Class / Patent application number | Description | Number of patent applications / Date published |
187287000 | Includes safety cut off switch actuated by load support speed sensor or governor | 8 |
20090288920 | UNINTENDED MOVEMENT GOVERNOR - The invention relates to an electronic unintended movement governor, which comprises an input for car position data, means for determining the speed of the elevator car, a plurality of limit values for permitted movement of the elevator car, such as the limit value of the maximum permitted speed of the elevator car, and which unintended movement governor also comprises overspeed monitoring for controlling at least one stopping appliance of the elevator car when the speed of the elevator car exceeds the limit value of the maximum permitted speed. The unintended movement governor comprises at least two separate controls for controlling a stopping appliance of the elevator car. Additionally, the invention relates to a method for controlling the aforementioned electronic unintended movement governor. | 11-26-2009 |
20090314586 | ELEVATOR SPEED GOVERNOR AND ELEVATOR DEVICE - An elevator governor capable of setting first overspeeds different between a rising time and a descending time by a simple configuration and at a low cost without the need for electric power supply from the outside. For this purpose, a weight that is moved in a predetermined direction by receiving a centrifugal force according to a travel speed at the rising time and the descending time of a car, an elastic body urged by movement of the weight having received the centrifugal force, and an actuating device actuates a stop switch when the weight having received the centrifugal force moves to a predetermined position against an urging force of the elastic body are provided, and also a switching device driven by the rising/descending operation of the car is provided. By the switching device, the length of the elastic body at the time when the actuating devices actuates the stop switch is switched to a length different according to the rising/descending direction of the car. | 12-24-2009 |
20110036667 | ELEVATOR APPARATUS AND OPERATING METHOD THEREOF - An elevator apparatus includes a safety circuit section including a plurality of abnormality detection means, a safety control device, failure detection means, and circuit changeover means. The safety control device controls electric power supply to a driving device and a brake device in accordance with a content of an abnormality detected by the abnormality detection means. The failure detection means detects a failure of the safety control device. When the failure of the safety control device is detected, the circuit changeover means forms a failure-time circuit in which the electric power supply to the driving device and the brake device is interrupted directly by the abnormality detection means. | 02-17-2011 |
20120000729 | OVER-ACCELERATION AND OVER-SPEED DETECTION AND PROCESSING SYSTEM - An elevator system | 01-05-2012 |
20120193171 | MEASURING ARRANGEMENT, MONITORING ARRANGEMENT, AND ELEVATOR SYSTEM - The invention relates to a measuring arrangement, an elevator system and also a monitoring arrangement for measuring the movement of an elevator car. The measuring arrangement includes identifiers disposed at set points in the elevator hoistway, each of which identifiers contains at least one property to be measured, which property to be measured is made to be variable in the direction of movement of the elevator car. The measuring arrangement includes at least one measuring apparatus, fitted in connection with the elevator car and arranged to move along with the elevator car in the elevator hoistway. The measuring apparatus is arranged to separately read the property to be measured of each aforementioned identifier after the measuring apparatus has moved in the elevator hoistway to the reading point individual for the identifier to be read. | 08-02-2012 |
20120312638 | ACTUATOR FOR A SPEED GOVERNOR OF AN ELEVATOR SYSTEM - An actuator for a speed governor of an elevator system includes a governor wheel equipped with at least two flyweights. The governor wheel can be driven by a governor cable looped around it. An actuator wheel is stationary in a basic position. A coupler engages the actuator wheel when the governor wheel attains an actuation speed and thus couples with the governor wheel so that the actuator wheel is caused to rotate. An elastic material, preferably transmitting a high degree of friction, is provided between the coupler and the actuator wheel. The actuator wheel has a lining or tyre of the elastic material and/or the coupler is equipped with the elastic material. | 12-13-2012 |
20130306409 | ELEVATOR GOVERNOR HAVING TWO TRIPPING MECHANISMS ON SEPARATE SHEAVES - An exemplary elevator system includes an elevator car. A first governor sheave is supported on the elevator car for movement with the elevator car. The first governor sheave is supported for rotational movement relative to the elevator car responsive to movement of the elevator car. A first governor tripping mechanism is supported on the first governor sheave. The first governor tripping mechanism provides an indication to perform a first governor function for controlling the speed of the elevator car responsive to the elevator car moving at a speed above a first threshold speed. A second governor sheave is supported on the elevator car for movement with the elevator car and for rotational movement relative to the elevator car responsive to movement of the elevator car. A second governor tripping mechanism is supported on the second governor sheave. The second governor tripping mechanism provides an indication to perform a second governor function for controlling a speed of the elevator car responsive to the elevator car moving at a speed above a second threshold speed. | 11-21-2013 |
20150014100 | ELEVATOR GOVERNOR AND ELEVATOR DEVICE - An elevator governor to actuate an emergency stop device when a car descends, with a door kept open, includes: a pendulum which moves to a radially outer side of a sheave based on rotational speed of the sheave; a rope constraining mechanism which constrains a governor rope when the pendulum has moved when the car is descending; a protruding body provided in the pendulum; a cam, controlled by a cam moving mechanism, configured to move between a protruding position to contact the protruding body and a retracted position to not contact the protruding body, when the car door is open. A cam surface, when the cam is in the protruding position, moves the pendulum to the radially outer side of the sheave over a moving distance, and the cam moving mechanism moves the cam to the protruding position in the process of movement of the cam. | 01-15-2015 |