Patents by Inventor Takahiro Tokunaga

Takahiro Tokunaga 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: 20230237118
    Abstract: In order to solve a conventional problem that it is not possible to manage partial content in a webpage as a block and execute processing on the block, a webpage processing apparatus 7 includes: a block information storage unit 711 in which one or more pieces of block information each having a block identifier for identifying a block, which is partial content in a webpage, and location identifying information for specifying a location of the block in the webpage are stored; a block processing unit 731 that executes block processing, which is processing regarding a block specified with block information, using location identifying information contained in any one of the one or more pieces of block information; and a result output unit 751 that outputs a block processing result, which is a result of the block processing. Accordingly, it is possible to manage a block, which is partial content in a webpage, and execute processing on the block.
    Type: Application
    Filed: June 2, 2021
    Publication date: July 27, 2023
    Inventors: Takahiro TOKUNAGA, Yuichi YABU, Takami YAMADA, Kazuhiro KIMURA, Ryosuke SUZUKI, Naoya MUTO, Hirofumi TANAHASHI, Minori TOKUDA
  • Patent number: 10371026
    Abstract: An improved blow-by gas return structure minimizes the occurrence of a drawback caused by freezing at a low temperature by bringing a state where freezing minimally occurs in a blow-bay gas passage such as a pipe disposed outside an engine. The blow-by gas return structure is configured such that a blow-by gas is introduced into an intake manifold through an inner passage formed in a head cover. The blow-by gas return structure includes an outer pipe which connects a blow-by gas outlet of the head cover and a blow-by gas inlet of a main pipe of the intake manifold in a communicable manner, and a temperature elevating mechanism configured to elevate a temperature of the blow-by gas inlet. The temperature elevating mechanism is configured such that a cooling water transfer passage is formed in a portion of the blow-by gas inlet of the main pipe.
    Type: Grant
    Filed: June 9, 2017
    Date of Patent: August 6, 2019
    Assignee: KUBOTA Corporation
    Inventors: Takahiro Tokunaga, Yusuke Tanimoto, Kazuya Hamada, Shinji Kishi, Yuzo Umeda
  • Publication number: 20170370256
    Abstract: An improved blow-by gas return structure minimizes the occurrence of a drawback caused by freezing at a low temperature by bringing a state where freezing minimally occurs in a blow-bay gas passage such as a pipe disposed outside an engine. The blow-by gas return structure is configured such that a blow-by gas is introduced into an intake manifold through an inner passage formed in a head cover. The blow-by gas return structure includes an outer pipe which connects a blow-by gas outlet of the head cover and a blow-by gas inlet of a main pipe of the intake manifold in a communicable manner, and a temperature elevating mechanism configured to elevate a temperature of the blow-by gas inlet. The temperature elevating mechanism is configured such that a cooling water transfer passage is formed in a portion of the blow-by gas inlet of the main pipe.
    Type: Application
    Filed: June 9, 2017
    Publication date: December 28, 2017
    Inventors: Takahiro TOKUNAGA, Yusuke TANIMOTO, Kazuya HAMADA, Shinji KISHI, Yuzo UMEDA
  • Patent number: 8991564
    Abstract: A disk brake includes a caliper body having a cylinder portion (25) with a cylindrical shape. The cylinder portion (25) has a bore (30) with a bottom (34) formed by integrally joining together an opening peripheral edge (98) at the bottom side of the cylinder portion (25) and a bottom cover member (92) to be fitted to the opening peripheral edge (98) through friction stir welding. The bottom cover member (92) has a disk shape and is friction-stir-welded along the outer periphery thereof. The terminating point of the friction stir welding is within the boundaries of the bottom cover member (92).
    Type: Grant
    Filed: September 22, 2011
    Date of Patent: March 31, 2015
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Shinji Suzuki, Takahiro Tokunaga, Yuichi Kobayashi, Yasuhisa Omata, Jun Watanabe, Seunghwan Park, Akihiro Sato, Satoshi Hirano, Kazutaka Okamoto
  • Patent number: 8991563
    Abstract: A disk brake and a method of making the disk brake capable of improving the efficiency of manufacturing a caliper. A bottom portion (41) of a bore (40) is formed by integrally welding an opening surrounding portion at the bottom portion side of a cylinder portion (35) and a bottom cover member (92) fitted to the opening surrounding portion by friction stir welding. The bottom cover member is formed into a disk shape, and provided with a protrusion (68) at one surface side facing the interior of the bore. An inflow hole (58), for a supply of a fluid pressure into the bore, is formed within the range of the protrusion to establish communication between an interior surface (71) of the protrusion and an outer surface (63) of the bore.
    Type: Grant
    Filed: June 4, 2010
    Date of Patent: March 31, 2015
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Shinji Suzuki, Takahiro Tokunaga
  • Patent number: 8808073
    Abstract: An air passage open/close device includes a casing having an air passage, and a sliding door having a board member slidably located in the casing so as to open or close the air passage. The casing has a guide groove for guiding a movement of the board member. The guide groove has an upstream wall extending in a moving direction of the board member at an upstream side of the board member in an air flow direction, and a downstream wall opposing to the upstream wall at a downstream side of the board member in the air flow direction. The board member is configured to be elastically deformed when the board member is arranged in the casing.
    Type: Grant
    Filed: June 16, 2009
    Date of Patent: August 19, 2014
    Assignee: Denso Corporation
    Inventors: Takahiro Tokunaga, Yukio Uemura, Yoshikazu Sakaki
  • Patent number: 8240164
    Abstract: An air conditioning system includes an air-conditioner casing, an air blower, a cooling heat exchanger, a heating heat exchanger, and a bypass passage. An electric motor of the blower has a rotating shaft that extends along a rotating shaft axis. An impeller of the blower suctions air from one side of the impeller along the rotating shaft axis to blow air in a radial direction of the impeller. The bypass passage causes cold air to bypass the heating heat exchanger. The air blower is located downstream of the cooling heat exchanger and the heating heat exchanger in a flow direction of air. The cooling heat exchanger and the heating heat exchanger are arranged in parallel with each other. The air blower is positioned on an imaginary extension of the heating heat exchanger. The rotating shaft is disposed in parallel with the heating heat exchanger.
    Type: Grant
    Filed: July 22, 2008
    Date of Patent: August 14, 2012
    Assignee: Denso Corporation
    Inventors: Takahiro Tokunaga, Hitomi Asano
  • Publication number: 20120103734
    Abstract: A disk brake includes a caliper body having a cylinder portion 25 with a cylindrical shape. The cylinder portion 25 has a bore 30 with a bottom 34 formed by integrally joining together an opening peripheral edge 98 at the bottom side of the cylinder portion 25 and a bottom cover member 92 to be fitted to the opening peripheral edge 98 through friction stir welding. The bottom cover member 92 has a disk shape and is friction-stir-welded along the outer periphery thereof. The terminating point of the friction stir welding is within the boundaries of the bottom cover member 92.
    Type: Application
    Filed: September 22, 2011
    Publication date: May 3, 2012
    Inventors: Shinji SUZUKI, Takahiro Tokunaga, Yuichi Kobayashi, Yasuhisa Omata, Jun Watanabe, Seunghwan Park, Akihiro Sato, Satoshi Hirano, Kazutaka Okamoto
  • Patent number: 7963316
    Abstract: An air conditioning apparatus has a case, a heat exchanger rotatable about a rotation axis in the case, and a pipe unit in communication with the heat exchanger. The pipe unit has a first section fixed to the case and a second section coaxially coupled to the first section. The second section is coupled to the heat exchanger and rotatable with the heat exchanger. The first section has a first annular portion, a second annular portion, a cylindrical portion, and a support member. The second section has a flange portion disposed between the first annular portion and the support member. An O-ring is disposed in a groove provided by the first annular portion and the cylindrical portion, and is in contact with a surface of the first annular portion and the flange portion in a direction parallel to the rotation axis.
    Type: Grant
    Filed: January 10, 2007
    Date of Patent: June 21, 2011
    Assignees: Denso Corporation, Tokai Riki Mfg. Co., Ltd
    Inventors: Takahiro Tokunaga, Koichi Ito, Yoshio Miyata, Nobuyuki Hashimura, Akihisa Kurokawa
  • Publication number: 20100307874
    Abstract: An object of the present invention is to provide a disk brake and a method of making the disk brake capable of improving the efficiency of manufacturing a caliper. A bottom portion 41 of a bore 40 is formed by integrally welding an opening surrounding portion at the bottom portion 41 side of a cylinder portion 35 and a bottom cover member 92 fitted to the opening surrounding portion by friction stir welding. The bottom cover member 92 is formed into a disk shape, and provided with a protrusion 68 at one surface side facing the interior of the bore 40, and an inflow hole 58 for a supply of a fluid pressure into the bore 40 formed within the range of the protrusion 68 to establish communication between one surface 71 and the other surface 63.
    Type: Application
    Filed: June 4, 2010
    Publication date: December 9, 2010
    Inventors: Shinji SUZUKI, Takahiro TOKUNAGA
  • Patent number: 7779900
    Abstract: Both an air mixing door (9) for the cold air for adjusting a passage area of the cold air passage (6); and an air mixing door (10) for the hot air for adjusting a passage area of the hot air passage (7) are composed of a sliding door for adjusting the passage area when the air mixing door (9) for the cold air and the air mixing door (10) for the hot air are slid in a direction perpendicular to the flow of air in both the passages (6, 7), and while one of the air mixing door (9) for the cold air and the air mixing door (10) for the hot air is maintaining one of the passages (6, 7) in a fully opened state, an operating position of the other door is adjusted so that a passage area of the other passage is adjusted and a temperature of the air blowing out into a vehicle compartment is adjusted.
    Type: Grant
    Filed: June 8, 2009
    Date of Patent: August 24, 2010
    Assignee: Denso Corporation
    Inventors: Koji Ito, Takahiro Tokunaga, Yoshihiko Okumura
  • Publication number: 20100078269
    Abstract: There is provided a disk brake, comprising: a pad supporting member where at least a pair of lining pads is supported, and at least two first installation holes are provided at a mounting portion that is installed to a vehicle; at least two second installation holes provided at a non-rotational portion of the vehicle; and a fixing bolt installed into the first and second installation holes so as to fasten the mounting portion and the non-rotational portion, wherein a reinforcement member is provided with at least two internal thread portions into which the fixing bolt is screwed, the reinforcement member being formed with materials different from the ones of the mounting portion and the non-rotational portion, and the mounting portion and the non-rotational portion are fastened by means of the reinforcement member and the fixing bolt.
    Type: Application
    Filed: September 9, 2009
    Publication date: April 1, 2010
    Applicant: Hitachi Automotive Systems, Ltd.
    Inventors: Takahiro Tokunaga, Shinji Suzuki, Yoichi Kumemura
  • Publication number: 20090313899
    Abstract: An air passage open/close device includes a casing having an air passage, and a sliding door having a board member slidably located in the casing so as to open or close the air passage. The casing has a guide groove for guiding a movement of the board member. The guide groove has an upstream wall extending in a moving direction of the board member at an upstream side of the board member in an air flow direction, and a downstream wall opposing to the upstream wall at a downstream side of the board member in the air flow direction. The board member is configured to be elastically deformed when the board member is arranged in the casing.
    Type: Application
    Filed: June 16, 2009
    Publication date: December 24, 2009
    Applicant: DENSO CORPORATION
    Inventors: Takahiro Tokunaga, Yukio Uemura, Yoshikazu Sakaki
  • Publication number: 20090250194
    Abstract: Both an air mixing door (9) for the cold air for adjusting a passage area of the cold air passage (6); and an air mixing door (10) for the hot air for adjusting a passage area of the hot air passage (7) are composed of a sliding door for adjusting the passage area when the air mixing door (9) for the cold air and the air mixing door (10) for the hot air are slid in a direction perpendicular to the flow of air in both the passages (6, 7), and while one of the air mixing door (9) for the cold air and the air mixing door (10) for the hot air is maintaining one of the passages (6, 7) in a fully opened state, an operating position of the other door is adjusted so that a passage area of the other passage is adjusted and a temperature of the air blowing out into a vehicle compartment is adjusted.
    Type: Application
    Filed: June 8, 2009
    Publication date: October 8, 2009
    Applicant: DENSO CORPORATION
    Inventors: Koji Ito, Takahiro Tokunaga, Yoshihiko Okumura
  • Patent number: 7523726
    Abstract: An air-cooled V-shaped engine comprises a throttle body (10) and a flow-dividing plate (9) arranged ahead of a central cooling-air passage (8). The flow-dividing plate (9) is provided in a fan case (5) at a position forwardly of the throttle body (10) and has a bottom-plate portion (14) disposed at a position lower than the throttle body (10). The flow-dividing plate (9) divides the cooling air generated by an air-blowing fan (7) toward left and right sides of the central cooling-air passage (8). In this air-cooled V-shaped engine, the fan case (5) has a ceiling wall a central portion (11) of which is positioned just above the bottom-plate portion (14) of the flow-dividing plate (9). The central portion (11) of the ceiling wall of the flow-dividing plate (9) is provided at a position higher than the throttle body (10) as well as the central side portions (12), (12) of the ceiling wall, led out of the central portion (11) in a left and right directions.
    Type: Grant
    Filed: September 20, 2007
    Date of Patent: April 28, 2009
    Assignee: Kubota Corporation
    Inventors: Eishin Nakashima, Kiyonobu Iida, Hiroyuki Tsuda, Akiyoshi Morikawa, Noriaki Kobayashi, Masaharu Ohno, Hiroyuki Kawasoe, Yuki Ozaki, Takahiro Tokunaga, Takayuki Nakamae, Mineo Takasaki
  • Publication number: 20090025905
    Abstract: An air conditioning system includes an air-conditioner casing, an air blower, a cooling heat exchanger, a heating heat exchanger, and a bypass passage. An electric motor of the blower has a rotating shaft that extends along a rotating shaft axis. An impeller of the blower suctions air from one side of the impeller along the rotating shaft axis to blow air in a radial direction of the impeller. The bypass passage causes cold air to bypass the heating heat exchanger. The air blower is located. downstream of the cooling heat exchanger and the heating heat exchanger in a flow direction of air. The cooling heat exchanger and the heating heat exchanger are arranged in parallel with each other. The air blower is positioned on an imaginary extension of the heating heat exchanger. The rotating shaft is disposed in parallel with the heating heat exchanger.
    Type: Application
    Filed: July 22, 2008
    Publication date: January 29, 2009
    Applicant: DENSO CORPORATION
    Inventors: Takahiro Tokunaga, Hitomi Asano
  • Publication number: 20090023374
    Abstract: An air passage opening and closing device includes a case forming an opening portion, a sliding door, and a gear mechanism. The case has a case-side seal surface at two edges of the opening portion in a width direction of a door body of the sliding door, on which a first plate surface of the door body abuts. The gear mechanism includes a driven side gear molded integrally with the door body using resin. The driven side gear protrudes from a second plate surface of the door body on a side opposite to the first plate surface, and extends in parallel with a movement direction of the sliding door, at two edge portions of the second plate surface in the width direction. In addition, the driven side gear has a hollow space opened toward a direction parallel to the width direction.
    Type: Application
    Filed: July 17, 2008
    Publication date: January 22, 2009
    Applicant: DENSO CORPORATION
    Inventors: Yoshihiro Suzuki, Takahiro Tokunaga, Yoshikazu Sakaki
  • Patent number: 7464749
    Abstract: The air-conditioning unit includes an air-conditioning case, a heater, a bypass path bypassing the heater, an air-mixing chamber, an air-mixing door, and an air opening. The air-conditioning unit also includes an auxiliary door arranged in series with the air-mixing door in the bypass path. The auxiliary door is operated between at a first position and at a second position. The auxiliary door in the first position closes the bypass path more than in the second position. The auxiliary door is operated at the first position at least when the air-mixing door opens the bypass path slightly.
    Type: Grant
    Filed: November 2, 2004
    Date of Patent: December 16, 2008
    Assignee: Denso Corporation
    Inventors: Yoshihiko Okumura, Takahiro Tokunaga
  • Patent number: 7434608
    Abstract: An air-blowing unit includes a blower unit including an irreversible fan, a first blower-side duct connected to an inlet port of the blower unit, a second blower-side duct connected to an air discharge port of the blower unit, a first air opening-side duct including a first air opening, a second air opening-side duct including a second air opening, and an air passage switching device disposed between the blower-side ducts and the air opening-side ducts. The air passage switching device switches air passage connection between the blower-side ducts and the air opening-side ducts.
    Type: Grant
    Filed: October 5, 2004
    Date of Patent: October 14, 2008
    Assignee: Denso Corporation
    Inventors: Tomohide Shindo, Takahiro Tokunaga
  • Publication number: 20080127914
    Abstract: An air-cooled V-shaped engine comprises a throttle body (10) and a flow-dividing plate (9) arranged ahead of a central cooling-air passage (8). The flow-dividing plate (9) is provided in a fan case (5) at a position forwardly of the throttle body (10) and has a bottom-plate portion (14) disposed at a position lower than the throttle body (10). The flow-dividing plate (9) divides the cooling air generated by an air-blowing fan (7) toward left and right sides of the central cooling-air passage (8). In this air-cooled V-shaped engine, the fan case (5) has a ceiling wall a central portion (11) of which is positioned just above the bottom-plate portion (14) of the flow-dividing plate (9). The central portion (11) of the ceiling wall of the flow-dividing plate (9) is provided at a position higher than the throttle body (10) as well as the central side portions (12), (12) of the ceiling wall, led out of the central portion (11) in a left and right directions.
    Type: Application
    Filed: September 20, 2007
    Publication date: June 5, 2008
    Applicant: KUBOTA Corporation
    Inventors: Eishin Nakashima, Kiyonobu IIda, Hiroyuki Tsuda, Akiyoshi Morikawa, Noriaki Kobayashi, Masaharu Ohno, Hiroyuki Kawasoe, Yuki Ozaki, Takahiro Tokunaga, Takayuki Nakamae, Mineo Takasaki