Patents by Inventor Naofumi Kanei

Naofumi Kanei 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: 20210156371
    Abstract: A piston ring includes a first ring portion which is fitted onto an outer circumferential portion of a piston and which is capable of sliding relative to an inner wall surface of a cylinder, and a second ring portion which is fitted onto the outer circumferential portion of the piston, arranged side-by-side with the first ring portion in the axial direction, and which is capable of sliding relative to the inner wall surface of the cylinder. The second ring portion is fitted onto the outer circumferential portion of the piston in such a way as to be positioned on a side opposite to a compression chamber inside the cylinder, relative to the first ring portion, and has a greater hardness than the first ring portion has.
    Type: Application
    Filed: April 8, 2019
    Publication date: May 27, 2021
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)
    Inventors: Naofumi KANEI, Tomohiro OTSUKA, Hirotaka ITO, Hiroaki NII
  • Publication number: 20210154886
    Abstract: In kneading rotors, a twist angle of long wing constituting kneading wings is between 38 degrees and 53 degrees inclusive. The long wing includes, between the long wings and an inner surface of a casing, wing tops configured to form, along a wing longitudinal direction, a first tip clearance, and a second tip clearance narrower than the first tip clearance in width. A central angle of the long wing forming the second tip clearance is between 5 degrees and 10 degrees inclusive.
    Type: Application
    Filed: March 18, 2019
    Publication date: May 27, 2021
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)
    Inventors: Akira KONISHI, Yasuaki YAMANE, Naofumi KANEI
  • Publication number: 20200408302
    Abstract: The present invention discloses a compressor configured to compress gas. The compressor includes: a cylinder part; a piston disposed in the cylinder part to form in the cylinder part a compression chamber in which the gas is compressed, the piston being configured to compress the gas in the compression chamber; a first sealing part located adjacent to the compression chamber and attached to an outer circumference of the piston, and formed mainly containing at least one type of component that is selected from a group of polyetheretherketone, polyimide, and polybenzimidazole; and a second sealing part located more separated from the compression chamber than the first sealing part is from the compression chamber and attached to the outer circumference of the piston, the second sealing part having a hardness equal to or smaller than that of the first sealing part.
    Type: Application
    Filed: April 30, 2020
    Publication date: December 31, 2020
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)
    Inventors: Naofumi KANEI, Tomohiro OTSUKA
  • Publication number: 20200340582
    Abstract: A piston ring is used for a reciprocating compressor. In the piston ring, polytetrafluoroethylene and polyetheretherketone or polyimide account for 50% or more by mass in total. The piston ring does not contain polyphenylene sulfide. The piston ring has a tensile strength within a range of more than 15 MPa and less than 100 MPa.
    Type: Application
    Filed: April 1, 2020
    Publication date: October 29, 2020
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)
    Inventors: Tomohiro OOTSUKA, Naofumi KANEI
  • Publication number: 20190376862
    Abstract: A compression device (1) includes compression portions, a suction line, connection lines, a discharge line, and display portions (d) configured to display pressure values, pressure gauges (PG1 to PG6) provided for at least one of the suction line, the connection lines, and the discharge line and a housing (40). The housing (40) includes a peripheral wall (42) and a door (44). The pressure gauges (PG1 to PG6) are situated at positions to face the door (44).
    Type: Application
    Filed: May 31, 2019
    Publication date: December 12, 2019
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)
    Inventors: Koichiro HASHIMOTO, Naofumi KANEI, Takuya WASHIO, Daisuke WADA, Ryosuke MORI
  • Publication number: 20190368426
    Abstract: A gas supply system includes a first tank, a first path into which a first gas generated by vaporization of a first low-temperature liquefied gas flows, a gas boosting mechanism being disposed in the first path, a second path that is a path configured to extract the first low-temperature liquefied gas from the first tank, a pump and a vaporization mechanism being disposed in the second path and a reliquefaction path that is a path configured to liquefy at least part of the first gas extracted from an upstream side of the gas boosting mechanism in the first path and to cause the liquefied first gas to flow into an upstream side of the pump in the second path, a cooling heat exchanger configured to cool the first gas by a second low-temperature liquefied gas or a second gas being disposed in the reliquefaction path.
    Type: Application
    Filed: May 20, 2019
    Publication date: December 5, 2019
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (Kobe Steel, Ltd.)
    Inventors: Naofumi KANEI, Kenji NAGURA
  • Patent number: 10495118
    Abstract: Provided is a hydraulic drive device, wherein the hydraulic drive device is provided with: a cylinder (101); a rod (103); a piston (102); a hydraulic pump (107); a tank (113); a valve (106) that can be switched between a positive state of connecting the hydraulic pump (107) and a head chamber (101h) and connecting a rod chamber (101r) and the tank (113), and a negative state of connecting the hydraulic pump (107) and the rod chamber (101r) and connecting the head chamber (101h) and the tank (113); and a confluence channel (114) at which, when the valve (106) is in the positive state, at least a portion of hydraulic oil going from the rod chamber (101r) to the tank (113) is merged into hydraulic oil going from the hydraulic pump (107) to the head chamber (101h).
    Type: Grant
    Filed: May 30, 2016
    Date of Patent: December 3, 2019
    Assignee: Kobe Steel, Ltd.
    Inventors: Toru Eguchi, Yoshiharu Nishida, Naofumi Kanei, Hideto Fujiwara
  • Publication number: 20190143563
    Abstract: Provided is a dust stop device for a sealed kneader, the device being capable of excellent supply of lubricating oil. The sealed kneader includes a pair of rotors and a supporting member. The dust stop device includes a rotating ring attached to each rotor and a stationary ring attached to the supporting member. Both the rings have respective contact surfaces which make surface contact with each other. The stationary ring has a lubricating-oil supply portion with a through-hole. A part of the through-hole, the part including a part opened in the contact surface, is a long hole extending along a circumferential direction of rotation of the rotating ring.
    Type: Application
    Filed: April 27, 2017
    Publication date: May 16, 2019
    Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
    Inventors: Naofumi KANEI, Koichi MIYAKE, Hikaru HAMADA
  • Publication number: 20180202467
    Abstract: Provided is a hydraulic drive device, wherein the hydraulic drive device is provided with: a cylinder (101); a rod (103); a piston (102); a hydraulic pump (107); a tank (113); a valve (106) that can be switched between a positive state of connecting the hydraulic pump (107) and a head chamber (101h) and connecting a rod chamber (101r) and the tank (113), and a negative state of connecting the hydraulic pump (107) and the rod chamber (101r) and connecting the head chamber (101h) and the tank (113); and a confluence channel (114) at which, when the valve (106) is in the positive state, at least a portion of hydraulic oil going from the rod chamber (101r) to the tank (113) is merged into hydraulic oil going from the hydraulic pump (107) to the head chamber (101h).
    Type: Application
    Filed: May 30, 2016
    Publication date: July 19, 2018
    Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
    Inventors: Toru EGUCHI, Yoshiharu NISHIDA, Naofumi KANEI, Hideto FUJIWARA
  • Patent number: 9267860
    Abstract: The present invention provides a tire balance measuring device capable of minimizing the influence exerted on a measured value due to an inclination of a lock shaft even when the lock shaft (fitted shaft) is inclined in a random direction at an angle created by a gap corresponding to a fitting allowance every time a tire is supplied with gas. The tire balance measuring device of this invention comprises a sensor for measuring the inclination of the lock shaft, and a computing unit for computing an amount of change in a unbalance of the tire from an output value received from the sensor after the tire is supplied with gas, and correcting a result of measuring a balance of the tire using the computed amount of change in the unbalance.
    Type: Grant
    Filed: June 26, 2013
    Date of Patent: February 23, 2016
    Assignee: Kobe Steel, Ltd.
    Inventors: Naofumi Kanei, Maiko Nakayama, Michiya Kurohashi
  • Patent number: 8910512
    Abstract: Disclosed is a multi-component force measurement spindle unit that accurately measures forces and moments applied to a tire in a tire testing machine. The multi-component force measurement spindle unit of a tire testing machine includes: a spindle shaft on which a tire can be mounted; an inner sleeve that rotatably supports the spindle shaft via a bearing part; an outer sleeve arranged on an outside of the inner sleeve along an axial center direction of the spindle shaft; a multi-component force measurement sensor that connects an end of the inner sleeve and an end of the outer sleeve to each other and is capable of measuring a load acting on the outer sleeve from the inner sleeve; and a cooling part that cools the inner sleeve.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: December 16, 2014
    Assignee: Kobe Steel, Ltd.
    Inventors: Takashi Sumitani, Yu Sumimoto, Naofumi Kanei
  • Publication number: 20140007679
    Abstract: The present invention provides a tire balance measuring device capable of minimizing the influence exerted on a measured value due to an inclination of a lock shaft even when the lock shaft (fitted shaft) is inclined in a random direction at an angle created by a gap corresponding to a fitting allowance every time a tire is supplied with gas. The tire balance measuring device of this invention comprises a sensor for measuring the inclination of the lock shaft, and a computing unit for computing an amount of change in a unbalance of the tire from an output value received from the sensor after the tire is supplied with gas, and correcting a result of measuring a balance of the tire using the computed amount of change in the unbalance.
    Type: Application
    Filed: June 26, 2013
    Publication date: January 9, 2014
    Inventors: Naofumi KANEI, Maiko NAKAYAMA, Michiya KUROHASHI
  • Patent number: 7969459
    Abstract: A thermal printhead (A) includes an insulating substrate (1), a heating resistor (2) provided on the substrate (1) and a protective film (4) covering the heating resistor (2). The protective film (4) is made up of a first layer (41), a second layer (42) and a third layer (43). The first layer (41) is held in contact with the heating resistor (2). The second layer (42) covers the first layer (41). The second layer (42) is harder than the first layer (41) and has a higher thermal conductivity than that of the first layer (41). The third layer (43) is the outermost layer and covers the second layer (42). The third layer (43) is harder than the second layer (42) and thinner than the second layer (42).
    Type: Grant
    Filed: February 21, 2008
    Date of Patent: June 28, 2011
    Assignee: Rohm Co., Ltd.
    Inventors: Naofumi Kanei, Takumi Yamade
  • Patent number: 7911489
    Abstract: A thermal print head A includes a substrate 1, a heat generating resistor 3 supported by the substrate 1, and a protective layer 4 which covers the heat generating resistor 3. The protective layer 4 includes a first inner layer 41 which is in contact with the heat generating resistor 3, a second inner layer 42 formed on the first inner layer 41, and an outer layer 43. Part of the second inner layer 42 is formed as a rough surface 42a which has a surface roughness of Ra 0.1 through 0.3. The rough surface 42a is disposed at a position corresponding to the heat generating resistor 3. The outer layer 43 is made of a metal nitride or a chemical compound containing a metal nitride, and has a thickness of 0.1 through 0.5 ?m.
    Type: Grant
    Filed: March 11, 2008
    Date of Patent: March 22, 2011
    Assignee: Rohm Co., Ltd.
    Inventors: Takumi Yamade, Naofumi Kanei
  • Patent number: 7903132
    Abstract: A thermal printhead (A1) includes an insulating substrate and a heating resistor element (3) formed on the substrate and elongated in the primary scanning direction. A plurality of electrodes are connected to the heating resistor element (3). The electrodes and the heating resistor element (3) are covered by a protective film (4). The protective film (4) includes a first layer (41), a second layer (42) and a third layer (43). The second layer (42) is porous and includes a plurality of pores (42a). The third layer (43) partially enters each of the pores (42a) so that the upper surface pf the protective film (4) is an irregular surface including a plurality or recesses (4a).
    Type: Grant
    Filed: June 19, 2007
    Date of Patent: March 8, 2011
    Assignee: Rohm Co., Ltd.
    Inventors: Teruhisa Sako, Naofumi Kanei
  • Publication number: 20100085412
    Abstract: A thermal printhead (A) includes an insulating substrate (1), a heating resistor (2) provided on the substrate (1) and a protective film (4) covering the heating resistor (2). The protective film (4) is made up of a first layer (41), a second layer (42) and a third layer (43). The first layer (41) is held in contact with the heating resistor (2). The second layer (42) covers the first layer (41). The second layer (42) is harder than the first layer (41) and has a higher thermal conductivity than that of the first layer (41). The third layer (43) is the outermost layer and covers the second layer (42). The third layer (43) is harder than the second layer (42) and thinner than the second layer (42).
    Type: Application
    Filed: February 21, 2008
    Publication date: April 8, 2010
    Applicant: ROHM CO., LTD.
    Inventors: Naofumi Kanei, Takumi Yamade
  • Publication number: 20100066798
    Abstract: A thermal print head A includes a substrate 1, a heat generating resistor 3 supported by the substrate 1, and a protective layer 4 which covers the heat generating resistor 3. The protective layer 4 includes a first inner layer 41 which is in contact with the heat generating resistor 3, a second inner layer 42 formed on the first inner layer 41, and an outer layer 43. Part of the second inner layer 42 is formed as a rough surface 42a which has a surface roughness of Ra 0.1 through 0.3. The rough surface 42a is disposed at a position corresponding to the heat generating resistor 3. The outer layer 43 is made of a metal nitride or a chemical compound containing a metal nitride, and has a thickness of 0.1 through 0.5 ?m.
    Type: Application
    Filed: March 11, 2008
    Publication date: March 18, 2010
    Inventors: Takumi Yamade, Naofumi Kanei
  • Publication number: 20090174757
    Abstract: A thermal printhead (A1) includes an insulating substrate and a heating resistor element (3) formed on the substrate and elongated in the primary scanning direction. A plurality of electrodes are connected to the heating resistor element (3). The electrodes and the heating resistor element (3) are covered by a protective film (4). The protective film (4) includes a first layer (41), a second layer (42) and a third layer (43). The second layer (42) is porous and includes a plurality of pores (42a). The third layer (43) partially enters each of the pores (42a) so that the upper surface pf the protective film (4) is an irregular surface including a plurality or recesses (4a).
    Type: Application
    Filed: June 19, 2007
    Publication date: July 9, 2009
    Applicant: ROHM CO., LTD.
    Inventors: Teruhisa Sako, Naofumi Kanei