Quotables
"To place a man in a multi-stage rocket and project him into the controlling gravitational field of the moon where the passengers can make scientific observations, perhaps land alive, and then return to earth--all that constitutes a wild dream worthy of Jules Verne. I am bold enough to say that such a man-made voyage will never occur regardless of all future advances."
Lee deForest, American radio pioneer ; 1957
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| Number | Title | Issue Date |
| 7870674 | Production method for oil-impregnated sintered bearing An end surface 1a of sintered bearing 1 is abutted on a die 10 so that the sintered bearing 1 is mounted thereon, and a tool 40 is abutted on the other end surface 1b of the sintered bearing 1. While the... | 01/18/2011 |
| 7309465 | Sintered sprocket for silent chain and production method therefor A sintered sprocket for a silent chain is obtained from a material with few addition elements by a simple densifying method. The sintered sprocket is made of an ferrous material having an ovarall composition containing Cu at 1 to 2%, C at 0.5 to 0.8%, Mn as an inevi... | 12/18/2007 |
| 7251891 | Production method for sintered bearing member, fluid dynamic pressure bearing device, and spindle motor A production method for sintered bearing member comprises: compacting a metal powder into a green compact, sintering the green compact into a sintered compact; impregnating a resin solvent into the sintered compact, and removing the resin solvent adhering to a surfa... | 08/07/2007 |
| 7234871 | Sliding bearing for use under high load A sliding bearing which is suitable for and durable in the use under high load of sliding in rocking motion, and the structure of bearing is not complicated so as to facilitate the manufacturing. The alloy used for making the bearing is composed of iron-based sinter... | 06/26/2007 |
| 7166254 | Process for producing sintered aluminum alloy A process for producing a sintered aluminum alloy in which dispersion of tensile strength is small and elongation property and fatigue strength are improved. In this process comprising the steps of compacting powder mixture containing rapidly solidified Al—Si powd... | 01/23/2007 |
| 7151334 | Permanent magnet type rotor and method of manufacturing the rotor A permanent magnet type rotor comprises an inner member 2 having an outer ring portion 21; an approximately annular outer member 1 having soft magnetism and an inner circumference contacting with an outer circumference of the outer ring portion;... | 12/19/2006 |
| 7048666 | Silent chain power transmitting apparatus A silent chain power transmitting apparatus has an endless link chain having a plurality of link plates (11A,11B,11C, . . . ) connected together, and sprocket wheels (20). Each of an inside flank (13) and an outside flank (14 | 05/23/2006 |
| 7040601 | Valve guide for internal combustion engine made from iron base sintered alloy Valve guides made of ferrous sintered alloy for internal combustion engines have improved durability of the valve stem without soft nitriding process. The valve guides include Cu: 8 to 20 mass %, C: 0.8 to 1.5 mass %, and at least one of MnS, WS2, and MoS... | 05/09/2006 |
| 6951423 | Sintered bearing and production method therefor A sintered bearing is produced by a production method comprising: compacting a metallic raw material powder into a bearing green compact; sintering the green compact into a sintered compact; forming a resin coating 20 over the entire surface of the sintered c... | 10/04/2005 |
| 6851859 | Bearing unit, production method therefor and spindle motor A bearing unit comprises a bearing 60 formed of a sintered metal in which a magnetized magnetic powder is dispersed in its matrix and at least pores exposed on a bearing surface thereof are sealed by impregnation with a resin; a non-magnetic housing 90 | 02/08/2005 |
| 6822358 | Spindle motor and manufacture thereof A spindle motor having a bearing housing and a thrust bearing fitted in the bearing housing at the lower end of the latter, in which an inclined part is formed on the outer peripheral edge at the lower end of the thrust bearing, and the outer diameter part of the th... | 11/23/2004 |
| 6759169 | Graphite powder for negative electrode of lithium ion secondary cell and method of production thereof A method of producing graphite powder for a negative electrode of a lithium ion secondary cell excellent in discharge/charge efficiency (Coulomb efficiency) and having a high capacity retention rate, wherein 0.01 to 10 wt % (on the basis of the graphite material) of... | 07/06/2004 |
| 6758662 | Die for die compacting of powdered material Disclosed is a die for compacting a powdered material. The die has a die body having a penetrating die cavity to which a couple of punches are adapted to apply for pressing the powdered material to be supplied to form a compact, and a die holder having a bore into w... | 07/06/2004 |
| 6756715 | Spindle motor A spindle motor comprises a housing 10 including a through hole with a pair of apertures, one of the apertures being closed by a thrust plate 70 and the other aperture being open; a bearing 60 accommodated in the housing 90; a rotating sh... | 06/29/2004 |
| 6737016 | Process for manufacturing sintered slide bearing Disclosed is a process for manufacturing a sintered slide bearing. A sintered porous bearing body is prepared from a powdered metal material and a resin material in a fluidable state is penetrated into the sintered porous bearing body. The resin material in the sint... | 05/18/2004 |
| 6660056 | Valve seat for internal combustion engines A valve seat is provided in which wear resistance can be ensured by optimizing the matrix structure without dispersing of expensive hard particles, and therefore the machinability can be improved and the holding down of cost can be achieved. The valve sea... | 12/09/2003 |
| 6395082 | Coating material for inner surface of cathode-ray tube In a coating material for the inner surface of a cathode-ray tube comprising an aqueous dispersion medium containing silicates of lithium and potassium and a dispersing agent, and a graphite particles and, if necessary, particles of the other specific met... | 05/28/2002 |
| 6344273 | Treatment solution for forming insulating layers on magnetic particles process for forming the insulating layers, and electric device with a soft magnetic powder composite core The present invention provides a soft magnetic powder composite core for an electric apparatus produced with soft magnetic particles having electric insulating layers on the surfaces thereof, wherein said electric insulating layers are formed by mixing sa... | 02/05/2002 |
| 6340377 | High-temperature wear-resistant sintered alloy The invention relates to an iron-based high-temperature wear-resistant sintered alloy. This alloy contains 3.74-13.36 wt % W, 0.39-5.58 wt % V, 0.2-5.78 wt % Cr, 0.1-0.6 wt % Si, 0.39-1.99 wt % Mn, 0.21-1.18 wt % S, and up to 2.16 wt % C. This alloy inclu... | 01/22/2002 |
| 6302937 | Sintered alloy having superior wear resistance The present invention provides a sintered material having high mechanical strength and superior wear resistance, and to a process of manufacture therefor. A sintered alloy having superior wear resistance has an overall composition consisting of, in percen... | 10/16/2001 |
| 6251157 | Sintered alloy having superb wear resistance and process for producing the same A sintered alloy having superb wear resistance comprising: composite phases dispersed in a matrix of the sintered alloy; the composite phase consisting of; a particle group in which Cr carbide particles and Cr sulfide particles exist in a mixed condition;... | 06/26/2001 |
| 6228138 | Good machinability Fe-based sintered alloy and process of manufacture therefor Machinability is drastically improved while maintaining some degree of hardness in an Fe-based sintered alloy. A good machinability Fe-based sintered alloy has an overall composition of, in percent by weight, at least one element selected from the group c... | 05/08/2001 |
| 6172415 | Thin plate member for semiconductor package and manufacturing method therefor Disclosed is a thin plate member for forming a semiconductor package, having a recess for receiving a semiconductor chip. The thin plate is composed of sintered metal, e.g. sintered copper or sintered alluminum alloy. A sintered metal body being porous an... | 01/09/2001 |
| 6119346 | Composite porous bearing and method of making same A bearing comprising different materials having oil-filled pores in them has a relief space in the middle section which is not provided by machining. The materials are different, have different characteristics, and bear different portions of load the bear... | 09/19/2000 |
| 6054219 | Process for forming insulating layers on soft magnetic powder composite core from magnetic particles The present invention provides a soft magnetic powder composite core for an electric apparatus produced with soft magnetic particles having electric insulating layers on the surfaces thereof, wherein said electric insulating layers are formed by mixing sa... | 04/25/2000 |
| 6049983 | Method for producing a sintered porous bearing and the sintered porous bearing A cylindrical sintered material is placed in a cavity composed of die, a core disposed in the center of the die, and a pair of upper and lower punches provided within the die and compressed by the upper and lower punches. A gap is provided between an inte... | 04/18/2000 |
| 6012703 | Valve guide and process for manufacturing thereof Disclosed is a valve guide which is manufactured by a sintered alloy and used for an engine, and more particularly, to a valve guide which has high wear resistance and can prevent appearance of scuffing on a surface of a valve stem associated with the val... | 01/11/2000 |
| 5952590 | Sintered alloy having superb wear resistance and process for producing the same A sintered alloy having superb wear resistance consisting, percent by weight of, as a whole, Ni in the amount of 1.35 to 19.61%, Cr in the amount of 0.9 to 11.05%, Mo in the amount of 1.44 to 9.09%, Co in the amount of 3.6 to 20.05%, V in the amount of 0.... | 09/14/1999 |
| 5949003 | High-temperature wear-resistant sintered alloy The invention relates to a sintered alloy. This sintered alloy includes 3-13.4 wt % of W, 0.4-5.6 wt % or 0.8-5.9 wt % of V, 0.2-5.6 wt % of Cr, 0.1-0.6 wt % or 0.6-5.0 wt % of Si, 0.1-0.6 wt % or 0.2-1.0 wt % of Mn, 0.6-2.2 wt % of C, and a balance of Fe... | 09/07/1999 |
| 5932946 | Porous bearing system having internal grooves and electric motor provided with the same An improved porous bearing and a motor which is provided with the porous bearing in which the friction losses and reflection of shaft are reduced, noises caused by the vibrations are avoided with low cogging or low jitter, and in addition, the manufacturi... | 08/03/1999 |
| 5905939 | Process for producing connecting rod There is provided a connecting rod including a connecting rod body and a cap having excellent alignment properties, and a method of producing such a connecting rod. A connecting rod body and a cap are produced through the steps of molding green compacts r... | 05/18/1999 |
| 5810479 | Hydrodynamic thrust porous bearing A hydrodynamic thrust porous bearing having excellent sliding characteristics under the use conditions of not only radial load but also thrust load, which bearing is approximately cylindrical in configuration and receives thrust load on its axial end face... | 09/22/1998 |
| 5810481 | Oil retaining bearing unit and motor having oil retaining bearing unit Oil retaining bearing members 2a and 2b for supporting a rotative shaft 1 are arranged in a bearing housing 7 with an interval. The bearing housing 7 has a bottom portion, one end being opened and another end being closed. A porous spacer 3 for supplying ... | 09/22/1998 |
| 5753005 | Source powder for wear-resistant sintered material A source powder for a wear-resistant sintered material, consisting essentially of, in weight percentages, Cr: 3.0 to 6.0%, 2 Mo+W: 10.0 to 20.0%, V: 1.0 to 8.0%, Co: 10.0% or below, C: 0.20% to {0.01(2 Mo+W)+0.24 V}%, Si: 0.1 to 1.0%, Mn: 0.1 to 1.0% and ... | 05/19/1998 |
| 5746516 | Porous bearing system having internal grooves and electric motor provided with the same An improved porous bearing and a motor which is provided with the porous bearing in which the friction losses and reflection of shaft are reduced, noises caused by the vibrations are avoided with low cogging or low jitter, and in addition, the manufacturi... | 05/05/1998 |
| 5714084 | Electrorheological magnetic fluid and process for producing the same An electrorheological magnetic fluid including an electrically insulating liquid and fine particles dispersed therein is described, wherein the fine particles include a fine magnetic particle as a core, wherein the fine magnetic particle has a surface whi... | 02/03/1998 |
| 5682588 | Method for producing ferrous sintered alloy having quenched structure The present invention relates to a method for producing, without quench-hardening process, a ferrous sintered alloy having satisfactory strength which is equal to that of the conventional ferrous sintered quenched material, and the method comprises the st... | 10/28/1997 |
| 5575953 | Coating compositions for the inner wall of cathode-ray tube In a coating composition for the inner wall of a cathode-ray tube comprising an aqueous dispersion medium containing potassium silicate, a dispersing agent and graphite particles or a combination of graphite particles and metal oxide particles or metal ca... | 11/19/1996 |
| 5554338 | Method of preparing composite sintered body The invention relates to a method of preparing a composite sintered body having inner and outer portions fitted with each other. The method includes the steps of: (a) preparing an inner powder compact; (b) preparing an outer powder compact; (c) fitting th... | 09/10/1996 |
| 5545487 | Wear-resistant sintered aluminum alloy and method for producing the same The Al-Si sintered alloy having good mechanical strength and elongation and is especially excellent in wear resistance, and a method for producing the same. The sintered alloy consists of 2.4-23.5% Si, 2-5% Cu, 0.2-1.5% Mg, 0.01-1% of transition metals an... | 08/13/1996 |
