33results about How to "Eliminate defect and drawback" patented technology

In a motorcycle provided with an antilock brake system, a front fork supporting a front wheel of a motorcycle is supported to be rotatable by a head pipe which is located at the front end portion of a body frame of a motorcycle, a handle-bar is secured to an upper end portion of the head pipe, master cylinders attached to the handle-bar are connected to hydraulic wheel brakes, respectively, via brake pipes. An antilock brake system includes an ABS-unit for antilock control disposed in an intermediate portion of the brake pipes. The ABS-unit is disposed immediately behind the head pipe and between a pair of body frame components disposed on both lateral sides of the motorcycle body and extending, from the head pipe, obliquely downward and backward, while extending outward in directions opposite to each other in the width direction of the motorcycle body.

A fuel cell system includes an ion-exchange filter, which is provided with a cartridge which is filled up with an ion-exchange resin. The cartridge includes one of a pressure-loss emphasizing type cartridge and an ion-exchange efficiency emphasizing type cartridge, which are selectively exchanged with each other, for a common case of the ion-exchange filter. The ion-exchange efficiency emphasizing type cartridge is one for an ion-exchange filter having a high pressure loss and high ion-exchange efficiency and, on the other hand, the pressure-loss emphasizing type cartridge is one for an ion-exchange filter having a pressure loss lower than that of the former ion-exchange filter and an ion-exchange efficiency lower than that of the former ion-exchange filter.

A centrifugal impeller particularly for a turbo-charger includes a circular disc member, a boss portion formed at a central portion of the disc member and having a central through hole into which a rotational shaft is inserted, an impeller blade integrally formed on one surface side of the disc member, and a ring-shaped rib member arranged on the other surface side of the disc member so as to be coaxial with a center axis of the boss portion. A thickness reduced portion is formed to the disc member so as to have a thickness smaller than that of another portion of the disc member, and the thickness reduced portion is arranged adjacent to the rib member.

A fluid machinery includes a helical mechanism connected to a driving mechanism, which is driven via a crank shaft. The helical mechanism includes a cylinder defining an inner space, a roller disposed inside the cylinder so as to be rotated in an eccentric manner, the roller being formed with a plurality of helical grooves on an outer peripheral surface, and at least one seal ring groove between respective helical grooves, a plurality of helical blades fitted to the helical grooves so as to be disposed between as inner peripheral surface of the cylinder and the outer peripheral surface of the roller, and at least one seal ring fitted to the seal ring groove so as to tightly seal the inner space as a plurality of operation sections. Furthermore, a plurality of suction ports and a plurality of drain ports, associated with respective operation sections, communicate with each other.

A centrifugal impeller particularly for a turbo-charger includes a circular disc member, a boss portion formed at a central portion of the disc member and having a central through hole into which a rotational shaft is inserted, an impeller blade integrally formed on one surface side of the disc member, and a ring-shaped rib member arranged on the other surface side of the disc member so as to be coaxial with a center axis of the boss portion. A thickness reduced portion is formed to the disc member so as to have a thickness smaller than that of another portion of the disc member, and the thickness reduced portion is arranged adjacent to the rib member.

In a steam valve, a strainer is arranged between a valve body and a valve casing in which the valve body is accommodated, and a screen assembly is mounted on an outer peripheral portion of the strainer. The screen assembly includes a temporary screen unit and a permanent screen unit which is arranged inside the temporary screen unit. Each of the screen units is a substantially cylindrical structure made of a plate formed with perforations.

An internal combustion engine includes an engine control unit for setting a ratio of fuel injection quantity of both the injectors. The engine control unit includes a memory storing four sheets of ignition timing maps, with reference to which the maximum torque generation timing and knocking limit torque generation timing, at the direct injection injector (100%) and port fuel injection injector (100%), are calculated. The engine control unit further operates to calculate a correction amount from correction amount map, and calculates first interpolation value of the maximum torque generation timing at the above 100% operation time of both the injectors and second interpolation value of the knocking limit torque generation timing at the above 100% operation time of both the injectors. A value in which the correction amount is added to either one of the above first and second interpolation value on a delay angle side is calculated as ignition timing.

A plastic as a material to be treated and an additive such as unsaturated fatty acid oil are mixed, and the mixture is heated in a pyrolysis tank at a temperature of 300° C. to 450° C. by a heating member to thereby thermally decompose the mixture. A gas component produced during the heating process is then removed and a pyrolysate is thus produced.

An apparatus for correcting deformation of a gas turbine blade includes a stationary die fixed to a backside of a tip shroud of a gas turbine blade to hold a back surface thereof and a pressing die pressing a front surface of the tip shroud so as to press the tip shroud of the blade between the pressing die and the stationary. A hydraulic drive mechanism including pressure generator is arranged for pressing the pressing die against the tip shroud held by the stationary die and a control device is operatively connected to the hydraulic drive mechanism so as to set and indicate a driving condition on a basis of deformation correction data preliminarily stored in the control device.

A modular suspension system for automobiles and trucks. The present invention relates to a suspension system which is both modular in design and specifically manufactured for high performance wheeled vehicles. This system has multiple modular parts which enable the system to function in various makes and models of vehicles. The modular aspects of this system also enable the cradle to be removable so that the engine and transmission of the vehicle can be easily reached. The modular aspects also allow this system to be set-up with a traditional shock configuration or with a rocker set-up shock system.

There is provided an internal combustion engine, in which a fuel pressure is changed and a fuel injection quantity is controlled in accordance with an engine operating condition when fuel is injected. The internal combustion engine comprises a cylinder, a direct injection injector arranged so as to supply the fuel to the cylinder, a detection unit for detecting an operating condition of the internal combustion engine, and a control unit for controlling the fuel injection. The control unit includes two maps describing tow factors of a fuel injection characteristic coefficient and an invalid injection period with respect to the fuel pressure of the direct injection injector, a first calculating section for calculating a required fuel injection quantity necessary for injecting the fuel into the cylinder in accordance with an information from the detection unit, and a second calculating section for calculating a required fuel injection period in accordance with the required fuel injection quantity and the two factors of the fuel injection characteristic coefficient and the invalid injection period with respect to the fuel pressure both of which are obtained from the two maps, a controlling section for controlling the fuel injection such that the fuel is injected for the required fuel injection period (T) through the direct injection injector.

A socket for electrical parts includes driving mechanisms that move pressing members from a depressed position to a retired position when an operating member is vertically shifted. The operating member includes racks each of which has rack gears in the vertical direction. Follower gears engageable with the rack gears are also provided. The follower gears have different distances from the rotational pivot to the pitch circle. When the operating member is depressed, the follower gear with a longer distance from the rotational pivot to the pitch circle is engaged with one of the rack gears.

A slide rail unit for guiding an object to be pulled out, such as drawer, from a body, such as furniture or desk, in which the object is slidably accommodated includes a body side rail provided for the body, and an object (i.e., drawer) side rail provided for the object to be pulled out to be slidable relative to the body side rail. The body side rail and the object side rail each has a portion bent in a circular-arc shape so that the object is pulled out along a circular-arc locus.

A material, such as track member for a linear motion guide, having a plurality of rows of portions to be hardened which are thermally influenced on each other, is hardened by emitting laser beams so as to simultaneously irradiate a plurality of rows of portions of the material to be hardened, and moving the laser beams irradiating the rows of portions to be hardened relatively in a longitudinal direction of the portions to be hardened. In this hardening process, the laser beam irradiation is performed such that, in a sectional plane perpendicular to an optical axis of the laser beam, a length of a laser beam irradiation shape in the longitudinal direction of the portion to be hardened is set to be longer than a length thereof in a direction perpendicular to the longitudinal direction.

A slide rail unit for guiding an object to be pulled out, such as drawer, from a body, such as furniture or desk, in which the object is slidably accommodated includes a body side rail provided for the body, and an object (i.e., drawer) side rail provided for the object to be pulled out to be slidable relative to the body side rail. The body side rail and the object side rail each has a portion bent in a circular-arc shape so that the object is pulled out along a circular-arc locus.

A shut-off valve disposed between openings formed to a vacuum chamber includes a casing, a valve body disposed inside the casing and having a shaft rotating around a central axis of the valve body, a drive unit for driving the valve body to rotate the shaft, and an open / close mechanism provided for the shaft for opening and closing each of the openings. The open / close mechanism includes a sheet member mounted to the shaft so as to protrude outward in a radial direction of the shaft to thereby close each of the openings, an urging member urging the sheet member inward or outward in the radial direction of the shaft, and a seal member connected to the sheet member so as to be associated therewith and forming a sealed space between the sheet member and the shaft, which is formed with an air passage communicating with the sealed space.

A hydraulic pressure generating apparatus includes a hydraulic oil feed line for feeding hydraulic oil with high pressure from an oil tank to a hydraulic pressure control system of a generator by an oil feeding pump unit, a hydraulic oil return line for returning drain oil from the hydraulic pressure control system to the oil tank, and a circulation line for circulating and purifying the hydraulic oil of the oil tank by a circulating pump unit. In such apparatus, the hydraulic oil is flame resistant hydraulic oil which is hardly deteriorated by direct heating, and the flame resistant hydraulic oil is heated by a heater disposed in the oil tank.

A contact pin for an IC socket. The contact pin is formed from a metal material having conductivity and includes an elastic portion that is elastically deformable by a force applied thereto. A contact portion is formed at an end portion of the elastic portion and contacts an IC lead of an IC package. The elastic portion is polished to improve durability.

A seal for a ball screw is provided with a foreign material removing member having a hole of a shape corresponding to a sectional shape of a ball screw shaft taken perpendicularly to an axis thereof to prevent a foreign material from invading from an outside of a ball screw nut and a seal member having a hole of a shape corresponding to a sectional shape of the ball screw shaft to retain a lubricant existing inside the ball screw nut. The foreign material removing member and the seal member are mounted to the ball screw shaft, at each of both the axial ends of the nut, while being overlapped to each other in a state that inner peripheral portions of the foreign material removing member and the seal member contact an outer peripheral surface of the ball screw shaft and the ball rolling groove thereof. The foreign material removing member is disposed outside the seal member in the axial direction of the ball screw nut.

A hydraulic system for driving a control rod drive mechanism includes a control rod drive water pump, a charging line connected to a discharge side of the control rod drive water pump and including a pressure gauge on the discharge side thereof, a purge line connected to the discharge side of the control rod drive water pump for feeding a coolant to a control rod drive mechanism, and a plurality of hydraulic control units connected to the charging line through charging headers and the purge line, each of said hydraulic control units including an accumulator for storing pressurized water using high-pressure gas and a scrum valve through which the accumulator is connected to the control rod drive mechanism. A charging pump is further connected to the charging line so as to independently charge the accumulators with water at a predetermined pressure.

A shut-off valve disposed between openings formed to a vacuum chamber includes a casing, a valve body disposed inside the casing and having a shaft rotating around a central axis of the valve body, a drive unit for driving the valve body to rotate the shaft, and an open / close mechanism provided for the shaft for opening and closing each of the openings. The open / close mechanism includes a sheet member mounted to the shaft so as to protrude outward in a radial direction of the shaft to thereby close each of the openings, an urging member urging the sheet member inward or outward in the radial direction of the shaft, and a seal member connected to the sheet member so as to be associated therewith and forming a sealed space between the sheet member and the shaft, which is formed with an air passage communicating with the sealed space.

A socket for an electrical part has a socket body to which an IC package as an electrical part is accommodated, the socket body being provided with a number of contact pins which are contacted to or separated from solder balls as terminals of the electrical part, a movable member arranged to be movable with respect to the socket body, and lever members mounted to both sides of the socket body to be rotatable. In this structure, when the lever members are rotated, the movable member is moved to displace the contact pins so as to be contacted to or separated from the solder balls of the electrical part, respectively. In such structure, each of the lever members are formed with pressing portion which acts to press a portion of the movable member in accordance with the rotation of the lever members and when the movable member is moved so as to approach a lowermost position thereof by the rotation of the lever member, the pressing portion and the pressed portion achieves surface-to-surface contact to each other.