Safety mechanism for reduced elevator pit

摘要

A mechanism is described, which activates the parachute in an elevator with reduced pit, when the distance between the bottom of the elevator car and the bottom of the pit decreases under a minimum safety value, wherein the operation of releasing and/or retracting said mechanism is made by a remote manual operation, performable from outside the elevator shaft. A simple and safe security device is thus obtained, which doesn't require further mechanisms except for those strictly necessary to verify safety conditions and to activate the parachute.