Abstract: A three-dimensionally shaped body module component and a method for the production thereof, which is assembled from a plurality of body module segments (1). The body module segments (1) are sections of continuously pultruded fibre plastic composite pultrudates, wherein each pultrudate has a basic structure consisting of endless fibres (20) laid in accordance with the force flux with respect to a predetermined geometry of the component. Furthermore, the basic structure has at least one passage (30) per body module segment (1) for receiving a connecting means (11), so as to connect at least two of the body module segments (1). The fibres (20) laid in accordance with the force flux are laid around the passage (30), and, furthermore, a stabilisation structure (40) made from fibres is arranged around it.

Abstract: The present invention relates to a rear package tray assembly, which includes: a pair of rear spring seats; a pair of roof side rails constituting a portion of an upper vehicle body; and a pair of package tray side member directly connecting the rear wheel spring seats with the roof side rails.

Abstract: A folding chair capable of being moved between a folded position and an unfolded position, includes: two units, each of which includes first and second tubes hinged together via a hinge pin; and a canvas sheet, where each assembly of two tubes includes a rigid part at the hinge pin thereof, said rigid part being arranged between two tubes and having: a groove for receiving a tube of the assembly without any degree of freedom; first and second cradles arranged on either side of the hinge pin, such that when the chair is in the unfolded position, the first cradle bears against the upper section of the other tube and the second cradle bears against the lower section of the other tube.

Abstract: A fold-down tablet used in a chair is disclosed. The tablet includes a board, a torsion positioning mechanism, a shaft and an armrest. The torsion positioning mechanism is fixed to a side of the board for horizontally rotating and positioning the board. The shaft has a protrudent positioning bar and is fixed to the torsion positioning mechanism for making the board vertically rotatable. The armrest has a shaft hole for rotatably receiving the shaft and a slot communicating with the shaft hole. When the board is turned horizontally, the positioning bar is embedded into the slot to be restricted.

Abstract: A shade for attachment to a child carrier between a foot portion of the child carrier and a canopy portion of the child carrier includes a first cuff adapted to receive the foot portion of the child carrier and secure the shade to the foot portion; an edge located opposite to the first cuff and adapted to secure to the canopy portion of the child carrier; and a cover extending between the first cuff and the edge, wherein the cover defines opposed first and second sides. Other embodiments of the shade, and methods for its use, are described herein.

Abstract: A seating device using a bicycle seat post as one leg of a tripod seat base, employs a clamp member attaching to the seat post and receiving two other tripod leg portions therein. A web member extending from lower portions of the two other tripod leg portions passes in front of the lower seat post portion, creating tension for providing a seat base using the bicycle seat as the seating surface.

Abstract: An adjusting method and a structure for a seat post of a bicycle are provided. The structure of the seat post includes an adjusting tube, four pulleys, a pushing member, a main tube, an elastic member, and a cord. The adjusting tube is coaxially movably disposed in the main tube, while the pushing member is coaxially movably disposed in the adjusting tube and coaxially fixed with the main tube. One of the pulleys is pivotally disposed in the adjusting tube, and the other pulleys are pivotally disposed in the pushing member. Two of the pulleys inside the pushing member are movable along the pushing member. The cord is wound around the four pulleys. The elastic member is disposed in the pushing member and can push the pulleys to move. Pulleys moving along the pushing member push the adjusting tube moving outwardly form the main tube.

Abstract: Disclosed in the smart car seat manufacture method, which features in that the smart car seat is manufactured in such a way that the cushion pad assembly supporting the user's hips is assembled with the cushion cover covered on the cushion pad, and the back pad assembly is assembled, which supports the sit passenger's back with the light emitting raw sheet sewed on the back cover so as to form the portion which is exposed to the outside along with the back cover covered on the back pad. The smart car seat comprises the back frame, the cushion frame and the light emitting raw sheet processed along with the head rest by way of the finish process.

Abstract: Described is an inflatable car seat that provides for easy transport and inflation as well as providing suitable fixings for secure installation in a vehicle. The car seat includes an elongate pump housing including an air pump, and first and second inflatable members each secured to the pump housing along a portion of the length thereof. Operation of the air pump inflates the first inflatable member to form a base portion of the car seat, and inflates the second inflatable member to form a rear portion of the car seat.

Abstract: A seat is provided and may include a rigid body having a unitary construction and a recessed area defining a seating location. The seat may additionally include an insert secured to the rigid body within the recessed area. In one configuration, the insert may be formed from a different material than the rigid body.

Abstract: The present invention provides a safety belt assembly and a child safety seat therewith. The safety belt assembly includes a safety belt, and a buffer mechanism installed on the safety belt. The buffer mechanism is for detachably connecting two parts of the safety belt in a longitudinal direction so as to form a folding portion of the safety belt. When a pulling force is applied to the safety belt, the buffer mechanism absorbs a part of the pulling force to separate the two parts of the safety belt. It has advantages of simple structure, improved reliability, easy operation and low cost.

Abstract: A child safety seat includes a seat shell including a backrest that has a lengthwise axis, a headrest assembled with the seat shell and movable along the lengthwise axis of the backrest, and a headrest adjustment mechanism. The headrest adjustment mechanism includes two tube segments affixed with the backrest, a mount frame affixed with the headrest, two latches and a driving part. The mount frame is movable with the headrest along the tube segments. The two latches are assembled with the mount frame, wherein the latches are operable to move transversally relative to the headrest to respectively engage with the two tube segments to lock the headrest in position, and to respectively disengage from the tube segments to allow adjustment of the headrest. The driving part is connected with the two latches, and is movable along the lengthwise axis to cause the latches to respectively disengage from the tube segments.

Abstract: A seating unit having a seat assembly and an adjustment assembly coupled to the seat assembly is provided, where the adjustment assembly includes a single drive mechanism for translating the seat assembly from a first position to a second position and expanding the seat assembly from a first configuration to a second configuration.

Abstract: A seating unit that includes a seat-lift assembly adapted to move the seating unit between a closed and a seat-lift position is provided. The seat-lift assembly includes a drive linkage mechanism, and a lift linkage mechanism. The seat-lift assembly is attached to a seat linkage mechanism that includes a seat-mounting plate, a base plate coupled and a linear actuator for automating adjustment of the linkage mechanism. In operation, the drive linkage mechanism is moveably interconnected to the base plate and adapted to independently raise at least a first portion of the seat frame with respect to the base plate, the first portion being raised at a first rate, and the lift linkage mechanism is moveably interconnected to the seat-mounting plate, and adapted to independently raise at least a second portion of the seat frame with respect to the seat-mounting plate.

Abstract: A system and method allow for a platform to be collapsed and moved in a vehicle. In one embodiment, a wall rail platform system disposed in a vehicle includes a collapsible platform. The collapsible platform has a position, which is a collapsed position or an un-collapsed position. The system also includes a rail and a carriage. The carriage is attached to the collapsible platform. The carriage is vertically moveable along the rail.

Abstract: A swivel device on which a chair can be secured, and which is configured to allow the easy elimination or reduction of accumulated dirt and/or sand. The swivel device may include a mounting device, and a base, wherein the mounting device is connected to the base so that the mounting device can rotate with respect to the base. The swivel device may further include a device for keeping a chair stationary on the mounting device, a first cavity located between the mounting device and the base, and a device for aiding rotation of the mounting device with respect to the base located in the first cavity. There may be a first opening of the mounting device leading to the first cavity, leading to a first opening of the base, which leads to an area outside of the swivel device. The swivel device accommodates all straight and lounge chairs.

Abstract: An adjustment apparatus for a wheelchair back that can be used with various backs, that can be adjusted in a plurality of ways using a single adjustment point, and that can be adjusted without the use of tools. In another aspect, includes a support mechanism for mounting an adjustment apparatus for a wheelchair back that can be engaged using gravity, that provides at least one support point, and that can be utilized without the use of tools. Still another aspect of the wheelchair back assembly includes a mounting clamp that is simple in construction, that provides at least one support point, and that can be easily disassembled and adjusted to accommodate upright frame members of various diameters without the use of a tool.

Abstract: A lock assembly for selectively and releasably holding a pivoting armrest of a vehicle in place relative to an adjacent seat back is disclosed. The lock assembly includes a first locking element fixedly attached to the seat back and a second locking element movably attached to the armrest. Both locking elements have engagement surfaces whereby the second locking element is releasably engageable with the first locking element. The first locking element includes a cover that, together with a base, defines a pocket. The second locking element includes a spring loaded attachment assembly. The assembly provides operator-movable attachment to the armrest. The second locking element further includes an engagement portion on which said engagement surface is formed and an anchoring portion. An operator-manipulable release tab extends from the engagement portion and through the tab-passing slot of the first locking element when the first and second locking elements are engaged.

Abstract: A footrest apparatus for a vehicle seat includes a fixed member fixed to the vehicle seat, a footrest movable between a retracted position and an operating range, and a link mechanism which connects the fixed member and the footrest to each other and moves the footrest between the retracted position and the operating range by extending and contracting. The link mechanism includes a pair of link members which rotate in synchronization with each other, each of which is formed as a plate that is orthogonal to a widthwise direction of the vehicle seat, and a connecting member formed as a plate which extends in the widthwise direction, wherein common edges of the pair of link members are connected to opposite ends of the connecting member in the widthwise direction, respectively.

Abstract: A vehicle frame component has two side wall portions arranged to face each other and a connecting portion that connects edges of the two side wall portions, and that forms a framework of a vehicle component. A connecting-side protruding portion that protrudes into a space between the two side wall portions while extending along a direction in which the connecting portion extends is formed in at least part of the connecting portion, and at least part of the connecting portion is formed in a shape in which the connecting portion is curved in an arcuate shape and leaned in a direction opposite to a direction in which the connecting-side protruding portion protrudes.

Abstract: A seat member for use with a child's scooter vehicle for preventing the unintended flipping over of the scooter. The seat member having a body portion having opposing top and bottom surfaces and front and back surfaces. The seat member includes a generally planar seat surface on the top surface of the body portion and a projection member provided on the top back surface of the body portion. At least a portion of the projection member extends into the generally planar seat surface configured to prevent a user from leaning too far backwards on the seat member thus preventing the unintended flipping over of the scooter.

Abstract: An inflatable sofa including a first inflatable sheath, a second inflatable sheath, a hose, an injection valve, a leaking valve and a pump is provided. The first inflatable sheath has a first pressure, and the second inflatable sheath disposed in the first inflatable sheath has a second pressure, in which the second pressure is less than the first pressure. The hose is connected between the pump and the second inflatable sheath, and the injection valve is disposed on the second inflatable sheath and located in the first inflatable sheath. The leaking valve is disposed on the first inflatable sheath and used to leak gas within the first inflatable sheath to outside of the inflatable sofa.

Abstract: A seat cushion includes a seat base frame, a cushion pad disposed on the seat base frame, and a skin material that covers the seat base frame and the cushion pad. The seat base frame includes a pair of side frames that extends in the front to back direction, a front elastic member that is installed in the pair of side frames and is in contact with the cushion pad, and a rear elastic member that is disposed while being separated from the front elastic member by a predetermined distance and is in contact with the cushion pad, in which a pad contact surface of the front elastic member is disposed to be inclined rearward with respect to a horizontal plane and a pad contact surface of the rear elastic member is disposed to be inclined forward with respect to the horizontal plane or to be parallel thereto.

Abstract: A two-piece strap has conjugate proximal ends and conjugate branched distal ends, which are adapted to loop around a supporting structure, such as the arms of a chair, to secure a child in an infant seat to the structure. The strap serves the dual function of securing the infant in the baby seat and securing the baby seat to an anchor structure. Also, each end of the strap can be independently secured to an anchor structure, as compared to previous inventions in which the straps wrap around the supporting structure. This design affords greater adaptability to various anchor structures, such as the arms of a chair or the sides of a shopping cart.

Abstract: An inflatable shoulder harness assembly for an aircraft seat including a shoulder belt, a retractor, an airbag contained within an outer cover, and a belt guide slideably receiving the inflatable airbag and outer cover therein when the shoulder belt is retracted, the belt guide defining an elongate channel for facilitating free movement of the outer cover during belt fastening and retraction. The assembly further includes an exit bezel for finishing the look of the seat and a stiffening element for preventing kinking, bunching and twisting of the outer cover.

Abstract: A system for removing desired subsurface materials. A drilling system has a sonic drill head assembly capable of rotating a drill string and transmitting oscillating forces to the drill string. A material removal system comprises an outer tube attachable to the drill string. An inner tube has an outer diameter sized so that that at least a portion of the inner tube is positionable in an inner volume of the outer tube with an annular void defined between the outer tube and the inner tube. A distal end of the inner tube defines at least one opening such that an interior conduit of the inner tube is in fluid communication with the annular void outside of the distal end of the inner tube. Pressurized fluid can be urged from the annular void through the opening to the interior conduit, entraining the desired subsurface materials therein for removal to a discharge tank.

Abstract: A method of forming a protective tip on a wire brush so as to make the brush less prone to damage sensitive surfaces, includes the steps of providing a brush with a wire core and a plurality of bristles defining a bristle block extending radially from the core and anchored in the core, and melting a portion of the wire core at an end thereof, by applying an energy source to the end, to form a protective tip.

Abstract: A wheel hub structure of a bicycle includes a wheel hub having a first hub body, a second hub body, a shrink ring, and a ratchet base. The shrink ring could be assembled between the first hub body and the second hub body or between the second hub body and ratchet base. Therefore, the length of the wheel hub or the ratchet base could be increased.

Abstract: A wheel hub structure for a bicycle includes a wheel hub having a hub body, a first wheel plate defined at one end of the hub body, a second wheel plate defined at another end of the hub body, a first extruded ring outwardly extruded from the first wheel plate, a second extruded ring outwardly extruded from the second wheel plate, a plurality of sleeving rings respectively sleeving an outer periphery of the first extruded ring and an outer periphery of the second extruded ring. Therefore, each sleeving ring of the first extruded ring or the second extruded ring reinforces a center structure of the first wheel plate or the second wheel plate.

Abstract: In order to provide a hydraulic brake system of a motor vehicle that damps noises that would be produced under a vehicle running support brake control and damps uncomfortable feeling that would be applied to a driver when a brake pedal stroke takes place, there is proposed a brake fluid pressure control system in which a fluid pressure required by a selected brake cylinder of a road wheel is calculated based on a behavior of the motor vehicle, and for obtaining the required fluid pressure required by the selected brake cylinder, an upstream side brake fluid pressure controlling device is operated to increase the brake cylinder fluid pressure to a given pressure and thereafter a downstream side brake fluid pressure controlling device is operated to further increase the brake cylinder fluid pressure.

Abstract: The disclosure relates to a fluidically controlled pressure switching valve for a vehicle brake system including a valve chamber, which is arranged in a valve interior and into which an inlet opening and an outlet opening open, and a valve closing body, which is movable in the valve interior and which comprises a piston, defining a first piston surface and a second piston surface, and including a closing element. The valve closing body is movable in accordance with a pressure difference between a pressure acting on the first piston surface and a pressure acting on the second piston surface, against the force of a setting spring arranged in the valve interior, between a closed position, in which a fluid connection between the inlet opening and the outlet opening is interrupted, and an open position, in which the fluid connection between the inlet opening and the outlet opening is open.

Abstract: A control system for a vehicle (10) having an air braking system includes a supply line (13) for receiving a supply of compressed air for the air braking system. One or more brake members (19) are provided in fluid communication with the supply line (13) and controllable such that upon receipt of compressed air, the brake members (19) become disengaged to facilitate movement of the vehicle (10). Upon removal of the compressed air, the brake members (19) become engaged to prevent movement of the vehicle (10). An isolator device (20) is positionable within the supply line (13) upstream of the brake members (19) and is controllable to operate in a first state wherein the compressed air flows along a supply line (16) and a second state wherein the compressed air is prevented from flowing along the supply line (16) to the brake members (19).

Abstract: Systems and methods for a mobile power conditioning platform are disclosed. According to one embodiment of the invention, a mobile power conditioning platform is positioned proximate to a power grid, coupled to the power grid via an offboard power coupling, coupled to an onboard electrical system of a vehicle via a vehicle power coupling, and transfers electric power between the power grid and the onboard electrical system. One or more onboard generators of the vehicle may modify operation at least partly in response to the transfer of electric power.

Abstract: Disclosed is a charging apparatus to supply a power to a battery of an electric vehicle. The charging apparatus includes a bidirectional power conversion unit including three pairs of switching device groups and having one end connected to a power system and an opposite end; an energy storage unit connected to the opposite end of the bidirectional power conversion unit to store the DC power output through the opposite end of the bidirectional power conversion unit; a multi-DC power output unit to output the DC power to an outside in the first inverse operation mode; and a charging control unit to detect a charging condition of the charging apparatus. The switching device groups serve as buck-converters, respectively, in the first inverse operation mode to convert the DC power into another DC power having a level different from a level of the DC power.

Abstract: An electric motor that is fixed to a revolving frame, an electrical equipment that is supported by the revolving frame by using a vibration absorption mount, and a cable for establishing a connection between the electric motor and the electrical equipment are provided. A connector mounting member having an outer shape smaller than that of a box is provided in the box of the electrical equipment, and an equipment-side connector is provided in the connector mounting member. A cable-side connector of the cable is connected to the equipment-side connector, and a cable end portion of the cable is fixed to the box by a clamp member. As a result, the vibration that is transmitted to the cable can be matched with the vibration that is transmitted to the cable-side connector.

Abstract: A power supply system includes an electric storage device, a connecting terminal area, a main energization line, a sub-energization line, a first energization switching unit for switching between an energized state and a non-energized state of an energization line of the main energization line connecting the electric storage device and a loading apparatus, a second energization switching unit for switching between an energized state and a non-energized state of an energization line of the main energization line connecting a branched part and the connecting terminal area, a third energization switching unit for switching between an energized state and a non-energized state of an energization line of the main energization line connecting the second energization switching unit and the connecting terminal area, and a control device that detects switching states of the first, second and third energization switching units and that controls their switching operations.

Abstract: An energy store for a photovoltaic system has: a first capacity range which is provided for feeding into the power grid; a second capacity range which is provided for internal consumption and feeding into the power grid; and a third capacity range which is provided for feeding into the power grid.

Abstract: An apparatus and a method for power supply are provided. In the invention, the residual standby power can be quickly discharged by an additional fast discharging unit within a predetermined time when an external AC power (for example, city power) received by the power supply apparatus capable of supporting ATX (Advanced Technology Extended) specification is disappeared (for example, power trip). Accordingly, any host system applied with the inventive power supply apparatus and method would not be in crash when the received external AC power (city power) is recovered, and thus effectively promoting the stability of the applied host system.

Abstract: The supply of an electric equipment material (5), such as a telecommunications station, is implemented in priority by an intermittent power source (6), and makes use as much as possible of batteries (31) and as little use as possible of a fuel cell electrochemical generating unit (4) for increasing the life of the latter. The equipment and the generating unit are supplied by the source so as to produce and stock fuel in the generating unit when the power of the source exceeds the operation power of the equipment and the batteries are in full charge. Destocking the fuel in the generating unit, supplying the equipment by the generating unit and charging the batteries by the generating unit are carried out as soon as the power of the batteries is at a discharge threshold and until the batteries reach the full charge.

Abstract: System and method for regulating a power conversion system. For example, a system controller includes a signal generator and one or more power-consumption components. The signal generator is configured to receive a feedback signal related to an output signal of the power conversion system, a current sensing signal and an input voltage, and to generate a control signal based on at least information associated with the feedback signal, the current sensing signal and the input voltage. The power-consumption components are configured to receive the control signal. The signal generator is further configured to determine whether the feedback signal is smaller than a feedback threshold for a first predetermined period of time, the current sensing signal is smaller than a current sensing threshold for a second predetermined period of time, and the input voltage is smaller than a first threshold for a third predetermined period of time in magnitude.

Abstract: A method (3000) of load adjustment sharing for a space (100) including a first zone (110) and a second zone (120), and a control unit (10) for a load adjustment sharing system (1) are provided. The method comprises the steps of receiving (301) information (130) related to a load adjustment for the space, and receiving (302) environment information (113) about the first zone and environment information (123) about the second zone. Further, based on the environment information about the first zone, the environment information about the second zone and the information related to the load adjustment for the space, a load adjustment share (114) for the first zone and a load adjustment share (124) for the second zone are determined. The present invention may be utilized in buildings including a plurality of zones. The present invention is advantageous in that the load adjustment sharing is intelligently adapted to the environment circumstances in the different zones.

Abstract: An uninterrupted power supply and detection device wherein a light fixture operates with and is coupled to a driving and linking module and a power supply wire. The driving and linking module connected to the power supply wire can sense a voltage state on the power supply wire. At this time, operation of the light fixture can be controlled by a wired or wireless switch of a control unit. When the voltage state is abnormal, the electricity detecting unit set in the driving and linking module can detect a signal representing abnormal power supply. Thereby, backup power can be supplied for driving emergency illumination of a light emitting element of the light fixture. Accordingly, original operation performed in a general power supply system can be kept and backup power can be supplied to keep illumination of the light fixture when the normal power supply is interrupted.

Abstract: An apparatus and method for backfeed detection in, and control of, an uninterruptible power system is disclosed. An adaptive controller in an uninterruptible power system enables delivery of power from a second, backup, power source, to loads connected to an output of the system, when a first, primary, input source is detected to be in a fault condition. Subsequent to enabling the second power source, and within a time interval that is less than one AC period following the detection of the input fault, the controller may sense and measure a backfeed of energy from the second source to the first source and may adapt a subsequent fault response based upon the measurement of the backfeed. Adapting the subsequent response may comprise adapting a response to a fault at the output. The subsequent response may comprise disabling or enabling delivery of energy from the second source.

Abstract: A method for controlling output waveforms of an uninterruptible power supply (UPS) provides multiple types of output waveforms through a UPS for users to selectively switch to a waveform of output power after the UPS enters a battery mode. The output waveforms include square wave and sinusoidal wave. Based on load characteristics, users can choose either square wave or sinusoidal wave as the waveform of the output power. Accordingly, single UPS can meet the demand of high efficiency and longer discharge time or better output characteristics and low noise according to different load conditions.

Abstract: A semiconductor device includes a power source selection circuit configured to turn on and off each of a plurality of power source switches. The power source selection circuit includes a power source selection unit configured to select one power source from among the plurality of power sources, and a feedback control unit configured to output an on command signal to turn on an electrical connection between the selected power source and the electric circuit to a power source switch to be connected to the selected power source. When the power source selection unit switches a power source to select to another, the feedback control unit feeds back a signal indicative of that an off command signal to turn off electrical connections between the plurality of power sources and the electric circuit has been output to all of the plurality of power source switches at a predetermined delay time.

Abstract: A solar power system includes at least one alternating-current module and a communication apparatus. Each alternating-current module includes a solar panel and an alternating-current inverter. The communication apparatus connects to the alternating-current module and controls stand-alone power-generating operations on the alternating-current module. The communication includes a module connector and a control circuit. The module connector is configured for connecting with the alternating-current module. The alternating-current module can be parallel-connected on a household power grid selectively. The communication apparatus can transmit a stand-alone power-generating command to the alternating-current module. The alternating-current inverter may cancel an anti-islanding protection procedure thereon according to the stand-alone power-generating command.

Abstract: Provided is an inverter system capable of more economically and efficiently performing photovoltaic power generation by automatically switching an integrated operation and an independent operation of inverters according to voltage values and current values of photovoltaic panels without a separate communication function. The inverter system for photovoltaic power generation according to an exemplary embodiment of the present disclosure is an inverter system which changes direct current power output from a first photovoltaic panel and a second photovoltaic panel to alternating current power and includes: a first inverter and a second inverter, in which all of the outputs of the first and second photovoltaic panels are applied to the first inverter, or the output of the first photovoltaic panel is applied to the first inverter, and the output of the second photovoltaic panel is applied to the second inverter according to output values of the first and second photovoltaic panels.

Abstract: Wireless power transfer devices are provided. The wireless power transfer device may include a plurality of stacked resonance structures, and adhesive layers between the resonance structures. Each of the resonance structures includes a base board including a base coil, interposer boards including interposer coils and stacked on the base board, and conductive pillars penetrating the base board and the interposer board. The conductive pillars connect the interposer boards to each other.

Abstract: A contactless inductively coupled power transfer system is provided_including multiple pairs of power transmitter and power receiver coils and a power management module for controlling the supply of power to transmitter coils or the power supplied by the power receiver module to loads. The design is particularly suited for use in a wind turbine to supply power to the nacelle. The transmitter coils may be driven in phase at the same frequency or at different frequencies selected to avoid interaction between transmitter coils and the power transmitter module. The transmitter and receiver coils may be arranged in a traditional slip ring type configuration with adjacent coil pairs are physically spaced apart to avoid cross coupling with adjacent transmitter and receiver coil pairs shielded from each other. The power transmitter module may employ Zero Voltage Switching (ZVS).

Abstract: A wireless power transmitter includes a source resonator configured to wirelessly transmit power via magnetic coupling with a target resonator; and an impedance adjusting unit configured to adjust an impedance of the source resonator using a plurality of impedance-matching bars located in the source resonator.