| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 318364000 | Automatic and/or with time-delay means | 14 |
| 20090160375 | MOTOR CONTROLLER FOR RADIO CONTROL - Provided is a motor controller for controlling a motor installed at an object such as an electric car operated using a transmitter. A manipulation of a manipulation tool of the transmitter is allocated for brake and reverse modes. A specific value of brake power contained in a signal demodulated by a receiver is stored in a memory unit as a changeover reference value, and a changeover determining unit compares the changeover reference value with the brake power. If the brake power is greater than the changeover reference value, the changeover determining unit transmits a changeover signal to a control unit, and if the manipulation tool is manipulated to a neutral point after the control unit receives the changeover signal, the control unit changes the state of the manipulation tool from brake mode to reverse mode. The changeover reference value can be changed by an operator using an external device. | 06-25-2009 |
| 20130015790 | METHOD OF CONTROL IMPLEMENTED IN A VARIABLE SPEED DRIVE FOR CONTROLLING THE DECELERATION OF AN ELECTRIC MOTOR IN THE CASE OF POWER OUTAGEAANM KERMARREC; LudovicAACI EvreuxAACO FRAAGP KERMARREC; Ludovic Evreux FRAANM MALRAIT; FrancoisAACI Jouy sur EureAACO FRAAGP MALRAIT; Francois Jouy sur Eure FR - The invention relates to a method of control implemented in a variable speed drive for controlling the deceleration of an electric motor (M) in the case of electrical power outage. The method of control comprises:
| 01-17-2013 |
| 20160024835 | Direction Switchable Ratchet Device for Door Operator - A direction switchable ratchet device for a door operator is provided. The door operator includes an electric motor, an electromagnetic brake and the direction switchable ratchet device. The direction switchable ratchet device comprises a first and second direction restricting devices and a manually operable mechanism. A drive shaft of the electric motor is braked by a brake baffle disk when the electric motor is electrically de-energized and is released when the electric motor is electrically energized. The first and second direction restricting devices are provided to prevent the drive shaft from being rotated clockwise and counter-clockwise respectively by holding the brake baffle disk. In the event of power failure, the manually operable mechanism is effective to open the door once a pawl of the direction restricting device at the free side is retracted. The manually operable mechanism of the door operator is prevented from being incorrectly mounted in a cost-effective manner. | 01-28-2016 |
| 318365000 | Plural diverse conditions or with time delay | 2 |
| 20100301785 | Method and Apparatus for Electromagnetically Braking a Motor - An electromagnetic braking system and method is provided for selectively braking a motor using an electromagnetic brake having an electromagnet, a permanent magnet, a rotor assembly, and a brake pad. The brake assembly applies when the electromagnet is de-energized and releases when the electromagnet is energized. When applied the permanent magnet moves the brake pad into frictional engagement with a housing, and when released the electromagnet cancels the flux of the permanent magnet to allow a leaf spring to move the brake pad away from the housing. A controller has a DC/DC converter for converting a main bus voltage to a lower braking voltage based on certain parameters. The converter utilizes pulse-width modulation (PWM) to regulate the braking voltage. A calibrated gap is defined between the brake pad and permanent magnet when the brake assembly is released, and may be dynamically modified via the controller. | 12-02-2010 |
| 20140167658 | METHOD OF CONTROLLING AIR BLOWER OF FUEL CELL VEHICLE - A system and a method of controlling a blower of a vehicle. The method includes detecting, by a controller, a turning of a key to an off position of the vehicle. In addition, the controller is configured to detect whether a high voltage DC-DC converter and a high voltage battery are normally operated in response to detecting the turning of the key to an off position. Regenerative energy generated by a regenerative brake operation of the blower is transmitted by the controller through two different paths based on whether the high voltage DC-DC converter and the high voltage battery are normally operated. | 06-19-2014 |
| 318366000 | Condition of motor or driven device | 9 |
| 20090033256 | Powered opening and closing system for vehicle's door - A powered opening and closing system includes a door supported on a vehicle body, a motor, a drive mechanism for moving the door in opening and closing directions by virtue of power of the motor, an operation detecting sensor for detecting a handle operation when-the door is operated to open or close, and a control circuit for prohibiting the operation of the drive mechanism when a predetermined operation prohibiting condition is detected. The drive mechanism brakes the movement of the door by putting the clutch in an engaged state while the motor is kept stopped. While the predetermined operation prohibiting condition is detected, the control circuit controls the clutch to be engaged while keeping the motor stopped when an opening of the door is detected, and controls the clutch to be disengaged when an operation of the handle is detected by the operation detection sensor. | 02-05-2009 |
| 20140354197 | MOTOR CONTROLLER AND CONSTRUCTION MACHINE PROVIDED THEREWITH - There is obtained a configuration capable of rapidly decelerating a motor even if a failure occurs in the communication between a controller and a motor control unit in a motor controller in which a speed command is input from the controller to the motor control unit. A motor controller | 12-04-2014 |
| 318367000 | Armature or primary current | 1 |
| 20090243521 | METHODS AND APPARATUS TO REDUCE THE STOPPING TIME OF SPINDLE MOTORS - Methods and apparatus to reduce the stopping time of a spindle motor are disclosed. An example method includes detecting a dissipation current flowing in a spinning motor; determining when the dissipation current drops below a threshold value; and, in response to the dissipation current dropping below the threshold value, applying a voltage to the motor to increase the dissipation current for a duration. In some examples, the voltage is removed from the motor when the motor reaches a predetermined rotational velocity to avoid reverse rotation. | 10-01-2009 |
| 318368000 | Armature or primary circuit voltage or terminal or counter e.m.f. voltage | 2 |
| 20110187299 | FAN SYSTEM AND BRAKING CIRCUIT THEREOF - A fan system comprising a motor, a motor driving circuit and a control unit is disclosed. The motor driving circuit is coupled to the motor. The control unit is coupled to the motor driving circuit, generates a forward rotation command for controlling the motor to rotate in a predetermined direction when the control unit receives electrical power, and generates a backward rotation command for controlling the motor to rotate in a direction opposite to the predetermined direction when the control unit fails to receive the electrical power. | 08-04-2011 |
| 20120013277 | DAMPER SYSTEM FOR VEHICLE - A damper system for a vehicle including an electromagnetic damper, wherein the electromagnetic damper includes: (i) an electromagnetic motor; (ii) a motion converting mechanism; and (iii) an external circuit including (A) a first connection passage, (B) a second connection passage, (C) a first-connection-passage-current adjuster, and (D) a second-connection-passage-current adjuster, wherein the damper system comprises an external-circuit controller including: (a) a main-adjuster control portion configured to perform, on one of the first-connection-passage-current adjuster and the second-connection-passage-current adjuster that is designated as a main adjuster, a first control for mainly damping the relative vibration of the sprung portion and the unsprung portion; and (b) an auxiliary-adjuster control portion configured to perform, on one of the first-connection-passage-current adjuster and the second-connection-passage-current adjuster that is designated as an auxiliary adjuster, a second control for assisting the damping of the relative vibration of the sprung portion and the unsprung portion by the first control. | 01-19-2012 |
| 318369000 | Speed, acceleration, movement or position of motor or driven device | 4 |
| 20090230897 | Electric motor - An electric motor for a textile machine can be operated as a generator if the supply voltage fails. The electric motor comprises a rotor configured as the motor armature and a motor phase control circuit comprising a plurality of semiconductor components wherein the electric motor can be short-circuited if a predeterminable limit value is passed during generator operation. The motor circuit causes the short-circuiting on passing the limit value by activating one or more of the semiconductor components. The multi-phase electric motor is used as the single drive of a rotor of the textile machine. wherein the semiconductor components of the phase control bridge. on passing a predeterminable limit value, contactlessly short-circuit the electric motor to brake the electric motor. | 09-17-2009 |
| 20110227512 | SLEWING CONTROL DEVICE AND WORKING MACHINE INCORPORATED WITH THE SAME - There is provided a slewing control device that enables to detect breakdown of a driving system of a mechanical brake, and generate a torque for holding a slewing body in a stopped state to thereby prevent movement of the slewing body when an anomaly has occurred. In a working machine for driving a slewing body by an electric motor | 09-22-2011 |
| 20120153880 | SYSTEM FOR CONTROLLING THE SPEED OF AN ELECTRIC FAN - The system has a driving circuit for the motor of the electric fan, coupled to the electrical system of a motor vehicle and having a plurality of controlled electronic switches, and an electronic control unit arranged to control the driving circuit in such a way as to cause the flow in the motor of a variable average current capable of producing a required speed of rotation, in accordance with a predetermined relationship or function. The control unit is designed to store a predetermined threshold of rotation speed, and to control the motor through the associated driving circuit in such a way that when the rotational speed of the motor exceeds the threshold the driving circuit causes electrical braking of the motor. | 06-21-2012 |
| 20150097499 | THRUST REVERSER CONTROL SYSTEM - A control system for a thrust reverser with a movable cowl includes an electromechanical actuator to actuate the movable cowl, an electric drive unit (M) driving the actuator, and a power control unit capable of controlling the electric drive unit (M). The power control unit moves the movable cowl to a closed position and/or to a deployed position. In particular, the control system includes an electronic circuit for electric braking capable of braking the electric drive unit (M), in case of overspeed of the drive unit when the movable cowl is moved to the closed position and/or to the deployed position. | 04-09-2015 |
