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公开(公告)号：US11380994B2
公开(公告)日：2022-07-05
申请号：US16621348
申请日：2018-06-07
申请人： HITACHI METALS, LTD.
发明人： Hiroki Yamamoto , Tomoyuki Tada , Satoru Tanaka
摘要： A coil device comprising a coil, and a ferrite core arranged in a hollow portion of the coil, and a resin covering them; the ferrite core being a Ni ferrite core having initial permeability μi of 450 or more at a frequency of 100 kHz and a temperature of 20° C., and an average crystal grain size of 5-9 μm, both of temperature-dependent inductance change ratios TLa and TLb and stress-dependent inductance change ratios PLa and PLb being −0.6% to +0.6%, and both of the sum of TLa and PLa and the sum of TLb and PLb being more than −1.0% and less than +1.0%; and an antenna comprising it.
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公开(公告)号：US20220193593A1
公开(公告)日：2022-06-23
申请号：US17595445
申请日：2020-07-30
申请人： HITACHI METALS, LTD.
发明人： Tomohisa OGATA
摘要： A ceramic honeycomb filter has (a) cross section areas of intake flow paths being larger than those of discharge flow paths; (b) the intake and discharge flow paths having octagonal cross section shapes with four-fold rotation symmetry each obtained by cutting off four corners from a square; (c) the intake and discharge flow paths being alternately arranged in a first direction and a second direction perpendicular to the first direction, such that their opposing sides are parallel; (d) the opening ratio of the intake flow paths being 45-60%; (e) the number of the flow paths per cm2 being 30-60; (f) the thickness t1 of a cell wall between an intake flow path and a discharge flow path adjacent to that intake flow path being 0.150-0.260 mm; and (g) the thickness t2 of a cell wall between adjacent intake flow paths meeting 1.175
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公开(公告)号：US11359638B2
公开(公告)日：2022-06-14
申请号：US16636516
申请日：2018-10-31
申请人： HITACHI METALS, LTD.
发明人： Meichuan Chen , Tadashi Fujieda , Kousuke Kuwabara
IPC分类号： F04D29/02 , B33Y10/00 , B33Y70/00 , B33Y40/20 , B22F3/24 , B22F9/08 , C22C30/00 , B22F10/20 , B33Y80/00 , B22F5/00
摘要： An object of the invention is to provide an alloy article that exhibits even better mechanical properties than conventional high entropy alloy articles without sacrificing high corrosion resistance thereof. An alloy article according to the invention comprises matrix phase crystal grains being equiaxed crystals with an average crystal grain size of 150 μm or less, the alloy article having a metallic composition including: Co, Cr, Fe, Ni and Ti, each within a range of 5 atomic % or more and 35 atomic % or less; Mo within a range of more than 0 atomic % and less than 8 atomic %; and a balance comprising inevitable impurities, wherein in the matrix phase crystal grains, ultrafine particles with an average particle size of 100 nm or less and oxide particles with an average particle size of 100 nm or less are dispersedly precipitated.
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公开(公告)号：US11355265B2
公开(公告)日：2022-06-07
申请号：US17229059
申请日：2021-04-13
申请人： Hitachi Metals, Ltd.
摘要： A cable is composed of a cable core including one or more electric wires, a braided shield covering a periphery of the cable core and including braided metal wires, a sheath covering a periphery of the braided shield, and a cushion layer provided between the cable core and the braided shield. The cushion layer is composed of a braid including braided linear shape fiber yarns.
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公开(公告)号：US20220166019A1
公开(公告)日：2022-05-26
申请号：US17670097
申请日：2022-02-11
申请人： Hitachi Metals, Ltd.
发明人： Tatsuya TOYAMA , Hisato TOKORO , Shin TAKAHASHI , Akira GUNJI , Shuichi TAKANO
摘要： A positive electrode active material for a lithium-ion secondary battery includes lithium transition metal composite oxide expressed by Composition Formula (1): Li1+aNibCocMdXeO2+α (1) [in which M represents at least one kind selected from Al and Mn, X represents one or more kinds of metal elements other than Li, Ni, Co, Al, and Mn, and a, b, c, d, e, and a are numerals satisfying −0.04≤a≤0.04, 0.80≤b≤1.0, 0≤c≤0.15, 0≤d≤0.20, 0≤e≤0.05, b+c+d+e=1, and −0.2≤α≤0.2]. A residual lithium hydroxide quantity (L1) in the positive electrode active material calculated by neutralization titration is 0.8 mass % or less, and a ratio of a residual lithium hydroxide quantity (L2) calculated by the neutralization titration after the positive electrode active material is compressed.
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公开(公告)号：US20220154862A1
公开(公告)日：2022-05-19
申请号：US17442881
申请日：2020-03-27
申请人： Hitachi Metals, Ltd.
发明人： Shindo Sakata
IPC分类号： F16L33/035 , F16L33/18
摘要： A retainer allows reduction in a length in a direction of insertion of a flexible pipe and capable of being engaged with the flexible pipe without requiring motions of other members. The retainer is a retainer having a shape of a ring and used in a pipe joint, including: a plurality of pawls for getting into a valley of a corrugated pipe of a flexible pipe to be inserted into the pipe joint; a plurality of supports for contacting an inner surface of a pipe joint body housing the retainer in the pipe joint, the supports being continuous with corresponding ones of the pawls as viewed in a direction of a center axis of the ring of the retainer; and a connector connecting the pawls and the supports in a plurality of combinations continuous with each other. The connector is more elastically deformable than the pawls and the supports.
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公开(公告)号：US11319617B2
公开(公告)日：2022-05-03
申请号：US17276332
申请日：2019-09-19
申请人： HITACHI METALS, LTD.
发明人： Chuya Aoki , Tsuyoshi Fukui , Daigo Ohtoyo , Etsuo Fujita , Naoyuki Iwasa , Taku Hirosawa
摘要： The present invention provides a method for producing a ring-rolled material of an Fe—Ni based superalloy which inhibits AGG, has a fine-grained structure having an ASTM grain size number of at least 8, and has high circularity. A method for producing a ring-rolled material of an Fe—Ni based superalloy having a composition of an Alloy 718 comprises: heating a ring-shaped material for ring rolling having the composition, in a temperature range of 900° C. to 980° C., and performing finishing ring rolling, as a finishing ring rolling step; heating the ring-rolled material that has been subjected to the finishing ring rolling, in a temperature range of 980 to 1010° C.; and correcting ellipticalness while expanding a diameter of the ring-rolled material by using a ring expander.
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公开(公告)号：US20220102021A1
公开(公告)日：2022-03-31
申请号：US17486509
申请日：2021-09-27
申请人： Hitachi Metals, Ltd.
摘要： A multi-core cable includes a plurality of coaxial cables being arranged in parallel with each other, and a synthetic resin covering member that collectively covers the plurality of coaxial cables. Each coaxial cable includes a center conductor, an insulator covering an outer periphery of the center conductor, and a metal outer conductor covering an outer periphery of the insulator. The covering member holds the plurality of coaxial cables in such a manner that the plurality of coaxial cables are aligned side by side along a direction perpendicular to a longitudinal direction of the plurality of coaxial cables. At least a part of the outer conductors of the plurality of the coaxial cables respectively contacts the covering member.
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公开(公告)号：US20220099505A1
公开(公告)日：2022-03-31
申请号：US17488494
申请日：2021-09-29
申请人： NSK LTD. , HITACHI METALS LTD.
发明人： Kota Fukuda , Junji Ono , Shinji Okada , Teruyuki Nakamura , Yuta Sugiyama
摘要： A torque load member has a detected surface which is configured to face a magnetostrictive torque sensor. The detected surface is a shot peened surface whose magnetic anisotropy directed in a specific direction has been reduced by performing shot peening thereto at an arc height value of 0.31 mmA or more.
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公开(公告)号：US20220084719A1
公开(公告)日：2022-03-17
申请号：US17229059
申请日：2021-04-13
申请人： Hitachi Metals, Ltd.
摘要： A cable is composed of a cable core including one or more electric wires, a braided shield covering a periphery of the cable core and including braided metal wires, a sheath covering a periphery of the braided shield, and a cushion layer provided between the cable core and the braided shield. The cushion layer is composed of a braid including braided linear shape fiber yarns.
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