Class / Patent application number | Description | Number of patent applications / Date published |
318009000 | Power- or motion-transmitting mechanism | 40 |
20080238346 | Substrate Splitting Apparatus and a Method for Splitting a Substrate - A substrate splitting apparatus and a method for splitting a substrate using the substrate splitting apparatus are provided. The substrate splitting apparatus includes a servo motor, a transmission device, a substrate breaking bar, and a stage. One end of the transmission is directly or indirectly coupled to the servo motor while the other end is coupled with the breaking bar. The stage has a load-lock surface and the load-lock surface faces the breaking bar. The servo motor drives the transmission device to move the breaking bar toward the load-lock surface. A substrate with a pre-crack on the bottom is disposed on the load-lock surface. The servo motor drives the substrate breaking bar to move towards or away from the pre-crack. The method of splitting includes the following steps: forming a pre-crack on the substrate; controlling the servo motor to drive the breaking bar to move towards the substrate; and controlling the breaking bar to press the substrate at the pre-crack. | 10-02-2008 |
20100066274 | SWITCH ELEMENT FOR A MOVABLE FURNITURE PART - The invention relates to a switch element comprising an actuating element that can be impinged upon by an energy accumulator and is mounted so that it can be moved along a trajectory. At least two energy accumulators are used to impinge the actuating element and the number of the energy accumulators impinging the actuating element varies in predetermined positions of the trajectory. | 03-18-2010 |
20120153875 | CONTROLLABLE TRANSVERSE ROTATION ADAPTOR - Torsional loads can impart painful and potentially injurious shear stresses upon residual limb soft tissues in lower limb amputees. To protect the soft tissues, a controllable transverse rotation adapter (TRA) has been developed that permits rotation of the prosthetic socket relative to the prosthetic foot, relieving some of the rotational loads experienced by the residual limb, and controlling either the stiffness resisting the transverse rotational torque, or the torque. This TRA uses series elastic actuator (SEA) technology and includes a prime mover, a speed reduction device, and a torsion spring mounted in series. By measuring a displacement of the spring (e.g., using a strain gauge), motor current, and the motor shaft position, the load torque and position can be used to calculate actual stiffness or applied torque. The motor position is then adjusted relative to the load, to control the effective stiffness or torque. | 06-21-2012 |
20140055059 | MOTOR DRIVING DEVICE AND ELECTRIC POWER STEERING APPARATUS INCLUDING MOTOR DRIVING DEVICE - In a motor driving device, a first relay portion is connected between a power source and an inverter portion, a second relay portion is connected between the first relay portion and the inverter portion, and a motor relay portion is connected between the inverter portion and a winding group of a motor. Inverter pre-driver circuits respectively drive switching elements of the inverter portion. A first pre-driver circuit drives the first relay portion. A second pre-driver circuit drives the second relay portion and the motor relay portion. A controller controls driving of the inverter portion, the first relay portion, the second relay portion, and the motor relay portion, and detects a failure of the first relay portion, the second relay portion, and the motor relay portion. | 02-27-2014 |
20140117883 | Active Suspension System - An active suspension system for a suspended device. The system has an electromagnetic actuator that produces force on the suspended device and that is powered by a power source, and a control system that provides control signals that cause the electromagnetic actuator to exert force on the suspended device. The control system is adapted to receive a turn-off signal that results in disabling the electromagnetic actuator from producing force on the suspended device. When the control system receives a turn-off signal it provides actuator turn-off control signals that cause the force exerted by the electromagnetic actuator to progressively transition to zero over a transition time period. | 05-01-2014 |
20140117884 | ELECTRIC POWER STEERING SYSTEM - An electric power steering system includes: an electric motor that generates assist torque based on steering torque; an auxiliary power supply connected in series with a main power supply that supplies electric power to the electric motor, and capable of discharging electric power to the electric motor; and a control device that controls a voltage to be applied to the electric motor. When the auxiliary power supply starts discharging electric power to the electric motor, the control device gradually increases a duty ratio of a switching element, which is a command signal for commanding the auxiliary power supply to discharge electric power. | 05-01-2014 |
20140159617 | Method and Apparatus for Adapting Commutation for an Electronically Commutated Electrical Machine - A method for controlling a position of an actuating element, to which a restoring force is applied, in an actuator system having an electronically commutated electrical machine, includes controlling the position of the actuating element as a function of a predefined setpoint position specification and an actual position specification. A position control unit provides an actuating variable which is associated with a space vector with which a stator arrangement of the electrical machine can be driven. The method further includes applying a correction variable to the space vector in order to correct a space vector angle of the space vector; providing an auxiliary signal; varying the space vector angle of the space vector, which is defined by the actuating variable, by the auxiliary signal; and integrating a variable to give an integration value. | 06-12-2014 |
20140191690 | CONSTRUCTION MACHINE AND METHOD OF CONTROLLING TURNING ELECTRIC MOTOR - A construction machine includes a turning electric motor configured to drive a turning mechanism configured to cause an upper-part turning body to turn relative to a lower-part traveling body and a control unit configured to control driving of the turning electric motor. The control unit is configured to cause the output of the turning electric motor to continue after the turning speed of the upper-part turning body becomes zero, based on the magnitude of the output or the direction of the output of the turning electric motor at the time when the upper-part turning body is decelerated and its turning speed becomes zero. | 07-10-2014 |
20140361713 | PULSE WIDTH MODULATION CONTROL OF SOLENOID MOTOR - A drive mechanism configured to drive a thermally isolated actuator between two positions. The drive mechanism includes a rotary actuated motor configured to rotatably drive a motor member, and a drive member coupled to the motor member and having a drive arm configured to responsively move from a first position to a second position upon rotation of the motor member. An actuator is responsive to movement of the drive arm moved from the first position to the second position. A drive circuit is configured to generate a pulse width modulated (PWM) drive signal configured to controllably drive the motor, the PWM drive signal having a first duty cycle configured to advance the drive arm from the first position, and having a second duty cycle different than the first duty cycle as the drive arm approaches the second position. The drive signal may be removed before the drive arm engages a hard stop. The drive mechanism may comprise at least one sensor configured to determine a position of the drive arm proximate the first position and proximate the second position. The actuator is thermally isolated from the drive arm in both the first position and the second position. | 12-11-2014 |
318010000 | Reversible drive mechanism | 4 |
20080197792 | Door opener error-start prevention device - The present invention provides a door opener error-start prevention device, in which the output shaft of the door opener is formed as a hollow accommodation portion in the center, and a pair of axial sliding slots being formed from the periphery to pass through the accommodation portion, and a sliding pin being radialy inserted; a pair of elastic elements, abutting against the sliding pin from both ends of the accommodation portion, the outer end of each elastic element being fixed by a bolt; a sprocket assembly being rotationally invaginated on the output shaft, one end having a sprocket for driving the reel of the door, the other end being formed, on its periphery, with a pair of V-shaped slots which corresponds to the sliding slot on the output shaft, both ends of the sliding pin being engaged in the V-shaped slot to drive the sprocket assembly. Thus, in the happening of error-start and jamming of the door with the latch device, the process can be selected in such a manner that the door can actively return to the original position by the actuation of an obstacle sensing device from sliding pin, and the sensitivity for sensing the obstacle of the sliding pin can be adjusted by a bolt provided at the outside of the output shaft without the need to disassemble the door opener. | 08-21-2008 |
20130020968 | ELECTROMECHANICAL POWER TRANSMISSION SYSTEM AND METHOD - Embodiments of the invention provide an electromechanical power transmission system that includes a drive system operatively coupled to a power take-off unit. In some embodiments the power take-off unit comprises an output shaft, an input shaft, at least one gear assembly and at least one clutch assembly. The electromechanical power transmission system can comprise at least one electric machine module where the electric machine module comprises a rotor assembly and stator assembly that can be operatively coupled to the output shaft and clutch assembly. The electric machine module can be configured and arranged to be capable of being reversibly operated to provide voltage and current or rotational torque and mechanical energy as a function of shaft rotational direction. In some embodiments an electronic control unit may modify the rotational speed of the rotor assembly so as to produce a synchronous velocity relative to the expected rotational speed of the shaft. | 01-24-2013 |
20130207573 | SYNCHRONOUS CONTROL APPARATUS FOR SPEED-REDUCING DC MOTOR - The present invention relates to a synchronous control apparatus for speed-reducing DC motor, comprising a speed-reducing DC motor and a controller, wherein said speed-reducing DC motor comprises a motor and a speed reducer. Said speed-reducing motor is equipped with a speed detecting module to detect the actual rotational speed. Said controller is equipped with a storage unit to save reference rotational speed values. Said speed detecting module is linked to the controller which can vary the supply voltage to the speed-reducing DC motor while the actual rotational speed differs from the reference speed value. | 08-15-2013 |
20190149069 | PLUG AND PLAY UNIVERSAL INPUT ACTUATOR | 05-16-2019 |
318011000 | Variable speed mechanism | 5 |
20080265804 | Speed Control of a Variable Speed Motorized System - The present invention provides apparatuses, computer media, and methods for controlling the speed and direction of a controlled device. An input device provides input information, which is converted into speed information and direction information. A controlled device, e.g., a variable speed motor, is then instructed to operate at a device speed and direction in accordance with the speed information and direction information. The remote device may include a circular input device through which a user draws strokes. The remote device instructs the controlled device to operate at a device speed and a direction in accordance with extracted characteristics of the entered stroke such as the speed of drawing the stroke and the direction of the stroke. The remote device then transmits a signal with speed and direction information to control the controlled device. | 10-30-2008 |
318012000 | Gearing | 4 |
20090121659 | Charge control apparatus, electrically powered vehicle and electric storage charge control method - When it is determined that an electric storage is to be charged from a commercial power source, a controller sets a control target of a voltage of a power line to be controlled by a boost converter, based on a voltage of the commercial power source. Specifically, the controller sets the control target of the voltage to a level approximately equal to the crest value of voltage. Then, the controller outputs an input permission command to a relay circuit, and controls inverters to execute charging of the electric storage. | 05-14-2009 |
20090160371 | Electric power tool - An electric power tool includes a motor, a reduction mechanism, a driving unit, a bearing unit, a housing, a speed changing unit, a power switch, and an operation detecting unit which detects a reduction ratio changing operation performed by the speed changing unit to control electric power supplied to the motor. The reduction mechanism transfers the rotating power of the motor, and the driving unit transfers the rotating power of the reduction mechanism to a tip end tool. The bearing unit rotatably supports the driving unit, and the housing accommodates the motor, the reduction mechanism, the driving unit and the bearing unit. The speed changing unit changes a reduction ratio of the reduction mechanism, a power switch for turning on and off a power source of the motor. | 06-25-2009 |
20150035456 | DRIVE SYSTEM FOR A VEHICLE TRAILER MANEUVERING DRIVE - Disclosed are drive systems for a vehicle trailer maneuvering drives, some embodiments having a motor unit and a voltage source for supplying the motor unit, wherein the motor unit comprises a brushed electric motor with motor shaft and a motor controller that may include a speed detection unit for detecting the speed of the motor shaft and a control and regulating unit for the motor, for its voltage supply. | 02-05-2015 |
318013000 | Differential type | 1 |
20160006378 | ELECTRIC DRIVE SYSTEM - This invention concerns an electric drive system ( | 01-07-2016 |
318014000 | Motion-converting mechanism | 13 |
20080246421 | Actuator Arrangement - An actuator arrangement comprises a plurality of linearly extendable actuators arranged to be driven by a common electrically driven motor, each actuator, being provided with limit stops to limit extension and/or retraction thereof, wherein the limit stops of the actuators are positioned such that a first one of the actuators has a smaller range of permitted extension than at least a second one of the actuators. | 10-09-2008 |
20080284358 | Controller for Electromechanical Braking System with Power Demand Control and Method - A system and method for limiting peak power demand of a controller ( | 11-20-2008 |
20090021190 | Closure panel control apparatus - In a closure panel control apparatus, an ECU controls a rotational speed of an electric motor, which provides a drive force to drive a closure panel in an opening movement and a closing movement thereof. The ECU obtains a vehicle speed measured with a vehicle speed sensor and receives a command signal from a switch, which is operable by an occupant of a vehicle to command the opening movement or the closing movement of the closure panel. The ECU controls the rotational speed of the electric motor based on the measured vehicle speed that is obtained at the time of receiving the command signal from the switch. | 01-22-2009 |
20090167214 | ELECTRICAL ACTUATOR - An electric actuator includes a motion conversion mechanism and a position detector. The motion conversion mechanism converts rotation of a rotary shaft of a motor into linear motion of an output shaft. The position detector detects a permanent magnet M, which moves integrally with the output shaft. A motor control portion controls the motor based on commands from a host command unit. A control program for controlling the motor includes, as control modes, six fluid pressure cylinder modes, according to which the motor is controlled. Specifically, each of the control modes corresponds to one of the cases where the fluid pressure cylinder is controlled by three solenoid valves, or a two-position single solenoid valve, a two-position double solenoid valve, and a three-position double solenoid valve. The motor is controlled according to the selected control mode. | 07-02-2009 |
20100090623 | Electric motor drive system with bi-directional input and constant directional output - The present invention discloses a system having a particular electric motor being able to do bi-directional rotational input having its output ends for providing output to the input ends of the constant directional output transmission device, while the constant rotational directional output is used to drive the loading wheel train via the output end of the constant directional output transmission device, wherein the user can operatively control the rotational direction of driving inputs, thereby the constant rotational output of different speed change ratio in different directions of driving inputs can be made via the constant directional output transmission device of different speed change ratios. | 04-15-2010 |
20110193500 | MECHANISM FOR CONVERTING ROTARY MOTION INTO LINEAR MOTION AND LIFTING DEVICE - There is provided a mechanism for converting rotary motion into linear motion in which high positioning accuracy can be obtained in mutual conversion between rotary motion and linear motion. The mechanism includes a plurality of rollers having a roller annular groove member and a pair of thrust bearings, a thrust bearing portion that is convex shaped and is held between the pair of thrust bearings on an outer surface of an end of the roller shaft, a step surface that is disposed on an inner surface of the roller annular groove member and facing to the thrust bearing portion putting one of the pair of thrust bearing in between, a thrust facing member that is in mesh with an inner surface of the roller annular groove member and is facing to the thrust bearing portion putting the other one of the pair of thrust bearing in between. | 08-11-2011 |
20110298399 | DAMPER SYSTEM FOR VEHICLE - A vehicle damper including an electromagnetic damper configured to generate a damping force with respect to a motion of a sprung portion and an unsprung portion toward each other and a motion thereof away from each other and includes: an electromagnetic motor; a motion converting mechanism; and an external circuit which is disposed outside the electromagnetic motor and including a first connection passage and a second connection passage and which includes a battery-device connection circuit for connecting the motor and a battery device and a battery-device-connection-circuit-current adjuster configured to adjust an electric current that flows in the battery-device connection circuit, wherein the damper system further includes an external-circuit controller configured to control an electric current that flows in the electromagnetic motor by controlling the external circuit and configured to control a flow of an electric current between the battery device and the electromagnetic motor by controlling the battery-device-connection-circuit-current adjuster. | 12-08-2011 |
20130009572 | APPARATUS FOR CONTROLLING SPEED IN INDUCTION MOTOR - Provided is an apparatus for controlling speed in induction motor in which tension command and friction loss compensation are used to calculate a torque limit relative to an output of a speed controller, which is then used to limit the speed of the induction motor, whereby a tension sensor and a position sensor are not used in the continuous processing line to improve performance of the vector control type induction motor. | 01-10-2013 |
20130076272 | Energy conversion apparatus - Apparatus for controlling an electromagnetic engine. The apparatus includes a signal generator, such as a device that plays a pre-recorded signal. The output of the signal generator is connected to an amplifier that is connected to one or more coils. The coils are positioned around a cylindrical cavity or sleeve in which a permanent magnet piston reciprocates in response to the amplified signal applied to the coils. The signal includes a plurality of snippets that forms a half-wave signal. The signal has an initial or starting portion and a steady state portion. The starting portion of the signal comprises a series of the snippets at selected intervals. The steady state portion comprises a series of the snippets that are repeated and alternatingly inverted to simulate a sine wave or other waveform. | 03-28-2013 |
20140139148 | MOTOR CONTROL DEVICE - A motor control device is provided which controls a motor by performing switching between forward rotation and reverse rotation so as to cause an object to be controlled to reciprocate, the motor control device including a lead angle map storage unit configured to store a lead angle map in which a motor rotation speed and a lead angle to be set are associated for each of the forward rotation and the reverse rotation, a target rotation speed-setting unit configured to set a target rotation speed of the motor based on an input signal from outside, a lead angle-setting unit configured to obtain the lead angle associated with the set target rotation speed by referring to the lead angle map and set the lead angle as a lead angle of the motor, and a driving control unit configured to control rotation of the motor so as to achieve the set target rotation speed and the set lead angle. | 05-22-2014 |
20140184107 | SWITCH DRIVING CIRCUIT, INVERTER APPARATUS AND POWER STEERING APPARATUS - A switch driving circuit electrically opens and closes a switch circuit including two N-channel type semiconductor switching elements series connected in a reverse direction, thereby electrically opening and closing a path between a DC power supply and an inverter circuit. The switch driving circuit has a reference potential point in common with the inverter circuit and supplies an opening/closing control signal to the switch circuit. The switch driving circuit includes a half bridge circuit including two semiconductor switching elements series connected between a driving power supply and the reference potential point. Two protection diodes are connected in parallel to the semiconductor switching elements respectively. At least one current blocking diode is configured to block current from flowing from the reference potential point through the diode to the switching circuit side when the DC power supply is connected to the inverter circuit in reverse polarity. | 07-03-2014 |
20150372633 | POWER TOOL - A hammer drill ( | 12-24-2015 |
20160190965 | IMPACT ROTATION TOOL - An impact rotation tool includes a motor, a switching element that performs a switching operation based on a PWM control signal, and a controller that performs PWM control on the motor with the switching operation of the switching element. The controller includes a PWM control unit that generates the PWM control signal, an impact detector that detects whether or not an impact has been generated, and a control frequency switch unit that selects a control frequency of the PWM control signal from a first control frequency, which is in an audible range, and a second control frequency, which is higher than the frequency in the audible range. The controller outputs a PWM control signal having the second frequency when detecting that an impact has not been generated and outputs a PWM control signal having the first frequency when detecting that an impact has been generated. | 06-30-2016 |
318015000 | Mechanical gearing | 9 |
20080203949 | CONTROLLING TORSIONAL SHAFT OSCILLATION - Torsional oscillation of a shaft in a swing drive system of an excavator is minimized by monitoring torsional strain of the shaft. An electric motor provides torque to the shaft in response to a drive signal provided by a converter. A compensation circuit produces a compensation signal as a function of torsional strain of the shaft. A field excitation circuit or regulator powers a converter as a function of the compensation signal such that a counter torque is provided to the shaft and torsional oscillation of the shaft is reduced. | 08-28-2008 |
20080211433 | Vehicle Driving System - To provide a four-wheel driving system capable of obtaining a rotating speed very accurately and improving motor controllability. | 09-04-2008 |
20090206777 | HIGH TORQUE MOVABLE BARRIER ACTUATION AT LOW SPEEDS UTILIZING A HUB MOTOR - The present invention is a system for high torque operation of a movable barrier utilizing a compact hub motor device, which may be directly coupled to a movable barrier without the use of additional gearing systems. The flat geometry provides high dynamic acceleration with short electrical and mechanical time constants, and its planetary gearing system implemented within the device allows for compact, more efficient access systems. Eliminating a gear system in accordance with the present invention lowers maintenance requirements, increases efficiency, and streamlines operation of movable barriers. | 08-20-2009 |
20090251080 | DC MOTOR WITH DIRECTIONALLY DETERMINED TORQUE - A device and method for matching the rates of speed at which an electric motor that is drivingly connected to a worm gear raises and lowers a window in an automobile power window assembly. By axially displacing the motor's armature, and/or by varying the thread and tooth profiles of the worm and the gear, the amount of torque produced by the motor and transmitted through the worm gear can be altered. In order to compensate for the effect of gravity on the motor load and on the window's speed of ascent and descent, more torque is provided when the window is being raised and less torque is provided when the window is being lowered. | 10-08-2009 |
20110187295 | ELECTRONIC APPARATUS - An electronic apparatus includes a main body, a cover, a driving device, a receiving unit, and a processing unit. The cover is pivotably connected to the main body. The driving device drives the cover to rotate relative to the main body between an open position and a closed position. The receiving unit receives a control signal from an input device. The processing unit directs the driving device to rotate the cover relative to the main body between the open position and the closed position according to the control signal. | 08-04-2011 |
20130147403 | Electro-Mechanical Drive with Extended Constant Power Speed Range - Embodiments of the invention comprise a multi-input range box driven by multiple electric drives. Range shifting involves momentarily increasing the current through all but a given motor, to a level that will carry the entire load, comprising specified constant power. Simultaneously, torque of the given motor is reduced to zero. The given motor is then disconnected from supplying power, is synchronized to the input speed of the new speed range, and is then engaged for the new range. The above sequence is then repeated for each remaining motors, in turn. The motor current is re-equalized for all of the motors, after all the motors have been connected to provide power at the new range. Thus, there is no interruption in power flow during a range shift, and the motors are always used to deliver power, rather than to serve as a brake. | 06-13-2013 |
20130257316 | ROTARY ENCODERS FOR USE WITH TROLLING MOTORS - Rotary encoders for use with trolling motors are disclosed. An example rotary encoder includes a housing defining an aperture and a linear guide and an input sleeve to extend through the aperture. The input sleeve includes an exterior guide to be engaged and followed by a shuttle to enable rotary position information to be obtained from the input sleeve. The shuttle is movably coupled within the linear guide. The shuttle is biased to engage a central portion of the exterior guide if rotation of the input sleeve moves the shuttle past first or second ends of the groove to prevent the rotary encoder from being damaged by over-rotation of the input sleeve. | 10-03-2013 |
20140062345 | ACTUATING APPARATUS - An actuating apparatus includes a first pulley to which a rotational power of a motor is transmitted, a second pulley to which a rotational power of the first pulley is transmitted through a wire, displacement encoders for detecting respective rotational angles of the first pulley and the second pulley, a slip amount calculator for calculating a slip amount of the second pulley with respect to the wire, and a motor controller for controlling a torque output from the motor based on the slip amount. The slip amount calculator calculates the slip amount based on a change in a rotational angular velocity of the first pulley, a difference between the rotational angles of the first pulley and the second pulley, and the torque output from the motor. | 03-06-2014 |
20140159618 | ELECTRIC-MOTOR FURNITURE DRIVE HAVING A POWER SUPPLY DEVICE - An electric-motor furniture drive includes a power supply device, a manual control for moving movable furniture components relative to each other, and an electric motor with reversible rotation direction. A speed-reducing transmission is connected downstream of the electric motor and an additional transmission is connected downstream of the speed-reducing transmission. The power supply device has a mains connection, transforms the mains-side input voltage into at least one output-side low voltage and is configured for galvanic isolation between the mains-connected input side and the output side for operating the electric-motor furniture drive. The power supply device is designed as a switched-mode power supply and has an intermediate circuit, a control device for controlling the switched-mode power supply, and a secondary unit. The power supply device provides an output-side operating voltage at the output thereof in an operating state and provides an output-side idle voltage at the output in an idle state. | 06-12-2014 |