A support disk fixing apparatus which includes an upper surface to which a wafer is bonded, a lower surface, a cylindrical side surface between the upper surface and the lower surface, and a chamfered portion between the upper surface and the side surface, includes a base upon which the support disk is placed; and a fixture that is provided on the base, and that has a first surface that abuts against the side surface of the support disk and covers the side surface of the support disk, and a second surface that abuts against the chamfered portion of the support disk and covers the chamfered portion of the support disk.

The present invention relates to an adjusting device of wafer machine, which includes a rotary adjustment assembly that is rotatable to cause the rotation of a rod so as to displace a support block thereby elevating or lowering a support post. A balance board is thus caused to move a wafer substrate so as to realize balancing of wafer through the support post, whereby efficient adjustment of the wafer machine to a balanced position can be achieved without extra expense of time in adjustment operation and thus accelerating the time of manufacturing process and providing extremely high precision and further effectively reducing the potential risk of damage caused by over-adjustment.

An optical fiber fusion splicer includes: a windshield cover having a rotating shaft and rotating around the rotating shaft so as to be openable and closable; a cable member wrapping unit coupled and fixed to the windshield cover on the same axis as the rotating shaft of the windshield cover or formed as a portion of the windshield cover, the cable member wrapping unit being rotatable in a normal direction or in a reverse direction around the rotating shaft; a first cable member winding unit that is a rotary pulley, a non-rotary pulley, or a rotary gear; and a closed-loop member including a deformable cable member wound around the cable member wrapping unit and the first cable member winding unit, the closed-loop member constituting a closed loop.

A multi-functional vice base including a main body and a plate is provided. The main body includes a bottom surface, side surfaces and fixing portions. At least two side surfaces form a groove therebetween. Each fixing portion is disposed between the groove and the bottom surface. A first fixing member goes through a through hole of one of the fixing portions and is fixed on a working machine bench. The plate is detachably disposed at one of the side surfaces. Whereby the vice base can be mounted on various sized horizontal machining centers. Besides, plates with different size are allowed to be mounted on the main body for clamping work pieces whose sizes are different.

A clamp device includes a clamp main body, an engagement assembly, a clamp rod, a drive mechanism, and a support mechanism. The engagement assembly can be changed over between a diameter-expanded state in which it engages with an inner circumferential surface of an aperture in a workpiece, and a diameter-reduced state in which it does not so engage. The clamp rod is engaged with an interior of the engagement assembly. The drive mechanism drives the clamp rod to and from the clamp main body. The support mechanism supports the engagement assembly with a pneumatic force of pressurized air. At least a part of the pneumatic force is released after the engagement assembly has been expanded in diameter.

An optical fiber fusion splicer that heats and fusion-splices optical fibers to each other, the optical fiber fusion splicer includes: a coating clamp installation base; a coating clamp that is attached to the coating clamp installation base and has a coating clamp lid that is openable and closable; and a first power source for advancing the coating clamp installation base and opening the coating clamp lid. An operation of opening the coating clamp lid is performed using the first power source after the fusion splicing is completed.

A support structure for supporting a semiconductor device during a bonding operation is provided. The support structure comprises a body portion defining an upper surface configured to support a semiconductor device during a bonding operation. The upper surface defines a constraining feature for constraining at least a portion of the semiconductor device during the bonding operation.

A device for cleaning trays comprises a tub that has a bottom and a wall. The tub is dimensioned such that a baking tray can be placed therein. The device further comprises a dish drain that can be placed in the tub. Said device for cleaning a baking tray uses only a small amount of space in a kitchen and is easy to handle. In fact, in a typical kitchen that already has a dish drain, the device requires no additional space.

A device for recontouring a gas turbine blade includes at least one support configured to rest on an edge of the gas turbine blade during the recontouring, at least one side bearing configured to rest on an intake side or an outlet side of the gas turbine blade during the recontouring and a machining unit for machining the gas turbine blade. The machining unit is configured to fuse at least one partial area of the edge of the gas turbine blade using a beam of energy that is targeted such that material of the blade solidifies into a new contour, substantially without the addition of supplementary material.

An image forming apparatus is provided. The image forming apparatus includes a conveyer configured to convey a recording medium along a conveying path in a conveying direction, an image forming unit configured to form an image on the recording medium being conveyed, a supporting member arranged in a position to face the image forming unit and configured to support the recording medium, and an aspirator configured to aspirate dust through an aspiration inlet, which is formed in a downstream position along the conveying direction with respect to the image forming unit and in proximity to a downstream end of the supporting member.

The present invention aims to provide a technique that prints characters and patterns clearly onto a tire surface without complicated operations. A tire printing device of the present invention includes a printer head that ejects and applies a coating material onto a tire surface, a widthwise moving unit that moves the printer head along the width direction of the tire, a radial moving unit that moves the printer head along the radical direction of the tire, and a swinging unit that swings the printer head around the axis along the circumferential direction of the tire.

A liquid feed valve unit is configured to switch between a releasing mode for forcibly opening a valve and a blocking mode for closing the valve, and the valve can therefore be opened and closed in a short time as needed. Since the releasing mode is implemented by pushing the peripheral part and the pressure-receiving part of the flexible member, the flexible member can be prevented from flexing toward the outside of the liquid accommodating chamber even in the case that the pressure-receiving part is pushed. In this case, since a residual pressure can be prevented from forming in the liquid accommodating chamber, there is no need to suspend operation, and it is possible to immediately proceed to the next operation. A fast-operating liquid feed valve unit can thereby be obtained.

Ink in an ink tank is fed through a dissolved gas control filter to a printer head. A gas pressure changing mechanism reduces pressure in a gas pressure control tank. In response, the dissolved gas control filter removes gas dissolved in the ink. The gas pressure control tank is placed under pressure corresponding to a sum of the pressure reduced by the gas pressure changing mechanism and the pressure of the gas having been removed from the liquid. A gas pressure measuring part measures the sum of these pressures as pressure in the gas pressure control tank. Then, a controller determines when time of exchange of the dissolved gas control filter has come based on the magnitude of a gradient of gas pressure variation in the gas pressure control tank.

A particle removal device for an ink jet printer is discussed. The particle removal device includes a first separator comprising an arrangement of obstacles including at least two rows of obstacles that extend laterally with respect to a flow path of ink in the first separator. The rows of obstacles are offset from one another by a row offset fraction. The arrangement of obstacles is configured to preferentially route larger particles having diameters greater than a critical diameter through the arrangement and along a first trajectory vector that is angled with respect to the direction of the flow path of the ink. The angle of the first trajectory vector with respect to the ink flow path is a function of the row offset fraction. Smaller particles having diameters less than the critical diameter travel through the arrangement along a second trajectory vector that is not substantially angled with respect to the flow path of the ink. The first separator causes a pressure drop of the ink of less than about 100 Pa.

A liquid ejection apparatus includes: (a) a storage device for storing an image data set representing a plurality of images; (b) a liquid ejection head for performing an image formation on each recording medium; (c) a curl reduction device for reducing curl caused in each recording medium having the corresponding image formed thereon by the liquid ejection head; (d) an output tray for receiving each recording medium whose curl has been reduced by the curl reduction device, such that the received recording media are stacked on the output tray; and (e) a control device configured to control the curl reduction device, such that the curl caused in an earlier one of the recording media is reduced by a smaller degree than the curl caused in a later one of the recording media that has been subjected to the image formation later than the earlier one of the recording media.

A sheet discharging device includes a first conveying path that guides a sheet to be conveyed. A second conveying path branches from the first conveying path. A sorting section sorts a sheet being conveyed on the first conveying path into either a downstream side of the branch point or the second conveying path. A first discharge tray is placed at a position downstream of the first conveying path and receives a sheet discharged from the first conveying path at a first sheet loading surface. A second discharge tray is placed at a position downstream of the second conveying path and below the first discharge tray, and receives a sheet discharged from the second conveying path at a second sheet loading surface whose distance to the first sheet loading surface increases toward a downstream side thereof in a sheet discharging direction.

An optical scanning device includes: a driving unit that drives a light source that outputs multiple light beams; a deflecting unit that scans a scanning surface in a main-scanning direction by deflecting the light beams, the scanning surface moving at a predetermined line speed in a sub-scanning direction; and a control unit that changes number of the light beams according to the line speed by controlling the driving unit, changes a scanning speed of the deflecting unit in the main-scanning direction according to a difference between an exposure amount per unit length in the main-scanning direction after a change in the number of the light beams and a predetermined exposure amount, and changes light intensity of each of the light beams output by the light source according to an amount of a change in the scanning speed.

An image forming device includes a photoreceptor drum including a target surface that is scanned in a main scanning direction and a sub-scanning direction, an exposure head including a plurality of light emitting segments aligned in parallel to the main scanning direction, an exposure driving unit which selectively drives the plural light emitting segments, a storing unit which stores a profile where the respective positions of the plural light emitting segments correspond to a correction amount from the main scanning direction toward the sub-scanning direction at every position, and a correcting unit which smoothes a local change of the correction amount in the profile.

A tray unit includes a first tray, a second tray, and a cover. The first tray includes a first holding surface for holding thereon a first sheet. The second tray includes a second holding surface for holding thereon a second sheet. The second tray is configured to slide above and along the first holding surface between a first second-tray position and a second second-tray position, and is configured to pivot between the second second-tray position and a third second-tray position in which the second tray stands upward with respect to the first holding surface. The cover is configured to cover from above at least a part of the second tray when the second tray is in the second second-tray position, and is configured to pivot between a first cover position in which the cover extends along the first holding surface and a second cover position in which the cover stands upward with respect to the first holding surface.

Provided is a technique capable of suppressing the deterioration in azimuth resolution and distance resolution in even a modulated and transmitted or received signal or a signal reflected by an object and varied in intensity when acquiring waveform information. A measurement device comprise: a plurality of sensors which receive waves propagating through a space; and a sampling timing calculation means which obtains, on the basis of the relative positions of the sensors and the velocities of the waves, the difference between the arrival times of the waves received by the respective sensors and calculates, for each sensor, sampling timing for acquiring the waveform information relating to the waves, on the basis of the difference between the arrival times.

A method for monitoring the state of a fill level measuring device (1) operating according to the radar principle and such a fill level measuring device, wherein the fill level measuring device (1) has at least one transceiver unit (2) for transmitting and receiving electromagnetic signals, and at least one antenna (3) for guiding, radiating and receiving electromagnetic signals. The antenna (3) has at least one interior space (4), and wherein the antenna (3) has a transmission characteristic with regard to the transmission of electromagnetic signals. Electromagnetic signals are emitted or directed at least partially in the direction of a wall section (5) of the interior space (4) of the antenna (3), the received electromagnetic signals are evaluated with respect to the transmission characteristic of the antenna (3), and the result of the evaluation is compared to at least one stored reference value.

Assisted-GPS for a portable biometric monitoring device is provided. The portable biometric monitoring device may obtain updated ephemeris data from an associated secondary device via a short-range, low-power communication protocol. The secondary device may be a computing device such as a smartphone, tablet, or laptop. Various rules may control when the ephemeris data is updated. The ephemeris data may be used in the calculation of the global position of the portable biometric monitoring device. Additionally, the portable biometric monitoring device may communicate downloaded position fixing data to the associated secondary device. The associated secondary device may then calculate the global position from the position fixing data.

In embodiments, a device is illustrated for determining a sample rate difference between a first information signal and a second information signal including an offset determiner for determining for each of a plurality of segments of the first information signal, associated offset values which temporally align the plurality of segments with respect to the second information signal and a calculator for calculating the sample rate difference on the basis of the offset values.

Disclosed is an object detection device capable of improving object detection accuracy by preventing erroneous combination detection. In this device, a detection object region correction unit (103) corrects a detection object region set by a detection object region set unit (102) on the basis of moving speed map information associated with a coordinate group in a reference image plane and the detected moving speed on each coordinate, which is detected by a radar. Thus, the detection object region can be amended by the use of the moving speed map information even when the detection object region is obtained as a result of erroneous combination. As a result, the object detection accuracy can be improved.

A system for determining a coverage region of a radar device is disclosed. The system may have one or more processors and a memory. The memory may store instructions that, when executed, enable the one or more processors to receive radar data generated by a radar device and lidar data generated by a lidar device. The radar data may include radar data points representing objects detected by the radar device and the lidar data may include lidar data points representing objects detected by the lidar device. The one or more processors may be further enabled to determine a radar coverage region for the radar device by comparing one or more radar data points to one or more lidar data points, and to generate data used to display a graphical representation of the radar coverage region.

This disclosure provides a tracking information control device. The device includes a receiver for receiving, from two radar devices, data relating to a target echo received by a radar antenna of one of the radar devices, and data relating to a target echo received by a radar antenna of the other radar device, the data being obtained from tracking the target echoes, respectively, a determiner for determining whether the target echoes indicate the same target object, an ID applier for applying the same ID to the target echoes when the determiner determines that the target echoes indicate the same target object, and a transmitter for transmitting the same IDs to the radar devices in order to inform whether the target echoes displayed by the radar devices, respectively, indicate the same target object.

A signal processing device, which includes an echo signal input module for inputting echo signals from an antenna discharging electromagnetic waves to a predetermined area and receiving the echo signals reflected on a target object, an echo signal level detection module for detecting a level of each of the echo signals from each location within the predetermined area, a target object detection module for detecting the target object based on the levels of the echo signals, a correlation processing module for performing scan-to-scan correlation processing of a plurality of scans, and a level adjustment module for adjusting the levels of the echo signals after the scan-to-scan correlation processing. The level adjustment module adjusts the levels of the echo signals corresponding to the locations where the target object detection module detects the target object.

There is provided a radar receiver that effectively prevents local oscillator signals from leaking out from an antenna. A receiver 21 includes a local oscillator 5, a mixer 6, a buffer amplifier 11, and a mode switcher 16. The local oscillator 5 outputs a local oscillation signal LO. The mixer 6 mixes a high-frequency signal RF received by a radar antenna 2 with the local oscillation signal LO. The buffer amplifier 11 is disposed between the local oscillator 5 and the mixer 6. The mode switcher 16 switches at least between a standby mode in which power is supplied to the local oscillator 5 and no power is supplied to the buffer amplifier 11 and a reception mode in which power is supplied to both the local oscillator 5 and the buffer amplifier 11.

An electric steering wheel lock device includes a control circuit that starts and stops supplying power to a motor that actuates a lock mechanism to lock and unlock a movable member of a vehicle steering mechanism. The control circuit changes contact states of first and second relays to switch a supplying direction of the power. A drive restriction unit stops and starts supplying power to a drive circuit for the motor. The control circuit changes contact states of the first and second relays when the drive restriction unit stops supplying power to the drive circuit.

An output converter includes a DCDC conversion section, a secondary side voltage/current monitoring section detecting a power from the DCDC conversion section, a maximum operation point control section determining what voltage is to be set by the DCDC conversion section so that the power detected by the secondary side voltage/current monitoring section is maximum, a DCDC short-circuit switch via which a current from a module bypasses the DCDC conversion section to outside, a primary side voltage/current monitoring section measuring the current from the module, a module short-circuit switch switching between a state where a secondary side cathode and a secondary side anode are short-circuited and a state where they are not short-circuited, the maximum operation point control section causing the DCDC short-circuit switch and the module short-circuit switch to switch.

A device and method are provided for saving power and electricity in a charging device such for external power supplies and battery chargers having a primary circuit and a secondary circuit where a switch is located in the primary circuit and a current sensing device in the secondary circuit to sense when there is a drop in current in the secondary circuit or no current in the secondary circuit because the load or a cell phone is charged and when this occurs the switch in the primary circuit is opened and the primary circuit no longer draws power from the source of power until the switch in the primary circuit is closed by activation of a user of the charging device.

A communication system has a first communication device, and a second communication device that conducts wireless communication the first communication device. The first communication device has a first transmitter that transmits a signal to the second communication device while modulating the signal, and a first transmission controller that controls the first transmitter. The second communication device has a first receiver that receives the signal from the first communication device and demodulates the received signal. The first transmission controller performs control so as to change a modulation method in midstream when a predetermined first signal is modulated and transmitted. The first receiver changes a demodulation method according to the change of the modulation method of the first signal in midstream when the first signal is received and demodulated.

A power control device for an electronic device includes a power switching unit for switching to output a dc power source to a load of the electronic device according to a power switching signal, a switching detection unit for responding a power switching status to generate a switching detection signal, a status latch module for generating the power switching signal according to the switching detection signal, a first status signal and a second status signal, and a logic unit for generating the first status signal and the second status signal for the status latch module according to the power switching signal, such that the status latch module latches the first status signal and the second status signal.

The switch device includes a control switch that turns on/off an electrical connection between an apparatus and the power supply, a condition judging circuit that judges conditions of driving the control switch, an electric wave reception circuit that receives an electric wave, and a power supply circuit that generates power from the electric wave received by the electric wave reception circuit. An electric wave transmission device that transmits an electric wave for making the switch device operate is arranged in a space, whereby the electric wave can be received by the electric wave reception device in the specific space. The switch device controls the control switch to be turned off/on when the electric wave is received. Alternatively, when the electric wave is not received, the switch device turns on/off the control switch.

A mounting apparatus includes a supporting board, a first adjusting member including a rotating board and a fixing plate, a second adjusting member to install a display device. The rotating board includes a tab, is mounted on the supporting board, and is rotatable about an axis perpendicular to the supporting board. The second adjusting member is mounted to the fixing plate and is rotatable about an axis perpendicular to the fixing plate. A first sliding block is slidably mounted to the supporting board. A second sliding block is slidably mounted to the rotating plate. The first and second sliding blocks each define a slanted groove. A pin protrudes from each of the tab and the second adjusting member to be slidably received in the slanted grooves. The first sliding block is slid to rotate the first adjusting member, the second sliding blocks is slid to rotate the second adjusting members.

A monitor fixing mechanism for fixing a monitor is disclosed. The monitor fixing structure includes a pivot plate and a support member. The pivot plate is detachably connected to the support plate so as to pivot the monitor relative to a stand. The support member includes a plate, at least one lateral guiding structure disposed on the plate for laterally constraining movement of the pivot plate as the pivot plate is sliding into the plate in a first direction, and at least one stopping structure disposed on the plate for stopping an end of the pivot plate as the pivot plate has slid into the plate in the first direction completely. The monitor fixing mechanism further includes a fastening module for fastening the pivot plate on the support member as the pivot plate has slid into the plate in the first direction completely.

A mounting apparatus for a solid state disk includes a bracket and a latching module. The bracket includes a connecting pole and a supporting member mounted to the connecting pole. The latching module is installed to the supporting member, and comprises a latching member. The supporting member includes a position pole mounted to the connecting pole and a supporting bar perpendicularly extending out from the position pole. The position pole defines a latching slot facing the supporting bar for positioning an end of the solid state disk. The supporting bar defines a guiding slot facing the latching slot for receiving a side of the solid state disk. The latching member is to latch onto the solid state disk.

A portable electronic device includes an electronic module and an electronic module fixing structure. The electronic module fixing structure includes a main body, a sliding component, a rod and an elastic component connected between the main body and the sliding component. The main body has a track with a positioning portion. The sliding component is slidably disposed on the main body. The rod is rotatably connected with the sliding component. An end of the rod is adapted to move along the track. When the end is located at the positioning portion, the end and the positioning portion are interfered with each other to position the sliding component. When the electronic module pushes the sliding component, the rod is rotated to drive the end to move away from the positioning portion, and the sliding component pushes the electronic module away from the main body through elastic force of the elastic component.

An electronic device may be provided with a printed circuit board having padded through-holes. The padded through-holes may be formed from openings in a printed circuit board substrate and elastomeric members in the openings. The elastomeric members may be conductive elastomeric members such as electrically or thermally conductive elastomeric members. The printed circuit board may be secured within a housing for the electronic device using engagement members that extend through padded through-holes. The engagement members may engage with the housing or with additional engagement members that are attached to the housing. The electronic device may include a cowling structure formed over electronic components on a surface of the printed circuit board. The cowling structure may be secured to the printed circuit board using attachment members that engage with the engagement members in the padded through-holes.

Disclosed herein is a thin film type chip device, including: a plurality of unit circuit structures laminated on a substrate; and an adhesive layer adhering the unit circuit structures to each other.

Disclosed herein is a display device including a main board part configured to have a display area including drive wiring and have a display panel disposed in the display area; and an auxiliary board part configured to be monolithic with the main board part and have extraction wiring from the drive wiring.

In a display device (100), a row of protruding electrodes (115) and a row of protruding electrodes (116) are formed on the connecting surface of a terminal section (112), the row of the protruding electrodes (116) is disposed between the row of the protruding electrodes (115) and a display section (111), one end of a flexible printed board (150) is connected to the row of the protruding electrodes (115), one end of a flexible printed board (160) is connected to the row of the protruding electrodes (116), the row of the protruding electrodes (115) is adjacent to the row of the protruding electrodes (116), and the one end of the flexible printed board (150) and the one end of the flexible printed board (160) are opposed to each other.

A mounting structure of a flexible printed circuit board and a sliding-type electronic device is provided by which a too large increase in thickness of devices can be avoided and a pair of housings can be slid relatively in a bending and slanting direction. In the mounting structure, an upper housing 12 and a lower housing 22 coupled in a freely slidable manner are electrically connected to each other by a flexible printed circuit board folded back to be routed between slide facing surfaces 12b and 22a of both the housings and the height of a side wall surface 12c and 22c of the upper housing and lower housing changes in a bending manner along the direction of freely sliding and, in the slide facing surfaces of the upper housing and lower housing, concave space portions 15 and 25 to accommodate the change in curvature and in position of a folding-back portion 31a caused by sliding motion between the upper housing and lower housing are disposed.

A semiconductor device effectively suppress the problem of mutual interaction occurring between an inductor element and wires positioned above the inductor element formed over the same chip. A semiconductor device includes a semiconductor substrate and a multi-wiring layer formed overlying that semiconductor substrate, and in which the multi-wiring layer includes: the inductor element and three successive wires and a fourth wire formed above the inductor element; and two shielded conductors at a fixed voltage potential and covering the inductor element as seen from a flat view, and formed between the inductor element and three successive wires and a fourth wire formed above the inductor element.

A lightweight radio/CD player for vehicular application is virtually “fastenerless” and includes a case and frontal interface formed of polymer based material that is molded to provide details to accept audio devices such as playback mechanisms (if desired) and radio receivers, as well as the circuit boards required for electrical control and display. The case and frontal interface are of composite structure, including an insert molded electrically conductive wire mesh screen that has been pre-formed to contour with the molding operation. The wire mesh provides EMC, RFI, BCI and ESD shielding and grounding of the circuit boards via exposed wire mesh pads and adjacent ground clips. The major components and subassemblies self-interconnect by integral guide and connection features effecting “slide lock” and “snap lock” self-interconnection. The major components and subassemblies self-ground by establishing an interference fit with exposed, resilient, embossed portions of wire mesh.

A new type of portable USB mass storage gadget is disclosed which provides the user with upgradeable high speed mass storage and processing for use with portable computer appliances such as smart phones and tablets as well as standard desk top computers and laptops. Various modifications to the embodiment referred to as a UDRIVE are disclosed including a battery option, wireless connectivity, security, and additional internal electronics and external interfaces that allow processing of the data stored or sent to the portable gadget.

The present invention is directed to a circuit interrupting device including an actuator that provides an actuator stimulus upon the occurrence of the fault actuation signal. A circuit interrupter is positioned to electrically disconnect the first, second and third electrical conductors from each other upon the occurrence of the actuator stimulus. An automated test circuit is coupled to the circuit interrupting assembly. The automated test circuit is configured to automatically produce the simulated fault condition during a predetermined portion of an AC line cycle to determine whether the fault detection assembly is operational such that the fault detection assembly provides a fault detection signal without the circuit interrupter electrically disconnecting the first, second and third electrical conductors from each other. The automated test circuit is further configured to provide a device failure mode signal such that a plurality of the first, second or third electrical conductors are disconnected from each other if the fault detection signal is not detected within a predetermined time frame.

A brake device can prevent deterioration of braking force by applying a predetermined pressure in the drive hydraulic pressure chamber even when an electric system failure occurs. The brake device includes a stroke simulator portion, regulator, a first passage connecting the accumulator and the high pressure port of the regulator, a second passage connecting the reservoir tank and the low pressure port of the regulator, a third passage connecting the stroke simulator portion and the pilot pressure input port of the regulator, a fourth passage connecting the drive hydraulic pressure chamber and the output port of the regulator and a fifth passage connecting the accumulator and the drive hydraulic pressure chamber bypassing the high pressure port. The normally open type pressure decrease control valve is provided in the second passage or in the fourth passage whereas the normally closed pressure increase control valve is provided in the fifth passage.

A brake fade determination device determines whether a fade state of a brake device that brakes a wheel of a vehicle is occurring on the basis of the deceleration of the vehicle and the slip amount of the wheel. A braking system includes: the brake device that is able to adjust a braking force that acts on the wheel of the vehicle; and a controller that controls the braking force to control the slip condition of the wheel. The controller determines whether a fade state of the brake device is occurring on the basis of the deceleration of the vehicle and the slip amount of the wheel, and adjusts the amount of increase or decrease in braking force on the basis of whether the fade state is occurring.

In a vehicle brake device, a port is provided at a hydraulic chamber of a master cylinder and communicates with a reservoir tank. A piston movable in the hydraulic chamber for closing the port is provided with at least one piston-side port that faces on the port when at a first position. When a brake pedal is stepped on from a retracted state to move the piston from the first position to a second position spaced from the first position by a predetermined distance, the hydraulic chamber is blocked from the communication with the reservoir tank. The at least one piston-side port is provided therein with an orifice, so that the hydraulic pressure in the hydraulic chamber is raised at the time of a quick stepping of the brake pedal but is allowed to flow to the reservoir tank without being raised at the time of a non-quick stepping.