| DAIDO METAL COMPANY LTD. Patent applications |
| Patent application number | Title | Published |
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| 20120064365 | SLIDE MEMBER - A slide member is disclosed. The slide member includes a bearing alloy layer, a Ni-based intermediate layer provided over the bearing alloy layer, and a Sn-based overlay provided over the Ni-based intermediate layer. The Sn-based overlay comprises at least one layer, the Sn-based overlay including a first layer or region having a sliding surface and a second layer or region placed in contact with the Ni-based intermediate layer. The first layer or region contains Sn and 3 mass % or more of Cu and the second layer or region contains Sn and 8 mass % or less of Cu. | 03-15-2012 |
| 20120064358 | SLIDE MEMBER - A slide member is disclosed. The slide member includes a Cu-based bearing alloy layer; an intermediate layer provided over the Cu-based bearing alloy layer; and a Sn-based overlay provided over the intermediate layer. The intermediate layer consists of one or more materials selected from a group of Ni, Ni alloy, Co, and Co alloy and is thinner than 4 μm. The Sn-based overlay contains Sn and 6 mass % or more of Cu. | 03-15-2012 |
| 20120008889 | SLIDE BEARING FOR CRANKSHAFT OF INTERNAL COMBUSTION ENGINE - There is provided a slide bearing for a crankshaft of an internal combustion engine, having a pair of half bearings combined with each other to form the slide bearing, and a crush relief formed in each end portion region in a circumferential direction of an inner peripheral surface of each half bearing by reducing a bearing wall thickness over an entire width in an axial direction of the half bearing, wherein a relief depth RD which is a reduction amount of the bearing wall thickness of the crush relief is maximum at each end portion in the circumferential direction of the half bearing, and gradually decreases toward a center in the circumferential direction, and the relief depth RD is maximum in a center in an axial direction of the half bearing, and gradually decreases toward both end portions in the axial direction. | 01-12-2012 |
| 20110305410 | HALF BEARING - A half bearing for a crankshaft of an internal combustion engine, which includes crush relieves at both circumferential end portions of an inner circumferential surface of the half bearing, is provided. The half bearing further includes an axial groove at least at a position adjacent to a crush relief on a rear side of a relative rotation direction of the crankshaft, and adjacent to the inner circumferential surface of the half bearing. The axial groove extends along an entire width of the inner circumferential surface of the half bearing. | 12-15-2011 |
| 20110277889 | ALUMINUM-BASED BEARING ALLOY AND PRODUCTION METHOD OF THE SAME - An Al-based bearing alloy containing 1 to 15 mass % of Si is provided. The Al-based bearing alloy includes Si particles, and a total length of circumference of the Si particles observed in an observation field of 37820 μm | 11-17-2011 |
| 20110243486 | SLIDING BEARING FOR INTERNAL COMBUSTION ENGINES - Disclosed is a sliding bearing for supporting a crankshaft journal portion of an internal combustion engine. One of the semi-cylindrical bearings is provided with a circumferential oil groove on its inner circumferential surface, and has two circumferential ends. The circumferential oil groove has an open groove end at at least one of the two circumferential ends, which one is a first circumferential end being directed to the same direction as a relative rotational direction of a crankshaft. The other semi-cylindrical bearing is provided with at least one circumferential local groove on its inner circumferential surface, and has two circumferential ends. The circumferential local groove has an open groove end at one of the two circumferential ends, which one is a second circumferential end being directed to the opposite direction to the relative rotational direction of the crankshaft. The circumferential oil groove and the local circumferential groove are in fluid communication with each other. At a region of the fluid communication, a groove bottom of the local circumferential groove is deviated toward an axis of the sliding bearing from another groove bottom of the circumferential oil groove. An axial groove is formed along a contact interface between the first and second circumferential ends. | 10-06-2011 |
| 20110211781 | SLIDING BEARING USED IN TURBOCHARGER OF INTERNAL COMBUSTION ENGINE - Disclosed is a sliding bearing used in turbochargers of internal combustion engines. It is formed with a copper alloy containing, by mass %, 25 to 45% Zn, 0.3 to 2.0% Si, 1.5 to 6.0% Mn, and the balance being Cu and unavoidable impurities. The sliding bearing has a cylindrical shape for supporting a rotating shaft. Crystallized Mn—Si compounds are dispersed in a matrix of the copper alloy, the compounds extending in an axial direction of the rotating shaft on a sliding surface of the sliding bearing. The crystallized Mn—Si compounds have an average inter-grain distance of 20 to 80 μm. The matrix may contain precipitated Mn—Si compounds as well as the crystallized Mn—Si compounds. | 09-01-2011 |
| 20110206939 | COPPER-BASED SLIDING MATERIAL - Provided is a copper-based sliding material including a steel back-metal layer and a Cu alloy layer. The Cu alloy layer contains, by mass %, 10 to 30% of Bi, 0.5 to 5% of an inorganic compound, and the balance being Cu and inevitable impurities. The Cu alloy layer may further contain 0.5 to 5% of Sn and/or at least one element selected from the group consisting of Ni, Fe, P and Ag in a total amount of 0.1 to 10%. The inorganic compound has an average particle size of 1 to 5 μm and a specific gravity of 70 to 130% relative to the specific gravity of Bi. Bi phase is formed in the Cu alloy layer in an average particle size of 2 to 15 μm, and the Bi phase is dispersed in the Cu alloy layer and isotropic. | 08-25-2011 |
| 20110152140 | SLIDING RESIN COMPOSITION - A sliding resin composition is provided which hardly seizes by decreasing oil repellency of PTFE to prevent discharging of lubricating oil from sliding surface. That is, by using resin composition | 06-23-2011 |
| 20110082059 | SLIDING RESIN COMPOSITION - A sliding resin composition is provided which rapidly forms a transfer adhesion film of PTFE on the surface of a counter member at the initial stage of sliding. That is, in the case of using resin composition | 04-07-2011 |
| 20110058761 | SLIDING BEARING FOR INTERNAL COMBUSTION ENGINE - Disclosed is a sliding bearing for an internal combustion engine for supporting a crankshaft including a pair of semi-cylindrical bearings combined with each other into a cylindrical body. Each of inner circumferential surfaces of the respective semi-cylindrical bearings includes first and second curved surfaces following two kinds of arcs with different curvatures. The first curved surface is in a region including a circumferential central portion of the inner circumferential surface. The second curved surfaces are in remaining two regions of the inner circumferential surface. The circumferential oil groove and the axial groove communicate with each other. The circumferential grooves of the second curved surfaces and the axial groove communicate with each other. The groove bottoms of the circumferential grooves of the second curved surfaces are displaced to a side of the bearing inner circumferential surface from a groove bottom of the axial groove. | 03-10-2011 |
| 20100316313 | CONNECTING ROD BEARING FOR INTERNAL COMBUSTION ENGINES AND CONNECTING ROD BEARING DEVICE - Disclosed is a connecting rod bearing for crankshafts having a pair of semi-cylindrical bearings. Circumferential grooves (CG) on the bearing inner surface extend from each circumferential end toward the circumferential center within a maximum circumferential angle of 45 degrees and divide reduced wall thickness region into two sections. Axial grooves communicating with the CG are provided along abutted ends of the bearings. Circumferential length of the CG is larger than that of the reduced region. Depth of the CG becomes gradually smaller from the end toward the center. Width of the CG is not smaller than one-quarter of a diameter of lubricant-oil outlet of internal lubricant-oil passage in a crankpin and less than the diameter. Cross-sectional area of the CG is larger than that of the axial grooves at a connection portion thereof. | 12-16-2010 |
| 20100316312 | SLIDING BEARING FOR INTERNAL COMBUSTION ENGINE - Disclosed is a sliding bearing for an internal combustion engine which is used as a cylindrical bearing by combining a pair of semi-cylindrical bearings. An axial groove A exists between the circumferential end surface and an opposite circumferential end surface. A circumferential oil groove and the axial groove A communicate with each other, depths of the circumferential oil groove in the communication portion and the axial groove A in the circumferential end surfaces differ from each other, and a groove bottom of the circumferential oil groove is located at a position displaced to a side of the inner circumferential bearing surface from the groove bottom of the axial groove A. A cross-sectional area of the circumferential oil groove in the communication portion is larger than a cross-sectional area of the axial groove A. | 12-16-2010 |
| 20100310896 | ALUMINUM-BASED SLIDING ALLOY AND CASTING APPARATUS FOR THE SAME - An aluminum-based sliding alloy containing 1 to 15 mass % of Si is provided. Si precipitates in the form of particles in an observation field of the aluminum-based sliding alloy. The Si particles have a maximum diameter of 0.01 to 7.5 μm and the total area of Si particles having a diameter of not more than 5.5 μm accounts for not less than 95% of the total area of the Si particles present in the aluminum-based sliding alloy. | 12-09-2010 |
| 20100266869 | SLIDE MEMBER - A slide member including a base material; an intermediate layer consisting of Ag or Ag-based alloy and an additive element of a first quantity formed over the base material; and an overlay comprising Bi or Bi-based alloy and the additive element of a second quantity formed over the intermediate layer, wherein the additive element consists of a low melting point metal, the first quantity being five times or greater than the second quantity. | 10-21-2010 |
| 20100248999 | SLIDE MEMBER - A slide member including a base material; and an overlay that is formed over the base material and that consists of Ag or Ag alloy including crystal planes (hk1) represented by Miller indices; wherein a relative X-ray diffraction intensity of crystal plane (200) to a sum of X-ray diffraction intensities of crystal planes (200), (111), (220), (311), and (222) of the overlay ranges between 1%≦(200)/{(200)+(111)+(220)+(311)+(222)}≦20% and the relative X-ray diffraction intensity of the crystal plane (200) to the X-ray diffraction intensity of the crystal plane (111) ranges between 1%≦(200)/(111)≦30%. | 09-30-2010 |
| 20100239198 | BEARING DEVICE OF COMPRESSOR FOR REFRIGERATOR - The invention provides a bearing device of a compressor for a refrigerator which can widen a clearance between a sliding surface of a bearing and a surface of a crank shaft at a time of starting, while narrowing the clearance between the sliding surface of the bearing and the surface of the crank shaft at a time of a regular operation of the compressor for the refrigerator. A thickness of a resin sliding layer is set in such a manner that a bearing clearance at a starting time becomes relatively larger than a bearing clearance at a regular operating time within a range which is equal to or more than 2.5% and is equal to or less than 20%. Accordingly, since the bearing clearance becomes larger within the range which is equal to or more than 2.5% and is equal to or less than 20% at the starting time with respect to the regular operating time, while narrowing the bearing clearance for preventing a compression efficiency of the compressor for the refrigerator from being lowered due to a deflection of an axis of a crank shaft, at the regular operating time, it is possible to prevent a sliding surface of a bearing and a surface of the crank shaft from coming into direct contact with each other. | 09-23-2010 |
| 20100220945 | CONNECTING ROD BEARING IN INTERNAL COMBUSTION ENGINE - Disclosed is a connecting rod bearing for an internal combustion engine. At least one of the semi-cylindrical bearings is provided with a circumferential groove on an inner surface of the one semi-cylindrical bearing, which circumferential groove extends from at least one of two abutting ends with respect to the other semi-cylindrical bearing toward a circumferential center part of the one semi-cylindrical bearing, and is in alignment with an outlet port of a lubricant oil passage, the at least one abutting end being oriented toward the same direction as a direction of relative rotation of the crankpin with respect to the connecting rod bearing. The at least one abutting end is oriented toward the same direction as a direction of relative rotation of the crankpin with respect to the connecting rod bearing. | 09-02-2010 |
| 20100177995 | SLIDE MEMBER - In a slide member in which an overlay is provided on a slide receiving surface of a base member, the overlay is formed by attaching a mixed solid lubricant on the slide receiving surface of the base member. The mixed solid lubricant is made by mixing a large amount of hydrogen containing solid lubricant which contains a large amount of hydrogen, and a small amount of hydrogen containing solid lubricant which contains a smaller hydrogen amount than the large amount of hydrogen containing lubricant. Thereby, a lubricant absence region where the solid lubricant is absent in a thickness direction is formed on the slide receiving surface of the base member after sliding, and an oxidized portion where the base member is oxidized is formed in the lubricant absence region. | 07-15-2010 |
| 20100166351 | SPLIT-TYPE SLIDING BEARING FOR CRANKSHAFT IN INTERNAL COMBUSTION ENGINE AND SPLIT-TYPE SLIDING BEARING DEVICE - Disclosed is a split-type sliding bearing for a crankshaft in an internal combustion engine, which is incorporated in a split-type bearing housing. The sliding bearing consists of a pair of semi-cylindrical bearing bodies (i.e. a first and a second semi-cylindrical bearing bodies) which are combined with each other to form a cylindrical body. The bearing housing has a cylindrical bearing retaining bore and consists of a pair of housing halves. One of the housing halves has a relatively lower stiffness, and the other has a relatively higher stiffness. The first bearing body is held by the housing half having a relatively lower stiffness. The second bearing body is held by the housing half having a relatively higher stiffness. The first and second bearing bodies have an equal outer diameter to each other, and both of the circumferential end parts of the first bearing body have a larger thickness than those of the second bearing body prior to incorporation into the housing halves. | 07-01-2010 |
| 20100166350 | SPLIT-TYPE SLIDING BEARING FOR CRANKSHAFT IN INTERNAL COMBUSTION ENGINE AND SPLIT-TYPE SLIDING BEARING DEVICE - A split-type sliding bearing, for a crankshaft in an internal combustion engine, is comprised of a pair of semi-cylindrical bearings which are fitted between a pair of housing halves having respectively high and low thermal expansion coefficients and constituting a split-type bearing housing, one of the pair of semi-cylindrical bearings being supported on the housing half having a low thermal expansion coefficient, and the other one of the pair of semi-cylindrical bearings being supported on the housing have having a high thermal expansion coefficient. The circumferential end zones of the semi-cylindrical bearing supported on the housing half having a high thermal expansion coefficient have a thickness which is set to be greater than that of the circumferential end zones of the semi-cylindrical supported on the housing half having a low thermal expansion coefficient. The split-type sliding bearing can solve the problem of occurrence of a stepped difference which is caused at the inner surface of the bearing between the abutting end faces of the pair of semi-cylindrical bearings when the temperature of the split-type bearing housing is increased during operation of the internal combustion. | 07-01-2010 |
| 20100166349 | SPLIT-TYPE SLIDING BEARING FOR A CRANKSHAFT IN INTERNAL COMBUSTION ENGINE AND SPLIT-TYPE SLIDING DEVICE - The invention provides a split-type sliding bearing for a crankshaft in an internal combustion engine. | 07-01-2010 |
| 20100119181 | SLIDING BEARING FOR INTERNAL COMBUSTION ENGINE AND SLIDING BEARING DEVICE - Disclosed is a sliding bearing consisting of a pair of semi-cylindrical bearings for supporting a crankshaft or a crank pin in an internal combustion engine. The sliding bearing is incorporated in a split-type bearing housing. One of the semi-cylindrical bearings being incorporated in at least one of the pair of housing halves, which one housing half has a relatively higher stiffness, is provided with a number of circumferential grooves on an inner surface of the semi-cylindrical bearing so as to extend circumferentially along the inner surface of the semi-cylindrical bearing. The circumferential grooves existing at least one circumferential end region of the inner surface of the semi-cylindrical bearing have a depth of not less than 10 μm, the circumferential end region including a circumferential bearing end face orientating a direction opposite to the rotation direction of the shaft or pin. | 05-13-2010 |
| 20090317654 | SLIDE MEMBER - A slide member provided with an Al-based alloy layer including Si and having a first contoured surface having first planar surfaces and first convexities consisting of Si particles protruding from the first planar surfaces; an intermediate layer that coats the Al-based alloy layers an overlay that coats the intermediate layer; wherein 90% or more of the Si particles protruding from the first planar surfaces are configured to have a predetermined particle diameter of 2 μm or less, the Si particles having the predetermined particle diameter being distributed in the Al-based alloy layer with a distance between centers of gravity of the Si particles having the predetermined particle diameter averaging 6 μm or less, and wherein the overlay has a second contoured surface having second planar surfaces and second convexities conforming with the first planar surfaces and the first convexities of the first contoured surface. | 12-24-2009 |
| 20090246072 | ALUMINUM-BASED BEARING ALLOY - The present invention has been made by the fact that the wettability with lubricant increases when tin grains are broken within a certain range. In an aluminum-based bearing alloy containing from 2 to 20 mass % of tin, the tin grains in a sliding surface have a size not less than 20 μm | 10-01-2009 |
| 20090245702 | SLIDING BEARING - Disclosed is a sliding bearing having excellent fatigue resistance property under a high specific load. The sliding bearing has a back metal layer | 10-01-2009 |
| 20090238507 | SLIDING BEARING - A halved sliding bearing is provided, two of which are paired into a cylindrical shape. The halved sliding bearing includes a steel back metal, and a bearing alloy layer, which serves as a sliding surface, on the inside of the steel back metal. A coat layer of Bi or a Bi-based alloy is formed on the outside back surface of the steel back metal. Preferably, the coat layer consists of 1 to 30 mass % of one or more of Sn, Pb, In, Ag and Cu and the balance being Bi and inevitable impurities. | 09-24-2009 |
| 20090238504 | SLIDING BEARING - A cylindrical sliding bearing having a cylindrical steel back metal, and a bearing alloy layer, serving as a sliding surface, on the inside of the steel back metal is provided. The cylindrical sliding bearing further have a coat layer of Bi or a Bi-based alloy formed on the outer back surface of the steel back metal. Preferably, the coat layer is made from the Bi-based alloy of 1 to 30 mass % of one or more kinds of Sn, Pb, In, Ag and Cu; and the balance being Bi and inevitable impurities. | 09-24-2009 |
| 20090214887 | SLIDING MEMBER - A sliding member comprises an overlay layer that is formed on a copper alloy layer including a second phase composition. The copper alloy layer and the overlay layer have an interface therebetween, and the second phase composition is included in the copper alloy layer except the interface. | 08-27-2009 |
| 20090169141 | CONNECTING ROD BEARING FOR INTERNAL COMBUSTION ENGINES - Disclosed is a connecting rod bearing for internal combustion engines of a forced-feed lubrication type crank shaft. A connecting rod bearing as a preferred embodiment consists of a pair of semicircular bearings. An inner surface of at least one of the semicircular bearings is provided with at least one circumferential groove which is formed on the inner surface within a maximum circumferential angle range of 45 degrees, measured from one circumferential end facing the same direction as a rotational direction of the crankpin toward a circumferential center region of the semicircular bearing, each of the semicircular bearings having two circumferential ends which are of butt ends brought into contact with those of a mating semicircular bearing. In an assembled state of the semicircular bearings such that the butt ends thereof are brought into butt-contact with one another between the mating semicircular bearings, an axial groove is formed on an inner surface of at least one of the semicircular bearings so as to extend along the butt end throughout a full length between both axial ends of the semicircular bearing, whereby the axial groove, as a lubricant-oil flow channel, is connected with the circumferential groove. | 07-02-2009 |
| 20090139366 | SLIDE PLATE AND RACK GUIDE OF RACK AND PINION TYPE STEERING DEVICE - A slide plate and a rack guide for supporting a rack bar in a casing of a rack and pinion type steering device are provided. The slide plate can be mounted on a rack guide base body while being restricted to be in a regular state with respect to a recessed portion of the rack guide base body. The rack guide is constituted by the slide plate and the rack guide base body on which the slide plate is mounted. The slide plate is constituted by a main body portion receiving the rack bar, and restricting portions on both sides of the main body portion in a moving direction of the rack bar, which restricting portions are in contact with both flanks of the rack guide base body. | 06-04-2009 |
| 20090123650 | METHOD FOR PRODUCING RESIN-COATED SLIDING MEMBER AND APPARATUS FOR PRODUCING THE SAME - An object of the present invention is to provide a method for producing a resin-coated sliding member wherein the method ensures the productivity and at the same time enables the recycling of the solvent so as to be friendly to the environment. According to the present invention, included are a coating step in which a porous sintered layer prepared by sintering on a back metal is impregnated with a solvent-containing resin composition, a heating step to heat the solvent and the resin composition and a collecting step to collect the solvent wherein the vaporized solvent is sucked, liquefied and collected; and hence even when a solvent having a high boiling point and a low vapor pressure is used, the solvent can be collected efficiently by applying a low energy, and the collected solvent is recycled so as to be friendly to the environment and to enable the reduction of the consumed raw materials. | 05-14-2009 |
| 20090026016 | OIL/AIR LUBRICATION SYSTEM - There is provided an oil/air lubrication system capable of surely detecting lubrication oil in oil/air adapted to be fed into a rotary portion of a machine tool. A detection means which is provided to a pipe line in the vicinity of a mixing valve, just downstream of the mixing valve, is adapted to detect a flow of lubrication oil with the use of electromagnetic waves, and accordingly, a flow of air/oil can be accurately detected, irrespective of vibration of the machine tool, influence by the gravity, variation in the flow and a length of the pipe line from the mixing valve to the machine tool, and irrespective of a viscosity of the lubrication oil, and as well, irrespective of the installation of the detecting portion of the detecting means in a vertical direction or a horizontal direction. | 01-29-2009 |
| 20080312357 | COMPOSITION FOR DRY LUBRICANT FILM AND PLAIN BEARING WITH SLIDING LAYER USING THE SAME - The present invention provides a plain bearing having improved bearing properties, especially anti-seizure property, initial conformability and cavitation resistance. According to the present invention, a sliding layer is provided on a surface of a bearing alloy layer comprising of a copper-based or aluminum-based alloy, thereby the sliding layer is so structured that, to a polyamide-imide resin of a main constituent, a polyamide resin is added and mixed under a high shear force to form a polymer-alloyed resin binder, in which 1 to 75% by mass of a solid lubricant is dispersed. The sliding layer can have high toughness and strength, as well as improved anti-seizure property, initial conformability and cavitation resistance. | 12-18-2008 |
| 20080292815 | METHOD FOR PRODUCING RESIN-COATED SLIDING MEMBER - The present invention provides a method for producing a resin-coated sliding member in which problems such as blistering do not occur even if drying of the solvent is carried out rapidly, and in which quality is also stabilized. The method includes an impregnating step for impregnating a solvent-containing resin composition by a resin impregnating apparatus | 11-27-2008 |
| 20080291775 | METHOD AND APPARATUS FOR MANUFACTURING POLARIZABLE ELECTRODE FOR ELECTRIC DOUBLE LAYER CAPACITOR - There are provided method and apparatus for manufacturing a polarizable electrode for electric double layer capacitor is provided which is capable of preventing porosities, cracks, or breakage of a sheet as much as possible when molding materials are formed into a sheet form and improving the yield of the molding materials. The manufacturing apparatus is used before granulated molding materials that are finely divided and crushed are moved to a calendar molding machine | 11-27-2008 |
| 20080241515 | SLIDING MEMBER - In a sliding member, a coating layer containing a binder resin and a solid lubricant is formed on a surface of a bearing alloy layer or a base material. A flaky metal is added as a thermally conductive filler to the coating layer. The flaky metals are close to one another, or in contact with one another to form a heat transfer path which transfers heat of the surface of the coating layer to the base material. The thermal conductivity of the coating layer is set to 0.4 W/m·K or more, so that the heat generated on the surface of the coating layer due to rotation of a mating shaft is easily released to a bearing alloy layer | 10-02-2008 |
| 20080241376 | METHOD OF AND APPARATUS FOR MANUFACTURING COATED BEARING - In the case where rolling printing is used to apply a coating liquid to an inner surface of a half bearing to form a coating layer thereon, the coating layer is formed in uniform thickness. | 10-02-2008 |
| 20080206087 | PLAIN BEARING AND METHOD OF MANUFACTURING THE SAME - A plain bearing is provided which has an Sn-and-Si-rich layer formed of an Al alloy containing Sn and Si, and a base material which does not contain Sn. The Sn-and-Si-rich layer have the sliding surface having an area ratio of Sn phase grains in a range of 6 to 40% and that of Si phase grains in a range of 5 to 25%. | 08-28-2008 |
