| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 187305000 | Actuated by load support speed sensor or governor | 9 |
| 20090101450 | Elevator apparatus that detects an accurate running speed of an elevator car that operates over speed - In an elevator apparatus, a car ascends and descends based on a running speed pattern generated by a control panel. Destination floor buttons and landing buttons are connected to an over speed monitoring portion without the intervention of the control panel. The over speed monitoring portion has an over speed setting portion for setting first and second over speeds based on car position information obtained from a car position detector and call registration information obtained from the destination floor buttons and the landing buttons. In the over speed setting portion, a running speed pattern different from the running speed pattern generated by the control panel is independently generated without depending on information from the control panel. The first and second over speeds are set based on the running speed pattern generated by the over speed setting portion. | 04-23-2009 |
| 20100032246 | FAIL-SAFE POWER CONTROL APPARATUS - The invention relates to a fail-safe power control apparatus ( | 02-11-2010 |
| 20110240412 | ELEVATOR BRAKING CONTROL - An exemplary elevator system includes an elevator car. A ( | 10-06-2011 |
| 20110272217 | ELEVATOR GOVERNOR - Provided is an elevator governor capable of achieving, with a simple configuration, an overspeed detection mechanism to which rotation dependence is added while preventing a decrease in reliability due to the generation of vibrations and noises and the wear of parts. For this purpose, the elevator governor includes: a sheave on which a rope moving in response to the movement of an ascending and descending body of an elevator is wound, and which changes the rotation speed in one direction in response to the ascent speed of the ascending and descending body and changes the rotation speed in the other direction in response to the descent speed of the ascending and descending body; a fly-weight which is provided in the sheave and increases and decreases an outward moving quantity in response to an increase and decrease in the rotation speed of the sheave; a detector which is provided in proximity to the fly-weight and performs overspeed detection of the sheave when the fly-weight has moved outward by a predetermined quantity; and a stopper which is provided in proximity to the fly-weight and prevents the fly-weight from moving outward more than or equal to the predetermined quantity while the sheave is rotating in a predetermined direction which is either of the two rotation directions. | 11-10-2011 |
| 20120000731 | ELEVATOR OVER-ACCELERATION AND OVER-SPEED PROTECTION SYSTEM - An elevator system | 01-05-2012 |
| 20120103732 | Elevator Governor System - A governor system for an elevator is disclosed. The governor includes a shaft horizontally extending from a sheave of the governor system. A base, spring, and slider are mounted on the shaft with linkages extending from the base of the sheave to at least one flyweight. The spring and flyweights are sized such that centrifugal force will be sufficient to overcome the biasing force of the spring upon the sheave reaching a certain rotational speed. Overspeed sensors and mechanical switches are positioned proximate the flyweights and flyweights plates such that upon such motion of the flyweights, the governor system is triggered, thereby slowing and ultimately stopping the elevator. The governor system has a greatly reduced space requirement compared to previous governors, as well as a reduced likelihood of false trips due to acceleration or deceleration of the car. | 05-03-2012 |
| 20130015021 | ADJUSTMENT DEVICE AND AN ELECTRIC DEVICE OF AN ELEVATOR - An adjustment device for controlling the electric drive of an elevator in connection with a voltage reduction of the supplying network is disclosed. The electric drive of an elevator includes an electric motor and a power supply apparatus of for adjusting the supply voltage of the electric motor. The adjustment device includes a device configured to control the power supply apparatus and also a speed regulator for adjusting the speed of the electric motor. The adjustment device is arranged to determine the output voltage of the power supply apparatus of the electric motor in relation to the permitted maximum value of the output voltage, and the adjustment device is arranged to interrupt the operation of the speed regulator but to continue the operation of the power supply apparatus of the electric motor when the output voltage of the power supply apparatus of the electric motor reaches the permitted maximum value. | 01-17-2013 |
| 20140367206 | System and Method for Reducing Speed of An Elevator - A system and method for controlling speed of an elevator car in an elevator system is disclosed. The elevator car may have a speed governor adapted to trip when an electrical tripping point of the speed governor is reached. The elevator system may also have a control system for controlling operation of the elevator car, the control system providing a speed reducing switch adapted to trip when a software tripping point of the speed reducing switch is reached, the software tripping point being reached before the electrical tripping point of the speed governor. | 12-18-2014 |
| 20150101890 | Encoder Eccentricity Correction For Elevator Systems - An encoder assembly is disclosed. The encoder assembly comprises a motor having a rotor, and an encoder. The encoder comprises an encoder wheel axially coupled to the rotor, a first sensor configured to detect a first velocity at which a portion of the encoder wheel moves relative to the first sensor, and a second sensor configured to detect a second velocity at which a portion of the encoder wheel moves relative to the second sensor, the first sensor and the second sensor positioned approximately 180 degrees apart from each other about an axis of rotation of the rotor. | 04-16-2015 |
