first portion (534) when the second portion (536) is in a second portion-first state and the first portion (534) is in the first portion-first state, the second portion (536) moveable to a second portion-second state, wherein the second portion (536) is operably connected to the brake device, and a resetting mechanism (546) configured to force the first portion (534) from the first portion-second state to the first portion-first state.

According to an aspect, there is provided an elevator system comprising an elevator car configured to move in an elevator shaft; a main safety controller comprising a main safety output and a secondary safety output, wherein the main safety output is configured to control machinery brakes of the elevator car; and a secondary safety circuit connected to the secondary safety output and arranged in the elevator car and comprising at least one safety contact configured to control stopping means arranged in the elevator car; wherein when the at least one safety contact is triggered the secondary safety circuit is configured to control the stopping means to cause stopping of the elevator car.