178results about How to "Avoid thermal damage" patented technology

A system for treating an abnormal vertebral body such as a compression fracture. In an exemplary embodiment, the system includes a biocompatible flow-through implant structure configured with a three-dimensional interior web that defines flow openings therein for cooperating with a two-part hardenable bone cement. The flow-through structure is capable of compacted and extended shapes and in one embodiment provides a gradient in flow openings for controlling flow parameters of a bone cement injected under high pressure into the interior thereof. The flow-through implant structure is configured for transducing cement injection forces into a selected direction for moving apart cortical endplates of a vertebra to reduce a fracture. In one embodiment, the flow-through implant structure is coupled to an Rf source for applying Rf energy to a two-part bone cement to accelerate curing of the cement to thereby allow on-demand alterations of cement viscosity. The Rf system allows for control of bone cement polymerization globally or regionally to prevent cement extravasion and to direct forces applied to a vertebra to reduce a fracture.

System and method for non-invasive lysis of sub-dermal tissue by means of focused ultrasonic energy, the system comprising: a source of ultrasonic energy adapted to operate in continuous wave mode and to focus ultrasonic energy in a focal zone within the sub-dermal tissue, the ultrasonic energy being adapted to induce tissue cavitation in the focal zone; means for continuous displacement of the source over the skin surface; and means for determining a safe speed for the displacement, the safe speed allowing to avoid thermal tissue damage. The source of ultrasonic energy is accommodated in a hand-held applicator including a wheeled traction system powered by an electric drive.

The object of the present invention is to provide a laser irradiation apparatus being able to enlarge the beam spot to a large degree compared with that of the CW laser, to suppress the thermal damage to the glass substrate, and to form an aggregation of crystal grains including a single crystal extending long in a scanning direction by growing the crystal continuously in the scanning direction. The laser irradiation of the present invention comprises a pulsed laser oscillator, a non-linear optical element for converting the wavelength of the laser light emitted from the pulsed laser oscillator, and an optical system for condensing the laser light whose wavelength is converted on a semiconductor film, wherein the pulsed laser oscillator has a repetition rate in the range of 10 MHz to 100 GHz.

A method of endovenous laser treatment in disclosed. An introducer sheath 40 is introduced into a vein and an optical fiber 12 is introduced through the introducer sheath until a first marking 45 on the optical fiber 12 indicates that the distal end of the optical fiber 12 is substantially in alignment with the distal end of the introducer sheath 40. The introducer sheath 40 is then withdrawn relative to the optical fiber 12 until a second marking 46 on the optical fiber 12 indicates that the distal end of the optical fiber 12 extends a predetermined distance beyond the distal end of said introducer sheath 40. Laser radiation is passed down the optical fiber 12 so that laser radiation is delivered to the inner wall of the vein and the introducer sheath 40 together with the optical fiber 12 are withdrawn a certain distance along the vein.

A battery protective device that protects against battery damage and semiconductor destruction from overdischarge and overcharge of the battery. Resistance across switching elements is controllable to prevent current leakage through parasitic dipole elements in the integrated circuit. Current is detected with an overdischarge detecting circuit and an overcharge detecting circuit. Direction of the current to / from the battery is detected by discharge overcurrent and charge overcurrent detecting circuits. Switching discharge FETs and charge FETs are enabled as independently controlled, ON-OFF parallel switching elements, interposed in series in the charge / discharge current path of the battery. Only a part of the discharge or charge switching FETs can be turned ON and OFF for accurate current control in accordance with the detected current and its direction.

The present invention provides an apparatus and a method for accurately detecting abnormal conditions of a motor. A ΔTc / Tj detector detects a difference (ΔTc) between an environment temperature and a temperature of a field-effect transistor (FET) which turns on and off electric power supplied to a DC motor. A diagnosis control unit detects abnormal conditions such as a motor lock and a short circuit of the DC motor based upon the obtained difference. When the motor lock has been detected, the diagnosis control unit controls a pulse width modulation (PWM) control unit and a PWM oscillator (PWMOSC) and makes a frequency and duty cycle of a PWM signal lower. When the short circuit has been detected, the diagnosis control unit controls a gate driver and turns off the FET.

A partition partitions off a motor chamber and a pump chamber, through which a cooling water flows, a substantially cylindrical-cup shaped rotor is arranged in the pump chamber, a circuit board is disposed in the motor chamber to be in parallel to an annular-shaped end surface of the rotor, a magnetism detecting element is mounted on that portion of the circuit board, which faces a magnet portion of the rotor, and exothermic electronic parts are mounted on the remaining portion of the circuit board. The magnetism detecting element and the exothermic electronic parts, respectively, are arranged in opposite positions in a substantially annular-shaped area of the circuit board, which faces the annular-shaped end surface of the rotor, and a thickness of an annular-shaped wall portion of the partition facing the annular-shaped end surface of the rotor is made thin in a portion adjacent to the exothermic electronic parts on condition that an annular-shaped surface of the annular-shaped wall portion on a side of the annular-shaped end surface of the rotor is a non-inclined flat surface.

An ultrasonic transducer is disclosed, which includes one or a plurality of ultrasonic emitting units. Wavefronts of the ultrasonic waves emitted by the one or the plurality of ultrasonic emitting units are sphere surfaces with uniform radius, and the one or the plurality of ultrasonic emitting units can reflect ultrasound. The one ultrasonic emitting unit is configured to form a spherical resonant cavity, or the plurality of ultrasonic emitting units are configured to form a spherical resonant cavity collectively. An internal cavity of the spherical resonant cavity has a spherical shell shape or a cross-sectional spherical shell shape with a spherical center therein. The ultrasonic waves emitted by the one or the plurality of ultrasonic emitting units are focused on an area in which the spherical center of the spherical resonant cavity is located. The ultrasonic transducer not only can be provided with a large ultrasonic emitting area and a great focusing gain that render the energy of the ultrasonic focus enhanced dramatically, but also can be free from the influence of work frequency of an ultrasonic source.

The present invention provides an apparatus and a method for accurately detecting abnormal conditions of a motor. A ΔTc / Tj detector detects a difference (ΔTc) between an environment temperature and a temperature of a field-effect transistor (FET) which turns on and off electric power supplied to a DC motor. A diagnosis control unit detects abnormal conditions such as a motor lock and a short circuit of the DC motor based upon the obtained difference. When the motor lock has been detected, the diagnosis control unit controls a pulse width modulation (PWM) control unit and a PWM oscillator (PWMOSC) and makes a frequency and duty cycle of a PWM signal lower. When the short circuit has been detected, the diagnosis control unit controls a gate driver and turns off the FET.

A high-frequency semiconductor device, wherein on one surface of a semiconductor substrate, a first insulating layer, an undoped epitaxial polysilicon layer in a state of column crystal, a second insulating layer, and a semiconductor layer are formed in order from a side of the one surface, and a high-frequency transistor is formed in a location of the semiconductor layer facing the undoped epitaxial polysilicon layer with the second insulating layer in between.

A lead-free solder alloy which has a relatively low melting temperature and which is suitable for soldering electronic devices consists essentially of from 5 to 9 mass % of Zn, from 2 to 15 mass % of Bi, optionally from 0.001 to 1 mass % of P or from 0.001 to 0.1 mass % of Ge, and a balance of Sn. The solder alloy has a liquidus temperature of at most 220° C.

The present invention is a system and method for laser-assisted singulation of light emitting electronic devices manufactured on a substrate, having a processing surface and a depth extending from the processing surface. It includes providing a laser processing system having a picosecond laser having controllable parameters; controlling the laser parameters to form light pulses from the picosecond laser, to form a modified region having a depth which spans about 50% of the depth and substantially including the processing surface of the substrate and having a width less than about 5% of the region depth; and, singulating the substrate by applying mechanical stress to the substrate thereby cleaving the substrate into said light emitting electronic devices having sidewalls formed at least partially in cooperation with the linear modified regions.

A battery protective device that protects against battery damage and semiconductor destruction from overdischarge and overcharge of the battery. Resistance across switching elements is controllable to prevent current leakage through parasitic dipole elements in the integrated circuit. Current is detected with an overdischarge detecting circuit and an overcharge detecting circuit. Direction of the current to / from the battery is detected by discharge overcurrent and charge overcurrent detecting circuits. Switching discharge FETs and charge FETs are enabled as independently controlled, ON-OFF parallel switching elements, interposed in series in the charge / discharge current path of the battery. Only a part of the discharge or charge switching FETs can be turned ON and OFF for accurate current control in accordance with the detected current and its direction.

A high frequency switch circuit according to the present invention includes a control-voltage-generating circuit. The control-voltage-generating circuit includes a depletion type field-effect transistor, an external-control-signal-input terminal, an internal-control-voltage-output terminal, and a power-receiving terminal of the control-voltage-generating circuit. The field-effect transistor has a grounded gate, a source connected to the external-control-signal-input terminal, and a drain connected to the power-receiving terminal. The internal-control-voltage-output terminal is connected to an electrical connection path between the drain of the field-effect transistor and the power-receiving terminal.

The invention discloses a projector support frame for temporary and quick installation at a conference site, which includes a projector fixing plate, and is characterized in that, a fixed splint is symmetrically connected to the inside of the projector fixing plate through a telescopic spring, and the bottom of the fixed splint is connected by a sliding The block is slidingly connected with the chute on the projector fixing plate, the bottom of the projector fixing plate is connected with the rotating tray through the lifting bracket, and the bottom of the rotating tray is screw connected with the bottom supporting feet, and the fixing splint is embedded with a pair of projection The heat dissipation fan used for heat dissipation of the instrument, the inner surface of the fixed splint is equidistantly connected with supporting rubber columns, and the inner surface of the lifting bracket is embedded with a spiral lifting rod. In the present invention, firstly, the projector can be fixed automatically by providing the telescopic spring and the fixing splint, without fixing with mounting screws, which makes it more convenient to fix the projector with the projector support frame for temporary quick installation at the meeting site.

An oxide film-forming apparatus, comprising: a process chamber for disposing an electronic device substrate at a predetermined position; water vapor supply means for supplying water vapor into the process chamber; and plasma exciting means for activating the water vapor with plasma, whereby the surface of the electronic device substrate can be irradiated with the plasma based on the water vapor.

The invention discloses a split electric wheel system with a thin excitation-free electromagnetic parking braking device. The split electric wheel system is applied to a wheel hub motor, aims to solve the problem of complex structure of the existing electric wheel vehicle braking system, and comprises a wheel, the wheel hub motor, a brake disc, a motor shell crossover flange, an electromagnetic brake, a suspension beam end part and a sleeve, wherein the suspension beam end part, the electromagnetic brake, the motor shell crossover flange, the brake disc, the wheel hub motor and the wheel are sleeved on a motor shaft in sequence, the sleeve is hollowly sleeved on the motor shaft and is located between the motor shaft and the motor shell crossover flange, one end of the sleeve is in contact with the flange of the suspension beam end part, the other end of the sleeve is in contact with the shaft shoulder of the motor shaft, the wheel and a shell on the outer side of the wheel hub motor are fixedly connected by rim bolts, the motor shell crossover flange, the brake disc and a shell on the inner side of the wheel hub motor are fixedly connected in sequence by brake disc bolts, one end of the electromagnetic brake is in splined joint with the motor shell crossover flange, and the other end of the electromagnetic brake is sleeved on the flange of the suspension beam end part.

The present invention includes a first step of forming a nitride semiconductor layer by metal organic chemical vapor deposition by using a first carrier gas containing a nitrogen carrier gas and a hydrogen carrier gas of a flow quantity larger than that of the nitrogen carrier gas to thereby supply a raw material containing Mg and a Group V raw material containing N, and a second step of lowering a temperature by using a second carrier gas to which a material containing N is added, and hence solves the problems.

The invention discloses a plasma treatment device for polymer material surface modification. The plasma treatment device comprises a direct-current power supply and a reaction chamber, wherein a metal anode and a liquid cathode which are connected with the direct-current power supply are arranged in the reaction chamber correspondingly; a liquid-medium container used for containing the liquid cathode is arranged in the reaction chamber; the metal anode is arranged right above a liquid level of the liquid cathode; and the reaction chamber is internally provided with a gas inlet system for circulating gas media. The invention further discloses a plasma treatment method for the polymer material surface modification. The plasma treatment method comprises the following steps of 1) placing a polymer material to be treated below the liquid level of the liquid cathode; 2) starting the gas inlet system to conduct gas inlet on the reaction chamber; 3) turning on the direct-current power supply, adjusting a space between the metal anode and the liquid cathode to allow discharge plasma to generate between the metal anode and the liquid cathode, and beginning to conduct plasma treatment on the polymer material; and 4) turning off the direct-current power supply after the treatment, and taking out the polymer material.

A fixing apparatus includes: a fixing roller and a pressure roller which transport a recording paper while sandwiching the recording paper P therebetween so that an unfixed toner image formed on the recording paper is fixed thereon under heat and pressure; two support rollers; an endless belt which is set over the support rollers and comes into contact with a surface of the fixing roller; and heater lamps which are provided respectively inside the support rollers. A fixing apparatus satisfies a relationship indicated by (C2+C3) / C1≧2 where C1 is a heat capacity of each of the heater lamps, C2 is a heat capacity of each of the support rollers, and C3 is a heat capacity of the endless belt in each of areas where the endless belt is in contact with the support rollers. This realizes an external belt heat fixing apparatus which suppresses (a) heat damage to the endless belt and the surface of the fixing member and (b) unevenness of an image.

A flammable-gas led-out pipe (5) has a terminal end portion (5a) disposed in an exhaust-gas route (7) and a metal cylinder (10) is arranged at the terminal end portion (5a) of the flammable-gas led-out pipe (5). An oxidation catalyst (8) is disposed within the metal cylinder (10). On an upstream side of the oxidation catalyst (8), an air-supply passage (12) is opened to provide an outlet (12a) and the flammable gas (4) merges with supplied air (13). The flammable gas (4) is burnt with the oxidation catalyst (8) to produce catalyst-combustion heat, which is radiated from an outer peripheral surface of the metal cylinder (10) into the exhaust gas (9) in the exhaust-gas route (7) and the exhaust gas (9) heated by this heat-radiation is mixed with the flammable gas (4) that has passed through the oxidation catalyst (8).

The invention belongs to the technical field of controlling air conditioners, and provides an air conditioner, a method and a device for refrigerant pipeline pressure monitor and system control thereof. In the running process of the air conditioner, an output signal of a high pressure switch or output signals of the high pressure switch and a low pressure switch are detected based on a working state of the air conditioner; when it is detected that the high pressure switch continuously outputs a high pressure overpressure signal within a preset time interval and / or the lower pressure switch continuously outputs a low pressure overpressure signal within the preset time interval, a compressor is controlled to stop working, and the compressor is controlled to start working again after a preset period, accordingly controlling the compressor to stop working for the preset period and to start working again when the refrigerant pipeline is overpressured, thereby preventing the compressor from being damaged by heating, increasing the system running reliability of the air conditioner, and reducing the failure rate of the air conditioner.

A method of manufacturing a semiconductor device includes providing resin on at least a partial area on a first semiconductor package and coupling a second semiconductor package to the first semiconductor package electrically while the resin maintains its fluidity.

Vacuum concentrator, comprising a vacuum chamber with a closure which may be sealed in an airtight manner, a centrifuge rotor arranged in the vacuum chamber with at least one receiver for at least one vessel for samples to be dried, a drive motor arranged outside the vacuum chamber for driving the centrifuge rotor, a vacuum pump connected to the vacuum chamber, a tempering device associated with the vacuum chamber for tempering the at least one sample in the vacuum chamber, a pressure sensor associated with the vacuum chamber for detecting the pressure inside the vacuum chamber and an electrical control and evaluating device which is connected to the drive motor, the vacuum pump, the tempering device and the pressure sensor, for detecting the end point of the vacuum concentration by means of the pressures detected by the pressure sensor in the vacuum chamber and terminating the vacuum concentration when the end point is determined.

The invention belongs to the technical field of thermal protection systems, and discloses a thermal protection plate. The thermal protection plate sequentially comprises a cover plate, a heat insulation layer and an inner panel from outside to inside, a bolt is arranged in the direction from the cover plate to the inner panel in a penetrating mode, and the tail end of the bolt extends out of the inner wall of the inner panel and is fixed through a nut; an aerogel heat shield is arranged on the periphery of the positions, where the bolt and the nut are located, of the inner wall of the inner panel; the cover plate is a carbon fiber reinforced ceramic based composite material cover plate; the heat insulation layer is an aerogel felt layer; the inner panel is a resin-based composite materialinner panel; the bolt is a carbon fiber reinforced ceramic based composite material bolt, and the nut is a carbon fiber reinforced ceramic matrix composite material nut. The thermal protection plate is excellent in performance and can meet the requirement that the surface temperature of an aircraft is within the range of 900 DEG C or below.

A rotating electric machine in which, in welding a stator core and a case together, thermal damage to an insulation film due to the welding is suppressed. The rotating electric machine has the case (10) and the stator core (20). The stator core (20) has teeth (21) and a back yoke (22). Recesses (221) open to the side opposite a rotating shaft (P) are arranged in the outer peripheral surface (220)of the back yoke (22) such that each of the recesses (221) corresponds to each of the teeth (21). The case (10) and the stator core (20) are welded and fixed together at a position between each of tworecesses (221) adjacent to each other in the direction of a circumference about the rotating axis (P). The minimum distance between the root and recess (221) of each of the teeth (21) is smaller thanthe width in the radial direction of the back yoke.

An IDT electrode 3 , and an input electrode section 5 and an output electrode section 6 each connecting with the IDT electrode 3 are formed in a filter region on one main surface of a piezoelectric substrate 2 , and a semiconductor layer 22 is formed on the other main surface opposite to the one main surface of the piezoelectric substrate 2 . The semiconductor layer 22 makes it possible to prevent pyroelectric destruction in the device manufacturing process as well as to prevent out-of-band attenuation characteristics from being degraded.