Patent application number | Description | Published |
20100116595 | MANAGEMENT OF POWER SOURCE VARIATIONS IN AN ELEVATOR DRIVE SYSTEM | 05-13-2010 |
20100288586 | ELEVATOR MACHINE MOTOR AND DRIVE AND COOLING THEREOF - Heat in a drive system including a motor and a drive is removed using heat pipes in heat exchanging contact with the motor and the drive. The heat conducting element have at least one portion for receiving heat from the motor or the drive, and another portion to transfer heat to a heat exchange device that is spaced from the motor and drive. The heat conducting element may be a heat pipe or a heat spreader element. | 11-18-2010 |
20110073414 | ELEVATOR MOTION PROFILE CONTROL - An exemplary device for controlling an elevator car motion profile includes a controller ( | 03-31-2011 |
20110226557 | ELEVATOR MACHINE SUPPORT - An exemplary elevator system comprises a machine support ( | 09-22-2011 |
20110240407 | ELEVATOR SYSTEM INCLUDING CONTROL ELECTRONICS SUPPORTED ON AN ELEVATOR MACHINE SUPPORT - An exemplary mounting arrangement for components of an elevator system comprises a machine support that is configured to support a load associated with an elevator machine. A support for control electronics that operate the elevator machine is connected to the machine support. | 10-06-2011 |
20110296772 | ELEVATOR SYSTEM WITH GUIDE RAIL BRACKET - An exemplary door frame assembly that is useful in an elevator system includes a plurality of door frame members including a header, a sill and a plurality of jambs. The door frame members are configured to be secured into a desired position along a hoistway. At least one guide rail bracket is supported by at least one of the door frame members. The guide rail bracket is moveable relative to the door frame member between a handling position in which the guide rail bracket is generally parallel to at least one of the header or the sill and a deployed position in which the guide rail bracket is generally perpendicular to the at least one of the header or sill. | 12-08-2011 |
20110297488 | ELEVATOR SYSTEM DOOR FRAME THAT SUPPORTS GUIDE RAILS - An exemplary elevator door frame includes a sill member and a header member. A plurality of jamb members are generally perpendicular to the sill member and the header member. A plurality of guide rail brackets are supported on at least one of the sill member, the header member or one of the jamb members. The guide rail brackets are configured to receive a portion of a guide rail. | 12-08-2011 |
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 |
20120000729 | OVER-ACCELERATION AND OVER-SPEED DETECTION AND PROCESSING SYSTEM - An elevator system | 01-05-2012 |
20120000731 | ELEVATOR OVER-ACCELERATION AND OVER-SPEED PROTECTION SYSTEM - An elevator system | 01-05-2012 |
20120000732 | ELECTROMAGNETIC SAFETY TRIGGER - An electromagnetic safety trigger | 01-05-2012 |
20130112507 | ELEVATOR REGENERATIVE DRIVE CONTROL REFERENCED TO DC BUS - An exemplary elevator drive includes a DC bus. At least some power components in a power section are electrically referenced to the DC bus. At least some control components in a control section including a drive controller and associated inputs are electrically referenced to the DC bus. This eliminates any requirement for isolating the components referenced to the DC bus from each other. | 05-09-2013 |
20130119910 | ELEVATOR MOTOR POWER SUPPLY CONTROL - An exemplary power supply assembly includes a drive device having a bus capacitor. A switch associated with an input side of the drive device selectively connects the drive device to a power supply. An inductor has an impedance that limits an amount of current supplied to the bus capacitor during an initial charging of the bus capacitor when the switch connects the input side of the drive device to the power supply. A restrictive circuit portion dampens a resonance effect of the inductor. The restrictive circuit portion has a resistance that allows the bus capacitor to charge quickly. The impedance of the inductor has a more significant effect on how quickly the bus capacitor charges than an effect of the resistance. A dampening factor of the restrictive circuit controls a voltage of the bus capacitor during the charging of the bus capacitor. | 05-16-2013 |
20130119965 | REGULATED BOOTSTRAP POWER SUPPLY - An exemplary power supply includes a low side switch and a high side switch. A driver controls operation of the high side switch. A bootstrap capacitor supplies power to the driver. An energy storage portion is in parallel with the bootstrap capacitor to provide control over whether a voltage of the bootstrap capacitor drops below a desired voltage. A voltage regulator is in parallel with the bootstrap capacitor for limiting current provided to the bootstrap capacitor and for regulating a voltage of the bootstrap capacitor. | 05-16-2013 |
20130283907 | DEVICE AND METHOD FOR DETERMINING POSITION USING ACCELEROMETERS - An exemplary device for determining a position of a component moved by operation of a motor includes a rotating member that rotates responsive to operation of the motor. At least one accelerometer is supported on the rotating member. The accelerometer provides at least one of an indication of a tangential force that is tangential to a direction of rotation of the rotating member and a radial force that is perpendicular to the tangential force. A controller determines the position of the component based upon the force indication from the accelerometer. | 10-31-2013 |
20140014441 | Optics Based Sensor Device - A feedback system for a motor of an elevator system is provided. The feedback system may include a first sensor and a processing circuit. The first sensor may be disposed in proximity to a drive component of the elevator system and configured to detect a change in position of the drive component. The processing circuit may be configured to receive a first data signal from the first sensor corresponding to the change in position of the drive component and generate a feedback signal for controlling the motor based on the first data signal. | 01-16-2014 |
20140027210 | ELEVATOR DRIVE POWER SUPPLY CONTROL - An exemplary elevator control system includes an elevator drive. A safety chain is configured to monitor at least one condition of a selected elevator system component. A first switch is operable to interrupt power supply to the elevator drive. The first switch is controlled by the safety chain depending on the monitored condition. A second switch is in series with the first switch. The second switch is operable to interrupt power supply to the elevator drive. The second switch is controlled by the safety chain depending on the monitored condition. A monitoring device is configured to determine when the first and second switches should be in a power supplying condition for supplying power to the elevator drive. One such circumstance is when it is desirable to cause movement of the elevator car. The monitoring device determines that the first switch is in the power supplying condition for allowing the safety chain to control the second switch for supplying power to the elevator drive. The monitoring device determines whether the second switch is in a power supplying condition when the first switch is properly in the power supply condition. The monitoring device is configured to prevent the elevator drive from being powered whenever it determines that either the first switch or the second switch is not in a desired condition. | 01-30-2014 |
20140060980 | Brake for Electric Motor - A brake is provided. The brake may include a rotor having a plurality of magnets and a plurality of ferromagnetic poles radially disposed thereabout, and a stator having a plurality of shunts and a plurality of teeth radially disposed thereabout. At least one of the plurality of shunts and the plurality of teeth may be configured to selectively move between an engagement state and a free engagement state. The teeth may be configured to generate magnetic flux with the ferromagnetic poles so as to generate a braking torque during the engagement state. The shunts may be configured to redirect the magnetic flux therethrough and reduce the braking torque between the teeth and the ferromagnetic poles during the free engagement state. | 03-06-2014 |
20150063415 | CALIBRATION OF WEAR DETECTION SYSTEM - A method of wear detection of a coated belt or rope includes measuring an initial electrical resistance of one or more cords, strands or wires of the coated belt or rope. The initial electrical resistance is calibrated by repeating the measuring of initial electrical resistance and populating a database with the measured initial electrical resistance values. A true initial resistance is determined from the population of initial electrical resistances and subsequent measured values of electrical resistance of the one or more cords, strands or wires of the coated belt or rope. | 03-05-2015 |
20150083526 | Battery Mounting In Elevator Hoistway - A battery powered elevator system in which the battery and power electronics needed to connect the battery to the machine driving the elevator system are mounted in close proximity within the hoistway of the elevator system to minimize power transmission losses. | 03-26-2015 |