Patent ID: 7044271
Filing Date: 2006-05-16
Classification: B66B,E05F,E05Y

Abstract:
1. A safety mechanism for elevator systems having an elevator car, whose position in an elevator shaft can be changed, wherein plural entrances to the elevator shaft and to the elevator car each have at least one sliding door which is automatically operable by means of a drive mechanism, the safety mechanism comprising: at least one detector device provided at each sliding door to monitor a zone of at least one pinching edge between a sliding door and a door jamb, and/or between two adjoining sliding door panels of the sliding door which, depending on the state of the monitored zones, generates a door release signal, or interrupts the drive mechanism for opening the sliding door, wherein the signal from the detector device at one of plural elevator shaft sliding doors is received as a function of a position of the elevator car, the signal from the detector device of the elevator shaft sliding door which is considered is that of the elevator shaft sliding door which is to be automatically opened next with the sliding door of the elevator car, and the detector device at each sliding door of the elevator car and of the elevator shaft each have transmitting and/or receiving devices, which are pointed toward each other, whose transmitting and/or receiving areas overlap upon arrival and/or stop of the elevator car in front of the respective elevator shaft door.