Patents by Inventor Tsutomu Hirano

Tsutomu Hirano has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20200247673
    Abstract: The polycrystalline cubic boron nitride contains a cubic boron nitride at a content greater than or equal to 98.5% by volume, and has an area rate S1 of crystal grains, the crystal grains having an equivalent circle diameter greater than or equal to 1 ?m, less than or equal to 20 area % at a cross section of the polycrystalline cubic boron nitride as observed with a scanning electron microscope at a magnification of 10,000.
    Type: Application
    Filed: June 18, 2019
    Publication date: August 6, 2020
    Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Tsutomu HIRANO, Satoru KUKINO
  • Publication number: 20200230710
    Abstract: A cutting tool holder according to one embodiment supports a cutting insert including a rake face, a flank face, and a cutting edge. The cutting tool holder according to one embodiment includes: a holder body having a seat face on which the cutting insert is placed; a pressing member that positions and fixes the cutting insert to the holder body; and a fixing member that fixes the pressing member to the holder body. The pressing member has: a front end portion close to the cutting edge; and a base end portion distant away from the cutting edge. The front end portion is provided with a first coolant ejection hole. A first flow path is provided inside the holder body. A coolant reservoir and a second flow path are provided inside the pressing member.
    Type: Application
    Filed: May 23, 2018
    Publication date: July 23, 2020
    Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Tsutomu HIRANO, Satoru KUKINO, Yosuke SHIMAMOTO
  • Publication number: 20200215618
    Abstract: A cutting insert according to one embodiment includes: a rake face; a flank face continuous to the rake face; and a cutting edge constituted of a ridgeline between the rake face and the flank face. A coolant flow path is provided inside the cutting insert. One end portion of the coolant flow path opens in the flank face to form a coolant ejection hole. The flank face is provided with a coolant guide groove extending from the coolant ejection hole toward the cutting edge with a base end portion of the coolant guide groove being connected to the coolant ejection hole and with a front end portion of the coolant guide groove being disposed at a position close to the cutting edge relative to the base end portion.
    Type: Application
    Filed: May 18, 2018
    Publication date: July 9, 2020
    Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Tsutomu HIRANO, Satoru KUKINO
  • Patent number: 10625349
    Abstract: An object is to prolong the life of a cubic boron nitride cutting tool used for cutting a heat-resistant alloy. A cubic boron nitride cutting tool includes an edge tip made of a sintered cubic boron nitride compact including cubic boron nitride particles; and a base metal that holds the edge tip at a corner portion of the base metal, wherein a cutting edge formed on the edge tip of the tool has a positive rake angle.
    Type: Grant
    Filed: July 3, 2018
    Date of Patent: April 21, 2020
    Assignee: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Tsutomu Hirano, Katsumi Okamura, Naoki Watanobe
  • Publication number: 20190324646
    Abstract: A memory access device for controlling accesses to a memory having a plurality of banks by a plurality of processing blocks including at least one high-priority processing block, connected to a common data bus, and outputting access requests for requesting access to the memory has a memory controller connected to the data bus to control access to the connected memory in response to the access requests while outputting operation information of the memory; and an access selection unit configured to change a designation sequence of the banks according to the operation information at the time when the high-priority processing block continuously accesses the plurality of banks and output the access requests in the changed sequence, wherein the access selection unit is configured to further change the designation sequence according to the changing operation information during a period while the access requests are not accepted by the memory controller.
    Type: Application
    Filed: July 1, 2019
    Publication date: October 24, 2019
    Applicant: OLYMPUS CORPORATION
    Inventors: Shinsuke Homma, Tomonori Yonemoto, Junichi Shimoyama, Akira Ueno, Tsutomu Kuroki, Tomomi Hirano
  • Publication number: 20190184469
    Abstract: A cutting tool shim is to be disposed between a cutting insert and a holder and to be fixed to the holder. The ridgeline between the flank face and the rake face forms a cutting edge. The cutting edge includes an arc-shaped portion. A coolant supply path for jetting coolant to the arc-shaped portion is provided in the cutting tool shim, the coolant being supplied from the holder. The coolant supply path includes a lead-in port for leading the coolant from the holder to the coolant supply path, and a jetting port for arc-shaped portion for jetting the coolant to the arc-shaped portion. The jetting port for arc-shaped portion has a curved shape along the arc-shaped portion. The distance between the jetting port for arc-shaped portion and the arc-shaped portion is not less than 2.2 mm and not more than 8.1 mm.
    Type: Application
    Filed: July 31, 2017
    Publication date: June 20, 2019
    Inventors: Tsutomu Hirano, Satoru Kukino, Tomoyuki Fukuyama, Takuma Kishimoto
  • Publication number: 20180311744
    Abstract: An object is to prolong the life of a cubic boron nitride cutting tool used for cutting a heat-resistant alloy. A cubic boron nitride cutting tool includes an edge tip made of a sintered cubic boron nitride compact including cubic boron nitride particles; and a base metal that holds the edge tip at a corner portion of the base metal, wherein a cutting edge formed on the edge tip of the tool has a positive rake angle.
    Type: Application
    Filed: July 3, 2018
    Publication date: November 1, 2018
    Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Tsutomu HIRANO, Katsumi OKAMURA, Naoki WATANOBE
  • Patent number: 10010940
    Abstract: An object is to prolong the life of a cubic boron nitride cutting tool used for cutting a heat-resistant alloy. A cubic boron nitride cutting tool includes an edge tip made of a sintered cubic boron nitride compact having a thermal conductivity within the range of 20 to 70 W/m·K and including cubic boron nitride particles having an average particle diameter within the range of 0.5 ?m to 2 ?m; and a base metal that holds the edge tip at a corner portion of the base metal, wherein a cutting edge formed on the edge tip of the tool has a positive rake angle.
    Type: Grant
    Filed: March 25, 2014
    Date of Patent: July 3, 2018
    Assignee: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Tsutomu Hirano, Katsumi Okamura, Naoki Watanobe
  • Patent number: 9522850
    Abstract: Provided is a cubic boron nitride sintered body having good wear resistance and fracture resistance. A method for manufacturing a cubic boron nitride sintered body of the present invention is a method for manufacturing a cubic boron nitride sintered body having a cubic boron nitride particle content of 80% by volume or more and 99% by volume or less. The method includes a first step of preparing cubic boron nitride particles; a second step of coating surfaces of the cubic boron nitride particles with a coating material so as to obtain coated particles; a third step of mixing the coated particles and a binder to obtain a mixture; and a fourth step of sintering the mixture.
    Type: Grant
    Filed: March 12, 2014
    Date of Patent: December 20, 2016
    Assignee: Sumitomo Electric Hardmetal Corp.
    Inventors: Yusuke Matsuda, Katsumi Okamura, Tsutomu Hirano, Tomohiro Fukaya
  • Publication number: 20160052827
    Abstract: Provided is a cubic boron nitride sintered body having good wear resistance and fracture resistance. A method for manufacturing a cubic boron nitride sintered body of the present invention is a method for manufacturing a cubic boron nitride sintered body having a cubic boron nitride particle content of 80% by volume or more and 99% by volume or less. The method includes a first step of preparing cubic boron nitride particles; a second step of coating surfaces of the cubic boron nitride particles with a coating material so as to obtain coated particles; a third step of mixing the coated particles and a binder to obtain a mixture; and a fourth step of sintering the mixture.
    Type: Application
    Filed: March 12, 2014
    Publication date: February 25, 2016
    Inventors: Yusuke MATSUDA, Katsumi OKAMURA, Tsutomu HIRANO, Tomohiro FUKAYA
  • Publication number: 20150239050
    Abstract: An object is to prolong the life of a cubic boron nitride cutting tool used for cutting a heat-resistant alloy. A cubic boron nitride cutting tool includes an edge tip made of a sintered cubic boron nitride compact having a thermal conductivity within the range of 20 to 70 W/m·K and including cubic boron nitride particles having an average particle diameter within the range of 0.5 ?m to 2 ?m; and a base metal that holds the edge tip at a corner portion of the base metal, wherein a cutting edge formed on the edge tip of the tool has a positive rake angle.
    Type: Application
    Filed: March 25, 2014
    Publication date: August 27, 2015
    Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Tsutomu Hirano, Katsumi Okamura, Naoki Watanobe
  • Patent number: 7811826
    Abstract: The present invention provides a fast and simple method for fractional measurement of small particle low density lipoprotein (LDL). The method for quantifying small particle LDL in a test sample entails a first step of separating the small particle LDL from other low density lipoproteins, and a second step of measuring cholesterol, triglycerides or proteins in the separated small particle LDL.
    Type: Grant
    Filed: February 10, 2009
    Date of Patent: October 12, 2010
    Assignee: Denka Seiken Co., Ltd.
    Inventors: Yasuki Itoh, Tsutomu Hirano
  • Patent number: 7679868
    Abstract: A ground faulty interrupting function is returned to a normal standby state in a short time after a movable contact (8) tripped in detecting electrical leak is returned to a closed position. A tripping coil (10) which moves the contact (8) provided on an output line (2) to a shutdown position is included. A current transformer (12) is provided on a downstream of the contact (8). A circuit (20) energizes the coil (10) when the leak current are detected. A reset signal forming circuit (22) outputs a reset signal to the gate signal forming circuit (20) when the contact (8) is returned to a connection position. The circuit (20) obtains power from the upstream side of the contact (8). LED (16) is lit when the contact (8) is at the shutdown position, and LED (16) end display when the contact (8) is returned to the normal position.
    Type: Grant
    Filed: December 10, 2004
    Date of Patent: March 16, 2010
    Assignee: Honda Motor Co., Ltd.
    Inventors: Kouichi Asai, Yoshinori Nakagawa, Tsutomu Hirano
  • Publication number: 20090148959
    Abstract: The object of the present invention is to provide a fast and simple method for fractional measurement of a small particle LDL. A method for quantifying a small particle low density lipoprotein in a test sample, comprising a first step for separating the small particle low density lipoprotein from other low density lipoproteins, and a second step for measuring cholesterol, triglycerides or proteins in the separated small particle low density lipoprotein.
    Type: Application
    Filed: February 10, 2009
    Publication date: June 11, 2009
    Inventors: Yasuki Itoh, Tsutomu Hirano
  • Patent number: 7183668
    Abstract: A detecting means easily detects the abnormality of a generator having a plurality of power supply units. Each of the power supply units includes one of a plurality of output windings L1 to L4, which are wound independently of each other around single iron core, and one of rectifiers 2 to 5 that are provided in correspondence to the output windings and produces an integrated output. Controllers 33 to 35 control the rectifiers such that the output voltage corresponds with a target. A voltage deviation judgment section 37 outputs the abnormal signal when one of the output voltages of the rectifiers 2 to 5 is different from remains. A current deviation judgment section 39 outputs the abnormal signal when one of the output currents of the rectifiers 2 to 5 is different from remains. When the abnormal signal is detected, the outputs of the rectifiers 2 to 5 are stopped.
    Type: Grant
    Filed: May 24, 2005
    Date of Patent: February 27, 2007
    Assignee: Honda Motor Co., Ltd.
    Inventors: Makoto Ogawa, Junichi Eguchi, Tsutomu Hirano, Toshio Inoue
  • Publication number: 20050264961
    Abstract: A detecting means easily detects the abnormality of a generator having a plurality of power supply units. Each of the power supply units includes one of a plurality of output windings L1 to L4, which are wound independently of each other around single iron core, and one of rectifiers 2 to 5 that are provided in correspondence to the output windings and produces an integrated output. Controllers 33 to 35 control the rectifiers such that the output voltage corresponds with a target. A voltage deviation judgment section 37 outputs the abnormal signal when one of the output voltages of the rectifiers 2 to 5 is different from remains. A current deviation judgment section 39 outputs the abnormal signal when one of the output currents of the rectifiers 2 to 5 is different from remains. When the abnormal signal is detected, the outputs of the rectifiers 2 to 5 are stopped.
    Type: Application
    Filed: May 24, 2005
    Publication date: December 1, 2005
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Makoto Ogawa, Junichi Eguchi, Tsutomu Hirano, Toshio Inoue
  • Publication number: 20050152079
    Abstract: A ground faulty interrupting function is returned to a normal standby state in a short time after a movable contact (8) tripped in detecting electrical leak is returned to a closed position. A tripping coil (10) which moves the contact (8) provided on an output line (2) to a shutdown position is included. A current transformer (12) is provided on a downstream of the contact (8). A circuit (20) energizes the coil (10) when the leak current are detected. A reset signal forming circuit (22) outputs a reset signal to the gate signal forming circuit (20) when the contact (8) is returned to a connection position. The circuit (20) obtains power from the upstream side of the contact (8). LED (16) is lit when the contact (8) is at the shutdown position, and LED (16) end display when the contact (8) is returned to the normal position.
    Type: Application
    Filed: December 10, 2004
    Publication date: July 14, 2005
    Inventors: Kouichi Asai, Yoshinori Nakagawa, Tsutomu Hirano
  • Patent number: 6844650
    Abstract: A multipolar magnetogenerator, which is operable under sufficient performance of its capability, permitting simultaneous extraction of various voltage outputs and is excellent in spatial efficiency, includes a magnet rotor (3) as an outer rotor and a multipolar stator (10) opposed to the radially inner surface of the magnet rotor (3) to permit extraction of an output of generated power from output windings (30) wound around the stator core 10. A transformer core (21) has a primary winding (31) and secondary windings (32, 33) wound therearound and is located adjacent the radially inner circumferential surface of the stator (10), which is remote from the magnet rotor (3), and the output windings (30) are connected to the primary wiring (32) such that transformed outputs are extracted from the secondary windings (32, 33).
    Type: Grant
    Filed: April 14, 2003
    Date of Patent: January 18, 2005
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Tsutomu Hirano, Yasuhiro Shinkawa
  • Publication number: 20040000831
    Abstract: A multipolar magnetogenerator, which is operable under sufficient performance of its capability, permitting simultaneous extraction of various voltage outputs and is excellent in spatial efficiency, includes a magnet rotor (3) as an outer rotor and a multipolar stator (10) opposed to the radially inner surface of the magnet rotor (3) to permit extraction of an output of generated power from output windings (30) wound around the stator core 10. A transformer core (21) has a primary winding (31) and secondary windings (32, 33) wound therearound and is located adjacent the radially inner circumferential surface of the stator (10), which is remote from the magnet rotor (3), and the output windings (30) are connected to the primary wiring (32) such that transformed outputs are extracted from the secondary windings (32, 33).
    Type: Application
    Filed: April 14, 2003
    Publication date: January 1, 2004
    Applicant: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Tsutomu Hirano, Yasuhiro Shinkawa
  • Patent number: 6392173
    Abstract: In an automatic switchover device for a power source designed to automatically switch over systems for supplying electric power to an electric load in such a manner that electric power output from an engine generator is supplied to the electric load upon power failure of a regular power source system, a seesaw-type turn member is mounted for turning movement between a first turned position in which it permits a common contact to be electrically connected to a first individual contact and a second turned position in which it permits the common contact to be electrically connected to a second individual contact. First and second solenoids capable of exerting an electromagnetic force for driving the seesaw-type turn member toward one of the first and second turned position, each include a plunger which has an operating portion enabling the plunger to be pushed in from the outside, thereby enabling an operator's manual switching.
    Type: Grant
    Filed: August 21, 2001
    Date of Patent: May 21, 2002
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Tsutomu Hirano, Koichi Asai, Hiroyuki Eguchi