| SUMITOMO (SEI) STEEL WIRE CORP. Patent applications |
| Patent application number | Title | Published |
|---|
| 20100315076 | TENSION MEASUREMENT APPARATUS - A tension measurement apparatus that can carry out tension measurement of superior reproducibility with high sensitivity even for a target object of a stranded wire structure is provided. A cylindrical magnetizer arranged to surround a portion of a long magnetic element that becomes the target object of measurement direct-current magnetizes the magnetic element in the longitudinal direction up to the range of approach to saturation magnetization. Using a Hall element (magnetic sensor) arranged in proximity to the magnetic element at the central region in the longitudinal direction of the magnetic domain, the spatial magnetic field intensity in the neighborhood of the surface of the magnetic element, greatly differing corresponding to stress variation, is detected. Based on the detection value, the tension acting on the magnetic element is measured. Accordingly, a measurement result of superior reproducibility with high sensitivity is obtained. The tension measurement apparatus is applicable even to a target object of a stranded wire structure. | 12-16-2010 |
| 20100200142 | ANNULAR CORE STRANDED BEAD WIRE AND VEHICLE TIRE USING THE SAME - An annular core stranded bead wire having a reduced weight and offering ease in manufacturing and handling and a vehicle tire using such a bead wire are provided. | 08-12-2010 |
| 20100108197 | HIGH-STRENGTH PC STEEL STRANDED WIRE, PROCESS FOR MANUFACTURING THE SAME, AND CONCRETE STRUCTURE UTILIZING THE WIRE - The present invention provides a prestressing strand that has higher strength and is more suitable for practical use than known prestressing strands, and a concrete construction using the prestressing strand. | 05-06-2010 |
| 20100050546 | STRAND - There is provided a strand that can reduce the trouble in constructing an object to which compression force is applied by the strand and that can keep the construction cost down. | 03-04-2010 |
| 20090288747 | Metal Cord, Rubber-Cord Complex and Pneumatic Tire Using the Same - A rubber-cord complex having an improved wet heat adhesive property between a rubber and a cord comprising a drawn plated wire, and including a metal cord comprising a drawn plated wire prepared by providing a brass plated layer on the surface of an element wire and drawing the resulting plated wire, and a rubber vulcanized and bonded to the cord, wherein in a wet heat deterioration state of the drawn plated wire after being subjected to the vulcanization to bond the rubber thereto and further held under an atmosphere having a temperature of 50 to 100° C. and a humidity of 60 to 100% for one hour to 20 days, the average grain size of crystal grains present in the brass plated layer is not more than 50 nm, and the grain boundary of the crystal grains has a fractal dimension of 1.001 to 1.500. | 11-26-2009 |
| 20090260735 | BEAD CORD AND VEHICLE TIRE - A bead cord is described including an annular core and a side wire. The side wire is helically wound around the annular core. Further, the annular core is made of a strand wire. The strand wire includes a plurality of twisted core wires. The plurality of core wires may have substantially the same diameter. | 10-22-2009 |
| 20090258228 | STEEL WIRE FOR SPRING - Spring steel wire is formed by drawing steel wire including a phosphate film, the weight of the film being in the range of 3.0 to 5.5 g/m | 10-15-2009 |
| 20090205741 | CONNECTION METHOD OF METAL LINEAR ELEMENT AND CONNECTION DEVICE OF METAL LINEAR ELEMENT - A connection method for connecting metal linear objects facing each other includes disposing a pair of rotators with a space interposed therebetween. Each rotator including a pair of holding portions that are provided with a space interposed therebetween and that are able to hold the metal linear objects. The connection method also includes holding the vicinities of end portions of the metal linear objects at the holding portions of the rotators to hang the metal linear objects therebetween so that the vicinities of the end portions of the metal linear objects are overlapped with each other in an axis direction and rotating the rotators relatively in the opposite directions around between the pair of holding portions as a rotation center. As a result, the metal linear objects are twisted with each other between the rotators to perform connection. | 08-20-2009 |
| 20090174129 | HIGH-STRENGTH STAINLESS STEEL SPRING AND METHOD OF MANUFACTURING THE SAME - Provided is a high-strength stainless steel spring exhibiting a good workability and having a high load characteristic. Thus, the high-strength stainless steel spring of the invention has an chemical component containing 0.04 to 0.08% by mass of C, 0.15 to 0.22% by mass of N, 0.3 to 2.0% by mass of Si, 0.5 to 3.0% by mass of Mn, 16 to 20% by mass of Cr, 8.0 to 10.5% by mass of Ni, 0.5 to 3.0% by mass of Mo, and the balance of Fe and inevitable impurities, and when the average diameter of the coil is represented by D and further the diameter of the steel wire is represented by d in the case that cross sections of the stainless steel wire are in a complete round form or the value obtained by subtracting the average coil diameter from the outer diameter of the coil is represented by d′ in the case that the cross sections of the stainless steel wire are in a form other than the complete round form, the spring has a spring index D/d or D/d′ of 2 to 6. | 07-09-2009 |
| 20090136697 | ANNULAR METAL CORD, ENDLESS METAL BELT, AND METHOD OF PRODUCING ANNULAR METAL CORD - An annular metal cord includes an annular core portion formed in an annular shape, and an outer layer portion spirally wound around the annular core portion while running over an annular circumference thereof plural times and covering an outer peripheral surface of the annular core portion. Each of the annular core portion and the outer layer portion are formed by a strand material which is formed by intertwisting a plurality of metal filaments. At least part of the outer layer portion is covered with an outer layer sheath made of a coating material having elasticity. | 05-28-2009 |
| 20090133798 | PROCESS FOR PRODUCING WIRE FOR BEAD CORD, BEAD CORD, AND VEHICLE TIRE - A method for manufacturing a bead cord wire includes the steps of subjecting a steel wire to a descaling treatment, subjecting the descaling-treated steel wire to a chemical conversion coating treatment through electrolysis so as to form a phosphate coating on a surface of the steel wire, and subjecting the chemical-conversion-coating-treated steel wire to drawing so as to produce a bead cord wire. In producing the bead cord wire, the drawing is conducted in such a way that the phosphate coating remains on the surface of the bead cord wire. | 05-28-2009 |
| 20090088278 | ANNULAR METAL CORD, ENDLESS METAL BELT, AND ANNULAR METAL CORD MANUFACTURING METHOD - An annular metal cord includes an annular core portion formed in an annular shape, and an outer layer portion spirally wound around the annular core portion while running over an annular circumference thereof plural times and covering an outer peripheral surface of the annular core portion. Each of the annular core portion and the outer layer portion are formed by a strand material which is formed by intertwisting a plurality of metal filaments. The annular core portion and the outer layer portion are formed by a continuous strand material. | 04-02-2009 |
| 20090032151 | MAGNESIUM BASE ALLOY PIPES AND METHOD OF MANUFACTURING THE SAME - A magnesium base alloy pipe having high strength and toughness is provided along with a method of manufacturing such pipes. A magnesium base alloy pipe, wherein the pipe is produced by drawing a pipe blank of a magnesium base alloy comprising containing either of the following ingredients (1) or (2): (1) about 0.1-12.0 mass % of Al; or (2) about 1.0-10.0 mass % of Zn and about 0.1-2.0 mass % of Zr. The novel alloy pipe is manufactured by a method comprising steps of providing the above-described pipe blank, pointing the pipe blank, and drawing the pointed pipe blank. The drawing step is executed at a drawing temperature above approx. 50° C. | 02-05-2009 |
| 20090025846 | Metal Cord, Rubber-Cord Complex and Pneumatic Tire Using the Same - A rubber-cord complex | 01-29-2009 |
| 20080277040 | Connector For A Wrap Wire Of A Bead Cord - An object of the present invention is to prevent shifting of a connector for a wrap wire, reduced strength of the connector, and deterioration in balance, and to make it possible to easily connect the ends of the wrap wire. | 11-13-2008 |
