Patent ID: 7775330
Filing Date: 2010-08-17
Classification: B66B

Abstract:
1. An electronic unintended movement governor for an elevator system that includes an elevator car, a mechanical overspeed governor and at least one mechanical overspeed governor controlled stopping appliance, comprising: an input for elevator car position data; a device that determines the speed of the elevator car; a plurality of limit values for permitted movement of the elevator car, including a limit value of the maximum permitted speed of the elevator car; wherein the limit values for the permitted movement of the elevator car comprise a limit value for the distance traveled by the elevator car as well as a time delay, and the electronic unintended movement governor further comprises a device that determines the distance traveled by the elevator car, a timer, and at least two separate controls that control a stopping appliance of the elevator car, said at least two separate controls comprising: and wherein the control of the stopping appliance of the elevator car comprises a control of a machinery brake as well as a disconnection of a power input circuit of an elevator car drive motor.