Patents Assigned to Hitachi Metal, Ltd.
  • Publication number: 20160236274
    Abstract: A casting apparatus for producing a casting by pouring a metal melt into a gas-permeable casting mold by gravity, comprising: a gas-permeable casting mold comprising a cavity including a sprue composed of a tubular portion and a cup portion having a larger diameter than that of the tubular portion to receive the metal melt, a runner constituting a flow path of the metal melt supplied through the sprue, and a product-forming cavity to be filled with the metal melt sent through the runner; a means for pouring the metal melt into the sprue by gravity; a gas-blowing unit comprising a gas-ejecting member to be connected to the sprue; and a mechanism for moving the gas-ejecting member; the gas-ejecting-member-moving mechanism placing the gas-ejecting member at a position just above the tubular portion and not interfering with gravity pouring of the metal melt, and moving it downward for connection to the tubular portion; the gas-blowing unit having blowing a gas to fill the product-forming cavity with the metal mel
    Type: Application
    Filed: September 30, 2014
    Publication date: August 18, 2016
    Applicant: HITACHI METALS, LTD.
    Inventors: Masahide KAWABATA, Toru IWANAGA, Kiyoshi SUEHARA, Yutaka MORITA, Masafumi KOKUBO
  • Patent number: 9417416
    Abstract: An optoelectrical composite cable includes an optical fiber; a resin inner cylinder that accommodates the optical fiber; a plurality of electrical lines arranged outside the inner cylinder so as to cover a surrounding of the inner cylinder, and a tubular outer cylinder that collectively covers the plurality of electrical lines. The plurality of electrical lines include pairs of electrical lines, and the electrical lines constitute at least one of the pairs of electrical lines have a larger outer diameter than the other electrical lines and are arranged at opposing positions, with the inner cylinder being interposed therebetween.
    Type: Grant
    Filed: March 13, 2014
    Date of Patent: August 16, 2016
    Assignee: HITACHI METALS, LTD.
    Inventors: Hiroki Yasuda, Kouki Hirano, Hiroshi Sakaguchi
  • Patent number: 9417108
    Abstract: In a mass flow meter comprising two flow sensor units with identical specifications, flow rate deviations between these two flow sensor units are initially measured at various mass flow rates under a circumstance having the same fluctuating factors as those when a mass flow is actually measured. Subsequently, based on these flow rate deviations, a correction value for matching the values of the mass flow rates measured by these two flow sensor units is calculated and stored in a data storage device. Thereafter, when measuring a mass flow rate, a flow rate deviation, from which the influence by the individual difference in the response to a fluctuating factor between these two flow sensor units has been removed, is calculated by correcting a measured value based on the correction value. The existence or non-existence of an occurrence of a malfunction is judged based on whether the flow rate deviation exceeds a predetermined threshold value t or not.
    Type: Grant
    Filed: March 27, 2015
    Date of Patent: August 16, 2016
    Assignee: Hitachi Metals, Ltd.
    Inventor: Hiroyuki Ito
  • Patent number: 9418786
    Abstract: An R—Fe—B based porous magnet according to the present invention has an aggregate structure of Nd2Fe14B type crystalline phases with an average grain size of 0.1 ?m to 1 ?m. At least a portion of the magnet is porous and has micropores with a major axis of 1 ?m to 20 ?m.
    Type: Grant
    Filed: August 16, 2012
    Date of Patent: August 16, 2016
    Assignee: HITACHI METALS, LTD.
    Inventors: Takeshi Nishiuchi, Noriyuki Nozawa, Satoshi Hirosawa, Tomohito Maki, Katsunori Bekki
  • Patent number: 9419491
    Abstract: A motor connecting member, which connects a motor winding and a terminal block, includes a terminal to be connected to the terminal block, a winding connecting portion to be connected to the motor winding, and an extended portion extending between the terminal and the winding connecting portion. The extended portion is made by plastically deforming a single wire having a circular cross section, and is bent in a predetermined shape fitted for connection between an end of the motor winding connected with the winding connecting portion and the terminal block.
    Type: Grant
    Filed: April 11, 2014
    Date of Patent: August 16, 2016
    Assignee: Hitachi Metals, Ltd.
    Inventors: Kenichi Egami, Kazuhiko Tomita, Kazuyuki Watanabe
  • Patent number: 9415444
    Abstract: A method for producing a sintered R-T-B based magnet includes the steps of: providing a sintered R-T-B based magnet body 1; providing an RH diffusion source 2 including a metal or an alloy of a heavy rare-earth element RH (which is at least one of Dy an Tb); loading the sintered magnet body 1 and the RH diffusion source 2 into a processing chamber 3 so that the magnet body 1 and the diffusion source 2 are movable relative to each other and brought close to, or in contact with, each other; and performing an RH diffusion process by conducting a heat treatment on the sintered R-T-B based magnet body 1 and the RH diffusion source 2 at a temperature of 500° C. to 850° C. for at least 10 minutes while moving the magnet body 1 and the diffusion source 2 either continuously or discontinuously in the processing chamber 3.
    Type: Grant
    Filed: July 12, 2010
    Date of Patent: August 16, 2016
    Assignee: HITACHI METALS, LTD.
    Inventor: Futoshi Kuniyoshi
  • Publication number: 20160230085
    Abstract: A production method of rare earth oxysulfide comprising a step of mixing a rare earth compound with sulfuric acid and/or sulfate in such a proportion that sulfate ions are 0.75-1.75 mol to 1 mol of a rare earth element, thereby preparing a reaction solution to obtain a product; a step of calcining the product to obtain calcined powder; and a step of reducing the calcined powder to obtain rare earth oxysulfide.
    Type: Application
    Filed: September 10, 2014
    Publication date: August 11, 2016
    Applicant: HITACHI METALS, LTD.
    Inventors: Shinsuke TERAZAWA, Hideo NITTA
  • Publication number: 20160233514
    Abstract: An object of the present invention is to provide an electrolytic aluminum foil having no significant difference in properties between one surface and the other surface thereof, and also a method for producing the same. Another object is to provide a current collector for an electrical storage device using the electrolytic aluminum foil, an electrode for an electrical storage device, and an electrical storage device. An electrolytic aluminum foil of the present invention as a means for achieving the object is characterized in that both surfaces of the foil have L* values of 86.00 or more in the L*a*b* color space (SCI method).
    Type: Application
    Filed: February 19, 2015
    Publication date: August 11, 2016
    Applicant: Hitachi Metals, Ltd.
    Inventors: Atsushi OKAMOTO, Junichi MATSUDA
  • Patent number: 9409257
    Abstract: Provided is a wire rod for an I-type oil ring, which includes right and left rail portions and a web portion connecting the rail portions, which has an oil hole or a molten through hole formed in the web portion, and which has a circumscribing circle diameter of 10 mm or less in its transverse contour. The molten through hole has such a remolten portion formed on its exit side as encloses the exit of the molten through hole. The remolten portion exceeds such a molten portion in the transverse section along the center of the molten through hole as is formed in the molten through hole, and is formed to have 200 ?m or less from the outer circumference of the molten through hole and 100 ?m or less in the depth direction of the molten through hole.
    Type: Grant
    Filed: November 16, 2015
    Date of Patent: August 9, 2016
    Assignee: HITACHI METALS, LTD.
    Inventors: Masanori Ochiai, Makoto Sasaki, Tomoyuki Satoh
  • Patent number: 9413661
    Abstract: A network relay device capable of easily recognizing a state of hash value collision is provided. Each of a plurality of entries contained in an address table includes: a first area in which first information is registered, the first information indicating a relation between a plurality of ports and MAC addresses existing beyond the plurality of ports; and a second area in which second information is registered. In learning a transmission-source MAC address of a frame received at a port, a frame processing unit calculates a hash value by using the transmission-source MAC address first. Next, if a MAC address different from the transmission-source MAC address has been registered in the first area of an entry corresponding to the hash value, the frame processing unit registers the second information in the second area.
    Type: Grant
    Filed: February 3, 2014
    Date of Patent: August 9, 2016
    Assignee: Hitachi Metals, Ltd.
    Inventor: Makoto Yasuda
  • Patent number: 9406414
    Abstract: An insulated wire for vehicle use includes a conductor and an insulating layer disposed on an outer circumference of the conductor. The insulating layer comprises a halogen-free flame retardant cross-linkable resin composition containing a base polymer, and a silane coupling agent and a metal hydroxide which are added to the base polymer. The base polymer includes, as major components, (a) an ethylene-vinyl acetate copolymer (EVA) and (b) an acid-modified olefin resin having a Tg of ?55° C. or lower at a ratio (a):(b) of 70:30 to 100:0 and has an acetic acid content (VA) of 50% to 70% by mass. The silane-coupling agent is added in an amount of 1 to 5 parts by mass and the metal hydroxide is added in an amount of 100 to 250 parts by mass relative to 100 parts by mass of the base polymer.
    Type: Grant
    Filed: June 12, 2013
    Date of Patent: August 2, 2016
    Assignee: HITACHI METALS, LTD.
    Inventors: Makoto Iwasaki, Kentaro Segawa, Hitoshi Kimura
  • Publication number: 20160218369
    Abstract: An object of the present invention is to provide a thin electrolytic aluminum foil having a thickness of 20 ?m or less, which has excellent flexibility so that winding-up is not hindered by bending or twisting of the foil. Another object is to provide a current collector for an electrical storage device using the electrolytic aluminum foil, an electrode for an electrical storage device, and an electrical storage device. An electrolytic aluminum foil of the present invention as a means for achieving the object is an electrolytic aluminum foil having a thickness of 20 ?m or less, characterized in that the elastic modulus is smaller in both surface regions than in a center region in the thickness direction of the foil, and the difference in elastic modulus between the center region and each surface region of the foil as measured by a nanoindentation method is 8.0 GPa or less.
    Type: Application
    Filed: February 19, 2015
    Publication date: July 28, 2016
    Applicant: Hitachi Metals, Ltd.
    Inventors: Junichi MATSUDA, Atsushi OKAMOTO
  • Patent number: 9401235
    Abstract: A sintered ferrite magnet having a main phase composed of ferrite having a hexagonal, M-type magnetoplumbite structure, a grain boundary phase containing Si and Ca with a lower atomic ratio of La than in said main phase, and a third phase containing La at a higher atomic ratio than in said main phase, and a method for producing a sintered ferrite magnet having said third phase by calcining starting materials with more La than Ca, adding more than 1% and 1.8% or less by mass of SiO2 and 1-2% by mass (calculated as CaO) of CaCO3 to the calcined body, and pulverizing, molding and sintering it.
    Type: Grant
    Filed: December 26, 2011
    Date of Patent: July 26, 2016
    Assignee: HITACHI METALS, LTD.
    Inventors: Yoshinori Kobayashi, Tsunehiro Kawata
  • Patent number: 9401581
    Abstract: A jig for handling a CAN-package semiconductor laser having a semiconductor laser mounted on a pedestal, a cap which is put on one surface of the pedestal and covers the semiconductor laser, and a lead pin which is electrically connected to the semiconductor laser and protrudes from the other surface of the pedestal includes: a base part provided with a recessed part to which the pedestal is fitted; a terminal pad provided on a recessed-part bottom surface and being in contact with the lead pin; and a terminal pin electrically connected to the terminal pad and protruding from the base part.
    Type: Grant
    Filed: August 26, 2014
    Date of Patent: July 26, 2016
    Assignee: Hitachi Metals, Ltd.
    Inventors: Kenichi Tamura, Yoshinori Sunaga
  • Publication number: 20160207084
    Abstract: A centrifugally cast, hot-rolling composite roll comprising an outer layer formed by a centrifugal casting method, and an inner layer made of ductile cast iron and integrally fused to the outer layer; the outer layer having a chemical composition comprising by mass 1.6-3% of C, 0.3-2.5% of Si, 0.3-2.5% of Mn, 0.1-5% of Ni, 2.8-7% of Cr, 1.8-6% of Mo, 3.3-6.5% of V, and 0.02-0.12% of B (or 0.01-0.12% of B, and 0.05-02% of S), the balance being Fe and inevitable impurities, and meeting the relation expressed by Cr/(Mo+0.5W)??2/3[C?0.2(V+1.19Nb)]+11/6, wherein W=0, and Nb=0, when W and Nb are not contained, and containing by area 1-15% of MC carbide, 0.5-20% of carboboride, and 1-25% of Cr-based carbide.
    Type: Application
    Filed: September 17, 2014
    Publication date: July 21, 2016
    Applicant: HITACHI METALS, LTD.
    Inventors: Toshiyuki HATTORI, Nozomu ODA, Yasunori NOZAKI
  • Patent number: 9395692
    Abstract: A hairspring material for a mechanical timepiece includes an alloy which contains 37.5 to 39.5% by mass of Ni, 9.2 to 9.9% by mass of Cr, 0.35 to 0.55% by mass of Ti, and 0.6 to 0.9% by mass of Be, based on the total amount of the alloy, and contains in the remainder Fe and unavoidable impurities, the alloy being an alloy containing, as the unavoidable impurities, C (carbon), Mn in an amount of more than 0% by mass but not more than 0.5% by mass and Al in an amount of more than 0% by mass but less than 0.03% by mass, the amount of the C (carbon) being limited to not more than 0.03% by mass. The hairspring material can provide a smaller variation in Young's modulus than that of conventional hairspring materials.
    Type: Grant
    Filed: August 29, 2013
    Date of Patent: July 19, 2016
    Assignees: CITIZEN HOLDINGS CO., LTD., CITIZEN WATCH CO., LTD., HITACHI METALS, LTD., HITACHI METALS NEOMATERIAL, LTD.
    Inventors: Yoshirou Hirai, Shinichi Matsumoto, Kenji Tsuchiya, Shinji Yamamoto
  • Patent number: 9396841
    Abstract: A noise suppression cable includes a plurality of twisted pair wires, an inclusion that includes an insulating material and a magnetic powder and separates the plurality of twisted pair wires, and a sheath that includes an insulating material and covers a periphery of the plurality of twisted pair wires and the inclusion.
    Type: Grant
    Filed: January 27, 2015
    Date of Patent: July 19, 2016
    Assignee: Hitachi Metals, Ltd.
    Inventors: Yosuke Sumi, Naofumi Chiwata, Katsuya Akimoto, Katsutoshi Nakatani, Kenji Ajima, Hiroshi Okikawa, Yasuharu Muto
  • Patent number: 9395255
    Abstract: An on-vehicle detector includes a torque detecting portion for magnetically detecting a torque transmitted to a rotating shaft rotated by steering operation, and a rotation detecting portion for magnetically detecting a rotation of the rotating shaft. The rotation detecting portion includes a magnet with a pair of magnetic poles and a magnetic detection element, the magnet being disposed on a side of the rotating shaft so as to rotate simultaneously with the rotating shaft and the magnetic detection element being disposed on a side of the rotating shaft to detect a change in magnetic flux density caused by the magnet approaching or moving away in accordance with the rotation of the rotating shaft. The magnet is disposed such that the pair of magnetic poles is aligned along a circumferential direction of the rotating shaft.
    Type: Grant
    Filed: October 23, 2014
    Date of Patent: July 19, 2016
    Assignees: HITACHI METALS, LTD., JTEKT CORPORATION
    Inventors: Yuta Kataoka, Kensaku Hotta
  • Patent number: 9393645
    Abstract: The disclosed junction material, manufacturing method thereof, and manufacturing method of junction structure utilize lead-free materials and ensure a high reliability of the junction between a semiconductor element and a frame or substrate, or, between a metal plate and another metal plate. For junctions between a semiconductor element and a frame or substrate, by using as the JUNCTION MATERIAL a laminate material comprising a Zn-based metallic layer (101), Al-based metallic layers (102a, 102b) on both sides thereof, and X-based metallic layers (103a, 103b) (X=Cu, Au, Ag or Sn) on the outside of both the Al-based metallic layers (102a, 102b), even in an oxygen-rich environment, the superficial X-based metallic layers protect the Zn and Al from oxidation until said junction material melts, preserving the wettability and bondability of said junction material as solder and securing the high reliability of the junction.
    Type: Grant
    Filed: July 28, 2011
    Date of Patent: July 19, 2016
    Assignee: Hitachi Metals, Ltd.
    Inventors: Takuto Yamaguchi, Masahide Okamoto, Osamu Ikeda, Hiromitsu Kuroda, Kazuma Kuroki, Shohei Hata, Yuichi Oda
  • Publication number: 20160203902
    Abstract: The present invention provides an Fe-based amorphous transformer magnetic core formed by stacking Fe-based amorphous alloy thin strips and satisfying the following (1) to (3) in a direct current B—H curve measured by applying a magnetic field of 80 A/m to the magnetic core: B80?1.1 T ??(1) 0.5 T?Br?0.7 T ??(2) B80-Br?0.6 T ??(3) wherein B80 represents a magnetic flux density (T) obtained when magnetization is performed in the magnetic field of 80 A/m, and Br represents a residual magnetic flux density (T) obtained when a magnetic field is changed to 0 A/m after magnetization is performed in a magnetic field of 80 A/m.
    Type: Application
    Filed: August 7, 2014
    Publication date: July 14, 2016
    Applicants: HITACHI METALS, LTD., JIBU ELECTRIC CO., LTD.
    Inventors: Daichi AZUMA, Yuji NAGATA, Kengo TAKAHASHI