Abstract: An electromagnetic flowmeter includes a measuring tube, electrodes, an exciting coil for applying, to a fluid, a time-changing magnetic field asymmetrical with respect to a plane PLN, a signal conversion unit which extracts a ?A/?t component, irrelevant to a fluid flow velocity, from a resultant electromotive force of an electromotive force based on the ?A/?t component and an electromotive force based on a v×B component originating from the flow velocity of the fluid, a flow rate output unit which removes a variation factor for a span as a coefficient applied to a magnitude V of a flow velocity of the v×B component in the resultant electromotive force, based on the extracted ?A/?t component, and calculates a flow rate of the fluid from a result obtained by removing the variation factor, and signal lines inclined with respect to a direction of the magnetic field in parallel with the plane PLN.

Abstract: A highly corrosion resistant high strength stainless steel pipe for linepipe, having a composition containing about 0.001 to about 0.015% C, about 0.01 to about 0.5% Si, about 0.1 to about 1.8% Mn, about 0.03% or less P, about 0.005% or less S, about 15 to about 18% Cr, about 0.5% or more and less than about 5.5% Ni, about 0.5 to about 3.5% Mo, about 0.02 to about 0.2% V, about 0.001 to about 0.015% N, and about 0.006% or less O, by mass, so as to satisfy (Cr+0.65 Ni +0.6Mo+0.55Cu?20C?18.5), (Cr+Mo+0.3Si?43.5C?0.4Mn?Ni?0.3Cu?9 N?11.5) and (C+N?0.025). Preferably quenching and tempering treatment is applied to the pipe. The composition may further contain about 0.002 to about 0.05% Al, and may further contain one or more of Nb, Ti, Zr, B, and W, and/or Cu and Ca. The microstructure preferably contains martensite, ferrite, and residual ?.

Abstract: A stainless steel pipe for use in oil wells which has a high strength having a YS of 654 MPa or more and superior corrosion resistance even in a severe corrosive environment in which CO2 and are present and the temperature is high, such as up to 230° C. The pipe contains on a mass percent basis: 0.005% to 0.05% of C; 0.05% to 0.5% of Si; 0.2% to 1.8% of Mn; 0.03% or less of P; 0.005% or less of S; 15.5% to 18% of Cr; 1.5% to 5% of Ni; 1% to 3.5% of Mo; 0.02% to 0.2% of V; 0.01% to 0.15% of N; 0.006% or less of 0; and the balance being Fe and unavoidable impurities, in which Cr+0.65Ni+0.6Mo+0.55Cu?20C?19.5 and Cr+Mo+0.3Si?43.5C?0.4Mn?Ni?0.3Cu?9N?11.5 are satisfied (where Cr, Ni, Mo, Cu, C, Si, Mn, and N represent the respective contents on a mass percent basis).

Abstract: The surface of a signal electrode is treated as substrate treatment. For example, an oxide film on the surface of the signal electrode is removed for roughing, and the roughened surface is used as a surface treated face. A coating of a fluororesin is provided on the surface treated face for lining or thermal welding to the lining material. A signal electrode is provided in the resin lining. Since the oxide film has been removed from the surface of the signal electrode for roughening, the adhesive force of the coating of the fluororesin is increased. The fluororesin coating and the resin lining melt each other, and, as a result, the fluororesin coating is strongly bonded to the resin lining, whereby the adhesion between the signal electrode and the resin lining can be increased without opening a hole in the signal electrode. A method may also be adopted in which a primer film is formed by substrate treatment on the surface of the signal electrode.

Abstract: There is provided a cost-effective stainless steel pipe having excellent expandability for oil country tubular goods, the stainless steel pipe having excellent CO2 corrosion resistance under a severe corrosive environment containing CO2, Cl?, and the like. The stainless steel pipe having excellent expandability for oil country tubular goods contains 0.05% or less C, 0.50% or less Si, Mn: 0.10% to 1.50%, 0.03% or less P, 0.005% or less S, 10.5% to 17.0% Cr, 0.5% to 7.0% Ni, 3.0% or less Mo, 0.05% or less Al, 0.20% or less V, 0.15% or less N, and 0.008% or less O, optionally at least one selected from Nb, Cu, Ti, Zr, Ca, B, and W, in a specific content, and the balance being Fe and incidental impurities, wherein a microstructure mainly having a tempered martensitic phase has an austenitic phase content exceeding 20%.

Abstract: The present invention provides a seamless expandable oil country tubular goods, which has a superior pipe expansion property in a expanding process at an expand ratio of more than 30% although having a high strength such as a tensile strength (TS) of 600 MPa or more, and a manufacturing method thereof, the seamless expandable oil country tubular goods being in an as-rolled state or being processed, whenever necessary, by inexpensive nonthermal-refining type heat treatment. In a particular product, 0.010% to less than 0.10% of C, 0.05% to 1% of Si, 0.5% to 4% of Mn, 0.03% or less of P, 0.015% or less of S, 0.01% to 0.06% of Al, 0.007% or less of N, and 0.005% or less of O are contained, and at least one of Nb, Mo, and Cr is contained in the range of 0.01% to 0.2% of Nb, 0.05% to 0.5% of Mo, and 0.05% to 1.5% of Cr, so that Mn+0.9×Cr+2.6×Mo?2.0 and 4×C?0.3×Si+Mn+1.3×Cr+1.5×Mo?4.5 are satisfied.

Abstract: A highly corrosion resistant high strength stainless steel pipe for linepipe, having a composition containing about 0.001 to about 0.015% C, about 0.01 to about 0.5% Si, about 0.1 to about 1.8% Mn, about 0.03% or less P, about 0.005% or less S, about 15 to about 18% Cr, about 0.5% or more and less than about 5.5% Ni, about 0.5 to about 3.5% Mo, about 0.02 to about 0.2% V, about 0.001 to about 0.015% N, and about 0.006% or less O, by mass, so as to satisfy (Cr+0.65Ni+0.6Mo+0.55Cu?20C?18.5), Cr+Mo+0.3Si?43.5C?0.4Mn?Ni?0.3Cu?9N?11.5) and (C+N?0.025). Preferably quenching and tempering treatment is applied to the pipe. The composition may further contain about 0.002 to about 0.05% Al, and may further contain one or more of Nb, Ti, Zr, B, and W, and/or Cu and Ca. The microstructure preferably contains martensite, ferrite, and residual ?.

Abstract: An image forming apparatus comprising a fixing roller, an endless fixing belt engaged at least with the fixing roller, and a pressing roller opposite to the fixing roller with the endless fixing belt between them; wherein the image forming apparatus is equipped with a pressure changing member for changing the mean pressure on a second pressing area against which the pressing roller pressed the fixing roller via the fixing belt in the pressure area formed by the pressing roller.

Abstract: A stainless steel pipe for use in oil wells is proposed which has a high strength having a YS of 654 MPa or more and superior corrosion resistance even in a severe corrosive environment in which CO2 and Cl? are present and the temperature is high, such as up to 230° C. The pipe contains on a mass percent basis: 0.005% to 0.05% of C; 0.05% to 0.5% of Si; 0.2% to 1.8% of Mn; 0.03% or less of P; 0.005% or less of S; 15.5% to 18% of Cr; 1.5% to 5% of Ni; 1% to 3.5% of Mo; 0.02% to 0.2% of V; 0.01% to 0.15% of N; 0.006% or less of O; and the balance being Fe and unavoidable impurities, in which Cr+0.65Ni+0.6Mo+0.55Cu?20C?19.5 and Cr+Mo+0.3Si?43.5C?0.4Mn—Ni?0.3Cu?9N?11.5 are satisfied (where Cr, Ni, Mo, Cu, C, Si, Mn, and N represent the respective contents on a mass percent basis).

Abstract: The present invention has an object to comprise an apparatus for high efficiency gas temperature and humidity adjustment and an adjustment method allowing to elevate the heat exchange efficiency of a cooling coil, reduce the cooling water quantity, lower also the pipe arrangement diameter and water supply pump power, making possible to cut the initial cost and running cost of the air-conditioning system. The apparatus for high efficiency gas temperature and humidity adjustment is characterized by that means for removing condensate water deposited on the cooling coil.

Abstract: A cylindrical grooved cam with a plurality of grooved cams provided on its inner cylindrical surface comprises an inner tube having at least two guide walls that are provided on its lower edge and represent one guide wall line of the grooved cam to be formed on the inner cylindrical surface; and an outer tube having at least two guide walls that are provided on its upper edge of protruded area on its cylindrical inner surface and represent the other guide wall line of the grooved cam to be formed on the inner cylindrical surface; wherein the inner tube is to be inserted into the outer tube from above so that the guide walls of the inner tube and the counter part guide walls of the outer tube form the grooved cams on the inner cylindrical surface of the cylindrical grooved cam.

Abstract: A multifocal lens system to be used for digital cameras for setting any one of a plurality of lenses in a picture taking (image capturing) position comprising a wide-angle lens (shorter focal length lens) mounted in front of an image sensor in a picture taking (image capturing) position, a telephoto lens (longer focal length lens) mounted alongside the wide-angle lens, a parallelogram prism (rhombic prism) or a pair of triangular prisms removably arranged between the two lenses at the rear of them. When the wide-angle lens is to be used, the parallelogram prism or one of the two triangular prisms is to be removed from the rear of wide-angle lens so that the wide-angle lens can be focused on the sensor enabling light to pass therethrough.

Abstract: A cylindrical grooved cam with a plurality of grooved cams provided on its inner cylindrical surface comprises an inner tube having at least two guide walls that are provided on its lower edge and represent one guide wall line of the grooved cam to be formed on the inner cylindrical surface; and an outer tube having at least two guide walls that are provided on its upper edge of protruded area on its cylindrical inner surface and represent the other guide wall line of the grooved cam to be formed on the inner cylindrical surface; wherein the inner tube is to be inserted into the outer tube from above so that the guide walls of the inner tube and the counter part guide walls of the outer tube form the grooved cams on the inner cylindrical surface of the cylindrical grooved cam.

Abstract: An image forming apparatus comprising a fixing roller, an endless fixing belt engaged at least with the fixing roller, and a pressing roller opposite to the fixing roller with the endless fixing belt between them; wherein the image forming apparatus is equipped with a pressure changing member for changing the mean pressure on a second pressing area against which the pressing roller pressed the fixing roller via the fixing belt in the pressure area formed by the pressing roller.

Abstract: A long-life bearing steel for general purpose use is provided at low cost with no use of specific secondary refining process. Specifically, a bearing material having a component composition in which C: 0.95 to 1.10 mass %, Si: 0.15 to 0.70 mass %, Mn: 1.15 mass % or less, Cr: 0.90 to 1.60 mass %, and P: 0.025 mass % or less are contained, S and O, that are elements forming nonmetallic inclusions, are contained at S: 0.025 mass % or less and O: 0.0012 mass % or less, and the rest is composed of Fe and incidental impurities, wherein the maximum diameter of the oxide-based nonmetallic inclusion is more than 10 ?m, but 15 ?m or less in an inspection area: 320 mm2, the number of oxide-based nonmetallic inclusions having an equivalent circle diameter of 3 ?m or more is 250 or less in the inspection area: 320 mm2, while in the material, AlN is contained at 0.

Abstract: An optical apparatus to be used for digital still cameras for setting any one of a plurality of lenses in a picture taking (image capturing) position comprising a lens turret rotatable around an axis and having the lenses mounted thereon, a driving mechanism to rotate the lens turret so that one of the lenses can be set at the picture taking position and a means to adjust and extend the back focal length of the lens shaped like a column or square column and made of glass, plastic or the like that has higher refraction index than that of air. By said means of back focal length adjustment, the position of the lens with shorter focal length can be fixed on the lens turret moving apart from the image sensor like CCD or C-MOS upward without changing its focal length itself, and fixed at the same level thereon as the lens with longer focal length.

Abstract: A multifocal lens system to be used for digital cameras for setting any one of a plurality of lenses in a picture taking (image capturing) position comprising a wide-angle lens (shorter focal length lens) mounted in front of an image sensor in a picture taking (image capturing) position, a telephoto lens (longer focal length lens) mounted alongside the wide-angle lens, a parallelogram prism (rhombic prism) or a pair of triangular prisms removably arranged between the two lenses at the rear of them. When the wide-angle lens is to be used, the parallelogram prism or one of the two triangular prisms is to be removed from the rear of wide-angle lens so that the wide-angle lens can be focused on the sensor enabling light to pass therethrough.

Abstract: A measurement pipe for an electromagnetic flowmeter includes a cylindrical pipe main body, a pair of flanges, and a lining material. The cylindrical pipe main body has openings at its two ends. The pair of flanges are integrally formed with the pipe main body to project outside the openings. The lining material is made of a reinforcing-material-mixed synthetic resin to cover at least an inner surface of the pipe main body and side surfaces of the flanges.

Abstract: An optical apparatus to be used for digital still cameras for setting any one of a plurality of lenses in a picture taking (image capturing) position comprising a lens turret rotatable around an axis and having the lenses mounted thereon, a driving mechanism to rotate the lens turret so that one of the lenses can be set at the picture taking position and a means to adjust and extend the back focal length of the lens shaped like a column or square column and made of glass, plastic or the like that has higher refraction index than that of air. By said means of back focal length adjustment, the position of the lens with shorter focal length can be fixed on the lens turret moving apart from the image sensor like CCD or C-MOS upward without changing its focal length itself, and fixed at the same level thereon as the lens with longer focal length.

Abstract: A measurement pipe for an electromagnetic flowmeter includes a cylindrical pipe main body, a pair of flanges, and a lining material. The cylindrical pipe main body has openings at its two ends. The pair of flanges are integrally formed with the pipe main body to project outside the openings. The lining material is made of a reinforcing-material-mixed synthetic resin to cover at least an inner surface of the pipe main body and side surfaces of the flanges.