Patent ID: 7980363
Filing Date: 2011-07-19
Classification: B66B

Abstract:
1. A method for implementing safety spaces in an elevator shaft, wherein an electric safety controller comprises means for measuring the total resistance of a series circuit, the method comprising: reading the number of landing doors open by means of detectors fitted in conjunction with the landing doors, reading the number of elevator car doors open by means of detectors fitted in conjunction with the elevator car doors, and reading the position of a mechanical safety device by means of detectors fitted in conjunction with the mechanical safety device; if it is established that number of landing doors open is greater than the number of elevator car doors open, then setting the safety system into a ‘person in shaft’ state and preventing operation of the elevator; and if it is established during the ‘person in shaft’ state of the safety system that the number of landing doors open is equal to the number of elevator car doors open and that the mechanical safety device has been set to a working position, then allowing maintenance operation.