Patents by Inventor Atsushi Ishikawa

Atsushi Ishikawa 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: 20190148999
    Abstract: A rotor includes a rotor core having a cylindrical outer circumferential surface around an axis line, the rotor core further having a first end and a second end that are both ends in a direction of the axis line, a first permanent magnet disposed in a region of the rotor core having the first end, and a second permanent magnet disposed in another region of the rotor core having the second end. The first permanent magnet is inclined so that a distance from the axis line to the first permanent magnet increases in a direction along the axis line toward the first end. The second permanent magnet is inclined so that a distance from the axis line to the second permanent magnet increases in a direction along the axis line toward the second end.
    Type: Application
    Filed: July 11, 2016
    Publication date: May 16, 2019
    Applicant: Mitsubishi Electric Corporation
    Inventor: Atsushi ISHIKAWA
  • Publication number: 20190089215
    Abstract: A motor includes a stator and a rotor provided inside the stator. The stator includes a stator core, and a coil made of aluminum and wound around the stator core in distributed winding. The rotor includes a rotor core, and a first number of permanent magnets mounted in the rotor core. The coil of the stator is covered with varnish. The first number is greater than or equal to 6, and is less than or equal to 10. Each of the first number of permanent magnets of the rotor contains neodymium, iron, boron and dysprosium, and has a dysprosium content of 0% to 4% by weight.
    Type: Application
    Filed: April 6, 2016
    Publication date: March 21, 2019
    Inventor: Atsushi ISHIKAWA
  • Publication number: 20190006896
    Abstract: In an electric motor, a first magnet and a second magnet are accommodated in magnet accommodating apertures of a rotor core. On outer circumferential core portions that exist on a radially outer side of the magnet accommodating apertures, two slits as a pair of first slits, and two slits that are respectively adjacent to each of the first slits are disposed circumferentially outside the pair of first slits as a pair of second slits. The outer circumferential core portions include: a first magnetic portion that exists between the pair of first slits; and a pair of second magnetic portions that respectively exist between the first slits and the second slits. An inter-magnet space portion that exists between the first magnet and the second magnet is positioned within a range of the first magnetic portion in the circumferential direction of the rotor.
    Type: Application
    Filed: February 12, 2016
    Publication date: January 3, 2019
    Inventors: Kazuhiko BABA, Masahiro NIGO, Kazuchika TSUCHIDA, Atsushi ISHIKAWA
  • Publication number: 20180362245
    Abstract: A glass slide set according to one or more embodiments may include: a stack of glass slides; and a packaging box that houses the stack. The packaging box may include: an exit opening through which the stack exits; and a push opening through which the stack is pushed, so that the stack exits through the exit opening.
    Type: Application
    Filed: June 14, 2018
    Publication date: December 20, 2018
    Applicant: SYSMEX CORPORATION
    Inventors: Kazuhiro OGUCHI, Atsushi ISHIKAWA, Shogo KUBOTA, Seiya SHINABE
  • Patent number: 10116176
    Abstract: In a permanent magnet embedded electric motor, a rotor iron core of a rotor disposed on an inner diameter side of a stator includes: a plurality of first slits that are formed on a radial direction outer side of a magnet insertion hole, and communicate with the magnet insertion hole; a plurality of second slits formed at positions opposed to and spaced apart from the first slits; inter-slit iron core portions formed between the first slits and the second slits; outer side iron core portions formed between the second slits and an outer circumferential surface of the rotor iron core; space portions communicating with rotating direction end portions of the magnet insertion hole; and thin iron core portions that are formed between the space portions and the outer circumferential surface of the rotor iron core, and extend in a rotating direction.
    Type: Grant
    Filed: October 7, 2014
    Date of Patent: October 30, 2018
    Assignee: Mitsubishi Electric Corporation
    Inventors: Kazuhiko Baba, Masahiro Nigo, Atsushi Ishikawa
  • Patent number: 10103588
    Abstract: An interior permanent magnet motor includes a stator and a rotor. The rotor includes a rotor core having a plurality of magnet receiving holes, and a plurality of permanent magnets are received in each of the magnet receiving holes. A plurality of slits are formed at a part between an outer peripheral surface of the rotor and an outer-side defining line of the each of the magnet receiving holes. At least one space portion is secured between the plurality of permanent magnets, and the space portion is opposed to any one of the plurality of slits in a direction parallel to a magnetic pole center line.
    Type: Grant
    Filed: December 5, 2013
    Date of Patent: October 16, 2018
    Assignee: Mitsubishi Electric Corporation
    Inventors: Kazuhiko Baba, Masahiro Nigo, Kazuchika Tsuchida, Atsushi Ishikawa
  • Patent number: 10052732
    Abstract: A cooling gas is fed from an ejection nozzle into the interior of a through-hole which is formed in a radially central portion of a main spindle, and which penetrates through said main spindle in an axial direction. The cooling gas passes through radial venting holes provided in a plurality of locations, in the circumferential direction, in an axially intermediate portion of the main spindle, is fed into axial venting holes provided in a plurality of locations, in the circumferential direction, extending from one axial-direction end of the main spindle to an intermediate portion thereof, is caused to flow through the axial venting holes, and is discharged from discharge holes.
    Type: Grant
    Filed: February 15, 2016
    Date of Patent: August 21, 2018
    Assignee: NSK LTD.
    Inventors: Hidekazu Suzuki, Atsushi Ishikawa
  • Publication number: 20180202918
    Abstract: In an embodiment of the present disclosure, a structure comprising an infrared ray absorption surface is provided for use in infrared spectroscopy, and the infrared ray absorption surface absorbs infrared rays in a detection wavelength range that covers the response wavelengths of a substance to be detected. The structure comprises, for example, a metal substrate having a metal surface, metal components arranged at positions facing the metal surface, and a support part that supports each of the metal components relative to the metal surface, and a resonator for the infrared ray absorption surface is formed by the metal substrate, the metal components and the support parts. Additionally, in an embodiment of the present disclosure, an infrared spectroscopy method wherein a specimen is brought into close contact to the infrared ray absorption surface of the structure is also provided.
    Type: Application
    Filed: July 7, 2016
    Publication date: July 19, 2018
    Inventors: Takuo TANAKA, Atsushi ISHIKAWA
  • Patent number: 10020699
    Abstract: In an interior permanent magnet motor, a plurality of slits are formed between a rotor outer peripheral surface of a rotor and a radially-outer insertion hole contour surface of a magnet insertion hole. Assuming that a total area of the plurality of slits per magnetic pole is represented by Ss, and an area of a region in a rotor core on a radially outer side with respect to the corresponding one magnet insertion hole is represented by Si, the plurality of slits are formed so as to satisfy a relationship of 0.35?Ss/Si?0.5.
    Type: Grant
    Filed: September 25, 2013
    Date of Patent: July 10, 2018
    Assignee: Mitsubishi Electric Corporation
    Inventors: Atsushi Ishikawa, Masahiro Nigo, Kazuchika Tsuchida, Kazuhiko Baba
  • Publication number: 20180111868
    Abstract: To provide a method for manufacturing a medical glass container prevented from breakage and deformation and a fire blasting device.
    Type: Application
    Filed: April 21, 2016
    Publication date: April 26, 2018
    Inventors: Kazuhisa MORIUCHI, Yoshio INOUE, Atsushi ISHIKAWA, Yoshihiro KAWAI
  • Publication number: 20180111867
    Abstract: [Object] To provide a means manufacturing a medical glass container with less generation of a crack. [Solution] A method for manufacturing a medical glass container includes a first process of moving the tip of an ignited point burner 30 from a standby position where a flame 31 does not contact a vial 10 to a position where the tip of the ignited point burner 30 faces an opening 16 in the outside of the vial 10, a second process of inserting the tip of the point burner 30 into an internal space 14 of the vial 10, a third process of applying the flame 31 to an inner surface 15 of the vial 10 while holding the tip of the point burner 30 in the internal space 14, a fourth process of moving the tip of the point burner 30 to the outside from the internal space 14, and a fifth process of moving the tip of the point burner 30 from the position where the tip of the point burner 30 faces the opening 16 to the standby position.
    Type: Application
    Filed: April 21, 2016
    Publication date: April 26, 2018
    Inventors: Yoshio INOUE, Kazuhisa MORIUCHI, Yoshihiro KAWAI, Atsushi ISHIKAWA
  • Publication number: 20180105449
    Abstract: [Object] To provide a means manufacturing a medical vial which contains a Type IA borosilicate glass as the raw material and in which the elution amount of silica into a high ionic strength solution decreases to be equal to or less than the silica elution amount in a Type IB borosilicate glass. [Solution] A method for manufacturing a medical vial is a method for manufacturing a medical vial including a fire blast process of applying a flame ejected from a point burner to a deteriorated layer generated on the inner surface of a vial, in which the vial is molded from a glass tube containing a Type IA borosilicate glass as the raw material and the molar ratio of oxides contained in the borosilicate glass satisfies ?=0.23±0.02 in ?=[(Na2O+K2O)—Al2O3]/B2O3 and satisfies ?=7.5±0.5 in ?=B2O3/Al2O3.
    Type: Application
    Filed: April 6, 2016
    Publication date: April 19, 2018
    Inventors: Masamichi WADA, Atsushi ISHIKAWA
  • Publication number: 20180083502
    Abstract: A rotor includes an iron core that assumes a cylindrical or columnar shape, and a plurality of magnets embedded in the iron core and equiangularly arranged with respect to an axis of the iron core. The iron core includes a first end surface portion, a second end surface portion, and a central portion disposed between the first end surface portion and the second end surface portion. Each of the first end surface portion, the second end surface portion, and the central portion has one or more gaps formed at positions thereof remoter from the axis of the iron core than the magnets. A third cross-sectional planar dimension of the central portion is greater than a first cross-sectional planar dimension of the first end surface portion and a second cross-sectional planar dimension of the second end surface portion.
    Type: Application
    Filed: July 15, 2015
    Publication date: March 22, 2018
    Inventor: Atsushi ISHIKAWA
  • Publication number: 20180062462
    Abstract: A rotor of a permanent-magnet-embedded electric motor includes an annular rotor core having a plurality of magnet insertion holes formed in a circumferential direction, and permanent magnets inserted into the magnet insertion holes, respectively. The rotor core is formed by alternately stacking a first core block and a second core block in an axial direction of the rotor core, the first core block not having slits between each of the magnet insertion holes and a circumferential surface of the rotor core, and the second core block having the slits between each of the magnet insertion holes and the circumferential surface of the rotor core. One of the slits and one end of the permanent magnet are arrayed in a radial direction, and the other slit and the other end of the permanent magnet are arrayed in the radial direction.
    Type: Application
    Filed: June 15, 2015
    Publication date: March 1, 2018
    Inventors: Atsushi ISHIKAWA, Masahiro NIGO
  • Publication number: 20180021907
    Abstract: A cooling gas is fed from an ejection nozzle into the interior of a through-hole which is formed in a radially central portion of a main spindle, and which penetrates through said main spindle in an axial direction. The cooling gas passes through radial venting holes provided in a plurality of locations, in the circumferential direction, in an axially intermediate portion of the main spindle, is fed into axial venting holes provided in a plurality of locations, in the circumferential direction, extending from one axial-direction end of the main spindle to an intermediate portion thereof, is caused to flow through the axial venting holes, and is discharged from discharge holes.
    Type: Application
    Filed: February 15, 2016
    Publication date: January 25, 2018
    Applicant: NSK LTD.
    Inventors: Hidekazu SUZUKI, Atsushi ISHIKAWA
  • Patent number: 9876402
    Abstract: An interior permanent magnet motor includes a stator and a rotor. The rotor includes a rotor core formed by laminating a plurality of plate members. The rotor core has a plurality of magnet insertion holes formed therein, into which corresponding permanent magnets are respectively inserted. At least one slit and at least one caulked portion are formed between a rotor outer peripheral surface of the rotor and a radially-outer insertion hole contour surface of the magnet insertion hole. At least a part of the caulked portion is positioned between a pair of width extended lines of the slit.
    Type: Grant
    Filed: September 18, 2014
    Date of Patent: January 23, 2018
    Assignee: Mitsubishi Electric Corporation
    Inventors: Kazuchika Tsuchida, Masahiro Nigo, Kazuhiko Baba, Atsushi Ishikawa, Tomoaki Oikawa
  • Patent number: 9865965
    Abstract: The present invention provides a waterproof structure for a terminal of a wire with a terminal fitting provided with a waterproof block made of resin, the waterproof block covering an end portion of an insulation coated wire which is coupled to a terminal fitting. The waterproof block includes a waterproof portion covering a coupling portion coupling the end portion of the wire and the terminal fitting, the waterproof portion adhering to an outer circumferential surface of an end of an outer skin of the wire, and a cylindrical portion projecting cylindrically from the waterproof portion along the outer skin of the wire. The cylindrical portion has a smaller cross sectional area than the waterproof portion and has rigidity more similar to the outer skin than the waterproof portion in desired bending and torsional directions of the wire and is adhered to an end-adjacent outer circumferential surface of the outer skin.
    Type: Grant
    Filed: December 2, 2015
    Date of Patent: January 9, 2018
    Assignee: SUMITOMO WIRING SYSTEMS, LTD.
    Inventors: Keisuke Enomoto, Kenichi Inokoshi, Atsushi Ishikawa
  • Patent number: 9853510
    Abstract: An interior permanent magnet motor includes a stator and a rotor rotatably arranged so as to be opposed to the stator. The rotor includes a rotor core having a plurality of magnet insertion holes formed therein, into which corresponding permanent magnets are respectively inserted. The plurality of permanent magnets and the plurality of magnet insertion holes are each formed into an arc shape that is convex toward a center side of the rotor. When a shortest distance between the adjacent magnet insertion holes is defined as an inter-pole shortest distance (L), a ratio of the inter-pole shortest distance (L) to an outer diameter (D) of the rotor is 0.035?L/D?0.045.
    Type: Grant
    Filed: December 19, 2014
    Date of Patent: December 26, 2017
    Assignee: Mitsubishi Electric Corporation
    Inventors: Atsushi Ishikawa, Kazuhiko Baba, Masahiro Nigo, Kazuchika Tsuchida
  • Publication number: 20170294814
    Abstract: In a permanent magnet embedded electric motor, a rotor iron core of a rotor disposed on an inner diameter side of a stator includes: a plurality of first slits that are formed on a radial direction outer side of a magnet insertion hole, and communicate with the magnet insertion hole; a plurality of second slits formed at positions opposed to and spaced apart from the first slits; inter-slit iron core portions formed between the first slits and the second slits; outer side iron core portions formed between the second slits and an outer circumferential surface of the rotor iron core; space portions communicating with rotating direction end portions of the magnet insertion hole; and thin iron core portions that are formed between the space portions and the outer circumferential surface of the rotor iron core, and extend in a rotating direction.
    Type: Application
    Filed: October 7, 2014
    Publication date: October 12, 2017
    Inventors: Kazuhiko BABA, Masahiro NIGO, Atsushi ISHIKAWA
  • Publication number: 20170271811
    Abstract: The present invention provides a waterproof structure for a terminal of a wire with a terminal fitting provided with a waterproof block made of resin, the waterproof block covering an end portion of an insulation coated wire which is coupled to a terminal fitting. The waterproof block includes a waterproof portion covering a coupling portion coupling the end portion of the wire and the terminal fitting, the waterproof portion adhering to an outer circumferential surface of an end of an outer skin of the wire, and a cylindrical portion projecting cylindrically from the waterproof portion along the outer skin of the wire. The cylindrical portion has a smaller cross sectional area than the waterproof portion and has rigidity more similar to the outer skin than the waterproof portion in desired bending and torsional directions of the wire and is adhered to an end-adjacent outer circumferential surface of the outer skin.
    Type: Application
    Filed: December 2, 2015
    Publication date: September 21, 2017
    Applicant: SUMITOMO WIRING SYSTEMS, LTD.
    Inventors: Keisuke ENOMOTO, Kenichi INOKOSHI, Atsushi ISHIKAWA