Patent application number | Description | Published |
20110303493 | BRAKE TORQUE CONTROL - An exemplary brake device includes a brake element configured to apply a braking force to resist rotation of an associated component. A mounting member is configured to mount the brake device to a stationary surface. The mounting member is at least partially moveable relative to the stationary surface responsive to a torque on the brake device. A sensor provides an indication of a force associated with any movement of the mounting member relative to the stationary surface responsive to the torque. | 12-15-2011 |
20120006969 | ELEVATOR MACHINE FRAME WITH NOISE REDUCING CONFIGURATION - An exemplary elevator machine frame includes a plurality of support surfaces configured to support at least one of a motor or a brake. A plurality of arms between the support surfaces maintain a desired alignment of support surfaces. At least one of the arms has a first cross section taken transverse to a longitudinal direction along a length of the arm at a first longitudinal location on the arm. That same arm has a second, different cross section at a second, different longitudinal location on the arm. | 01-12-2012 |
20120112577 | ELEVATOR MACHINE WITH EXTERNAL ROTOR AND MOTOR WITHIN TRACTION SHEAVE - A drive machine ( | 05-10-2012 |
20130327598 | ELEVATOR CAR MOVEMENT CONTROL IN A LANDING ZONE - An exemplary method is useful for controlling movement of an elevator car in an elevator system that includes a machine that selectively moves the elevator car and a machine brake that selectively resists movement of the elevator car. The method includes determining whether the elevator car is near a landing and determining whether a door of the elevator car is open. A desired operation includes desired movement of the elevator car while the elevator car is near the landing and the door is open. A determination is made whether the elevator car moves other than according to the desired movement. The machine brake is applied for stopping movement of the elevator car responsive to elevator car movement other than the desired movement while the elevator car is near the landing and the door is open. | 12-12-2013 |
20140069746 | Non-Linear Stiffness Roller Assembly - A roller apparatus is provided. The roller apparatus may include a bearing wheel configured to rotatably couple the roller apparatus to a roller shaft, and a resilient member radially disposed about the bearing wheel and configured to contact a guiderail at different magnitudes of loads. The resilient member may include a first section of a first diameter and a second section of a second diameter. The first section may be caused to deflect in response to loads within a first load range, while the second section may be caused to deflect in response to loads within a second load range. The resilient member may exhibit a stepwise increase in stiffness with a gradual increase in load. | 03-13-2014 |
20140238783 | Guide Rail for Elevator - A method of making a guide rail for an elevator system method comprising the steps of: providing a guide rail; applying a protective layer to the guide rail for corrosion protection; and removing at least a portion of the protective layer. A sheet metal guide rail for an elevator system comprises a base portion; and a blade portion extending from the base portion. The blade portion includes: a first section for engaging a guiding device and/or a safety of the elevator system; and a second section for engaging a guiding device and/or a safety of the elevator system. The second section contacts the first section. The sheet metal guide rail could be made using the aforementioned method. | 08-28-2014 |
20140311257 | Brake Torque Monitoring and Health Assessment - A method for monitoring brake torque of an elevator having a motor is provided. The method may engage an elevator brake for a predefined duration, determine a displacement of an output shaft of the motor during the predefined duration, and generate an alert if the displacement exceeds a predefined threshold. | 10-23-2014 |
20150136532 | TWO-PART SHEET METAL ELEVATOR GUIDERAIL - An exemplary elevator guiderail includes a metal sheet bent into a configuration that establishes at least one mounting portion configured to facilitate mounting the guiderail within an elevator hoistway. At least one guiding portion is configured to guide movement of an elevator car along the guiderail. The metal sheet includes an exterior surface treated to resist corrosion. A cover over at least some of the guiding surface has an exterior that is different than the exterior surface of the metal sheet. The cover is configured to establish a coefficient of friction to facilitate brake engagement with the cover for resisting movement of an elevator car along the guiderail. | 05-21-2015 |