Patents by Inventor Takahiro Naganuma

Takahiro Naganuma 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: 20180224852
    Abstract: An auto-drive apparatus includes a condition determiner for determining whether an auto-drive start condition of a vehicle is satisfied based on a detection of a boarding action by a user. When no destination has been set at a time when the auto-drive start condition is satisfied, a temporary destination setter sets a temporary destination, which is a position on a nearby road that is reachable in a minimum travel time or via a shortest travel distance from a current vehicle position. An auto-drive processor plans a route to the temporary destination and starts the auto-drive of the vehicle toward the temporary destination.
    Type: Application
    Filed: February 2, 2018
    Publication date: August 9, 2018
    Inventors: Akihito Tanahashi, Toshiyuki Ito, Takahiro Naganuma
  • Publication number: 20180112662
    Abstract: In the present invention, polishing lines 71f are connected to an outer circumferential high-pressure region, but are not connected to each area that is a low-pressure region. In this configuration, the polishing lines 71f are connected to the outer circumferential high-pressure region where there is high discharge pressure, so high-pressure brake fluid is introduced within the polishing lines 71f. Therefore, a pushback effect is obtained, wherein gear pumps 19 and 39 are pushed back on the basis of the high-pressure brake fluid pressure. Furthermore, the polishing lines 71f are connected to the outer circumferential high-pressure region but are not connected to each area that is a low-pressure region, so high-pressure can be maintained within the polishing lines 71f, and a reduction in the pushback effect can be prevented. Accordingly, a decrease in the loss torque reduction effect can be prevented, and the loss torque can be further reduced.
    Type: Application
    Filed: April 27, 2016
    Publication date: April 26, 2018
    Applicant: ADVICS CO., LTD.
    Inventors: Takashi HASHIBA, Naoki HAKAMADA, Takahiro NAGANUMA, Tomoaki KAWABATA
  • Patent number: 9835155
    Abstract: A gear pump apparatus includes a gear pump and a sealing mechanism which includes an annular rubber member, an outer member, and an inner member. One of the outer member and a casing of the gear pump apparatus has a contact member located outside a portion of the outer member which contacts the gear pump in a radial direction of the gear pump. The contact member is placed to create a physical contact between the outer member and the casing to absorb a part of force by which the outer member is pressed against the gear pump. This results in a decrease in pressure acting on an area of contact between the outer member and the gear pump, which leads to a drop in resistance to sliding between the gear pump and the outer member, thus decreasing a loss of torque required for the pumping operation of the gear pump.
    Type: Grant
    Filed: July 10, 2015
    Date of Patent: December 5, 2017
    Assignee: ADVICS Co., Ltd.
    Inventors: Takashi Hashiba, Naoki Hakamada, Takahiro Naganuma, Tomoaki Kawabata
  • Patent number: 9556869
    Abstract: A gear pump apparatus is equipped with a pump and a sealing mechanism which is made up of an outer member, an inner member, and a rubber member fit between the outer and inner members. The inner member has a pressure-exerted surface to which pressure, as produced by contact of the rubber member with the inner member arising from application of discharge pressure of the pump, is applied. The pressure-exerted surface has a flange which creates thrust to move the inner member away from the gear pump, thereby bringing the inner member against an inner wall of a pump casing to develop a hermetical seal between a high-pressure region and a low-pressure region within the pump casing. This eliminates the leakage of pressure and ensures torque required for a pumping operation of the pump.
    Type: Grant
    Filed: November 25, 2014
    Date of Patent: January 31, 2017
    Assignees: NIPPON SOKEN, INC., DENSO CORPORATION, ADVICS CO., LTD.
    Inventors: Takashi Hashiba, Naoki Hakamada, Kazunori Uchiyama, Takahiro Naganuma, Tomoaki Kawabata, Kunihito Ando
  • Patent number: 9297378
    Abstract: A rotary machine includes a rotary shaft having two driving reactive force receiving parts that are displaced in an axial direction and are applied with diametrical reactive forces having different rotation phases from driving targets as normal loads; and bearings that rotatably support the rotary shaft wherein the rotary shaft is rotated at a state where the rotary shaft is supported by the bearings to drive the driving targets via the driving reactive force receiving parts, wherein the bearings are respectively provided at both axial sides of one of the two driving reactive force receiving parts, which receives a higher normal load, and wherein a leading end side of the rotary shaft more than the other of the two driving reactive force receiving part, which receive a lower normal load lower than the higher normal load, is configured as a free end.
    Type: Grant
    Filed: October 24, 2012
    Date of Patent: March 29, 2016
    Assignees: ADVICS CO., LTD., DENSO CORPORATION
    Inventors: Kunihito Ando, Daishi Kato, Yuki Nakamura, Takahiro Naganuma, Tomoaki Kawabata
  • Patent number: 9297388
    Abstract: A shaft seal device includes: a rotary shaft; a seal member that is arranged on an outer periphery of the rotary shaft; a liquid chamber; and a seal member accommodation chamber that accommodates the seal member therein, wherein the liquid chamber and the seal member accommodation chamber is separated by a partition wall, wherein the rotary shaft passes through a shaft hole formed in the partition wall and an outer periphery of the rotary shaft is sealed by the seal member, wherein the partition wall is formed with a through-hole penetrating the partition wall, a hollow member is mounted in the through-hole, a protrusion part of the hollow member protrudes toward the seal member accommodation chamber to engage with the seal member, and wherein the liquid chamber and the seal member accommodation chamber communicate with each other through a hole of the hollow member.
    Type: Grant
    Filed: September 27, 2012
    Date of Patent: March 29, 2016
    Assignees: ADVICS CO., LTD., DENSO CORPORATION
    Inventors: Daishi Kato, Kunihito Ando, Yuki Nakamura, Takahiro Naganuma, Tomoaki Kawabata
  • Publication number: 20160010645
    Abstract: A gear pump apparatus includes a gear pump and a sealing mechanism which includes an annular rubber member, an outer member, and an inner member. One of the outer member and a casing of the gear pump apparatus has a contact member located outside a portion of the outer member which contacts the gear pump in a radial direction of the gear pump. The contact member is placed to create a physical contact between the outer member and the casing to absorb a part of force by which the outer member is pressed against the gear pump. This results in a decrease in pressure acting on an area of contact between the outer member and the gear pump, which leads to a drop in resistance to sliding between the gear pump and the outer member, thus decreasing a loss of torque required for the pumping operation of the gear pump.
    Type: Application
    Filed: July 10, 2015
    Publication date: January 14, 2016
    Inventors: Takashi Hashiba, Naoki Hakamada, Takahiro Naganuma, Tomoaki Kawabata
  • Publication number: 20150152865
    Abstract: A gear pump apparatus is equipped with a pump and a sealing mechanism which is made up of an outer member, an inner member, and a rubber member fit between the outer and inner members. The inner member has a pressure-exerted surface to which pressure, as produced by contact of the rubber member with the inner member arising from application of discharge pressure of the pump, is applied. The pressure-exerted surface has a flange which creates thrust to move the inner member away from the gear pump, thereby bringing the inner member against an inner wall of a pump casing to develop a hermetical seal between a high-pressure region and a low-pressure region within the pump casing. This eliminates the leakage of pressure and ensures torque required for a pumping operation of the pump.
    Type: Application
    Filed: November 25, 2014
    Publication date: June 4, 2015
    Inventors: Takashi HASHIBA, Naoki HAKAMADA, Kazunori UCHIYAMA, Takahiro NAGANUMA, Tomoaki KAWABATA, Kunihito ANDO
  • Patent number: 9046102
    Abstract: A gear pump device of this disclosure includes: a gear pump; a casing; and a seal mechanism, wherein the seal mechanism includes: an annular rubber member; an outer member; and an inner member, which has an outer peripheral wall on which the annular rubber member is mounted, the inner member fitted into an inner side of the outer member and contacting on an inner wall face of the outer shell, wherein the outer peripheral wall of the inner member is provided with a collar portion that generates a propulsive force towards the inner wall face of the outer shell of the casing by a contact pressure of the annular rubber member based on a discharge pressure of the gear pump, and the collar portion forms a pressure receiving face to increase the propulsive force as the contact pressure of the annular rubber member increases according to an increase of the discharge pressure.
    Type: Grant
    Filed: July 24, 2013
    Date of Patent: June 2, 2015
    Assignees: ADVICS CO., LTD., DENSO CORPORATION
    Inventors: Takahiro Naganuma, Yuki Nakamura
  • Patent number: 8747089
    Abstract: An O-ring has a shape including a first portion that is arranged side by side with a suction port in an axial direction, a second portion that is arranged side by side with a suction port, and a third portion that connects these portions. The first portion and the second portion are arranged to be displaced from each other in the axial direction. The third portion is arranged to extend in a direction different from a circumferential direction between the suction port and the suction port when a pump body is viewed in a radial direction. Thus, the suction ports can be located closer to each other in the axial direction. Therefore, the axial direction length of the pump body can be reduced, and size reduction of a rotary pump device can be achieved.
    Type: Grant
    Filed: August 29, 2011
    Date of Patent: June 10, 2014
    Assignees: Advics Co., Ltd., Denso Corporation
    Inventors: Yuki Nakamura, Kunihito Ando, Nobuhiko Yoshioka, Takahiro Naganuma, Tomoaki Kawabata
  • Patent number: 8684848
    Abstract: A shaft coupling apparatus includes a cylindrically-shaped hole provided on a leading end surface of a shaft, the hole having a central axis that is different from a rotational central axis of the shaft, and a cylindrically-shaped hole is provided on a leading end surface of a shaft, the hole having a central axis that is different from a rotational central axis of the shaft. The shafts are coupled by pressure fitting a cross-sectionally circular pin in the hole and by loosely fitting the pin in the hole, the pin corresponding to an inner diameter of the hole and the hole.
    Type: Grant
    Filed: September 16, 2011
    Date of Patent: April 1, 2014
    Assignees: Advics Co., Ltd, Denso Corporation
    Inventors: Yuki Nakamura, Kunihito Ando, Nobuhiko Yoshioka, Takahiro Naganuma, Tomoaki Kawabata
  • Patent number: 8678798
    Abstract: A rotary pump device is provided in which a drive shaft is inserted into a center hole of a cylinder that forms rotor chambers, and into outer rotors and inner rotors of rotary pumps. In the rotary pump device, seal mechanisms that include hollow-shaped resin members and annular rubber members are arranged on an opposite side to the cylinder with respect to the rotary pumps. Metal rings are arranged in hollow portions of the resin members in the seal mechanisms so that the drive shaft is inserted into an inner periphery of the metal rings with a minimum clearance.
    Type: Grant
    Filed: August 29, 2011
    Date of Patent: March 25, 2014
    Assignees: Advics Co., Ltd., Denso Corporation
    Inventors: Yuki Nakamura, Kunihito Ando, Nobuhiko Yoshioka, Takahiro Naganuma, Tomoaki Kawabata
  • Patent number: 8651967
    Abstract: A torque transmission device connects two rotary shafts having shaft ends opposing each other, such that torque is transmitted through a torque transmission mechanism provided to a shaft end surface of each of the two rotary shafts. A first rotary shaft of the two rotary shafts has a double-supported structure where both end portions of the first rotary shaft are supported by bearings, respectively. A second rotary shaft of the two rotary shafts has a cantilever structure where only one end portion of the second rotary shaft opposite to the torque transmission mechanism is supported by a bearing, and the second rotary shaft is spaced from one bearing of the bearings supporting the first rotary shaft, the one bearing being provided at a side of the torque transmission mechanism.
    Type: Grant
    Filed: October 12, 2012
    Date of Patent: February 18, 2014
    Assignees: Advics Co., Ltd., Denso Corporation
    Inventors: Kunihito Ando, Daishi Kato, Yuki Nakamura, Takahiro Naganuma, Tomoaki Kawabata
  • Publication number: 20140030132
    Abstract: A gear pump device of this disclosure includes: a gear pump; a casing; and a seal mechanism, wherein the seal mechanism includes: an annular rubber member; an outer member; and an inner member, which has an outer peripheral wall on which the annular rubber member is mounted, the inner member fitted into an inner side of the outer member and contacting on a inner wall face of the outer shell, wherein the outer peripheral wall of the inner member is provided with a collar portion that generates a propulsive force towards the inner wall face of the inner member by a contact pressure of the annular rubber members based on a discharge pressure of the gear pump, and the collar portion forms a pressure receiving face to increase the propulsive force as the contact pressure of the annular rubber members increases according to an increase of the discharge pressure.
    Type: Application
    Filed: July 24, 2013
    Publication date: January 30, 2014
    Applicants: DENSO CORPORATION, ADVICS CO., LTD.
    Inventors: Takahiro NAGANUMA, Yuki Nakamura
  • Publication number: 20120070222
    Abstract: A shaft coupling apparatus is provided in which a cylindrically-shaped hole is provided on a leading end surface of a shaft, the hole having a central axis that is different from a rotational central axis of the shaft, and a cylindrically-shaped hole is provided on a leading end surface of a shaft, the hole having a central axis that is different from a rotational central axis of the shaft. The shafts are coupled by pressure fitting a cross-sectionally circular pin in the hole and by loosely fitting the pin in the hole, the pin corresponding to an inner diameter of the hole and the hole.
    Type: Application
    Filed: September 16, 2011
    Publication date: March 22, 2012
    Applicants: DENSO CORPORATION, ADVICS CO., LTD.
    Inventors: Yuki NAKAMURA, Kunihito Ando, Nobuhiko Yoshioka, Takahiro Naganuma, Tomoaki Kawabata
  • Publication number: 20120068559
    Abstract: A apparatus is provided in which, in a state before being assembled to a drive target, one end of a rotating shaft is not supported by a bearing, and in this state, the rotating shaft is pressed to the side of a bracket by coil springs and thus centering of the rotating shaft is maintained. In this way, axial run-out of the rotating shaft before a magnetic motor is assembled to the drive target is inhibited. Thus, damage and deterioration in assembly efficiency as a result of axial run-out of the rotating shaft can be inhibited, such as deterioration in assembly efficiency caused by adhesion between a magnet and coils wound on an armature core, for example.
    Type: Application
    Filed: September 16, 2011
    Publication date: March 22, 2012
    Applicants: DENSO CORPORATION, ADVICS CO., LTD.
    Inventors: Yuki NAKAMURA, Kunihito Ando, Nobuhiko Yoshioka, Takahiro Naganuma, Tomoaki Kawabata
  • Publication number: 20120051960
    Abstract: A rotary pump device is provided in which a drive shaft is inserted into a center hole of a cylinder that forms rotor chambers, and into outer rotors and inner rotors of rotary pumps. In the rotary pump device, seal mechanisms that include hollow-shaped resin members and annular rubber members are arranged on an opposite side to the cylinder with respect to the rotary pumps. Metal rings are arranged in hollow portions of the resin members in the seal mechanisms so that the drive shaft is inserted into an inner periphery of the metal rings with a minimum clearance.
    Type: Application
    Filed: August 29, 2011
    Publication date: March 1, 2012
    Applicants: DENSO CORPORATION, ADVICS CO., LTD.
    Inventors: Yuki NAKAMURA, Kunihito ANDO, Nobuhiko YOSHIOKA, Takahiro NAGANUMA, Tomoaki KAWABATA
  • Publication number: 20120051959
    Abstract: An O-ring has a shape including a first portion that is arranged side by side with a suction port in an axial direction, a second portion that is arranged side by side with a suction port, and a third portion that connects these portions. The first portion and the second portion are arranged to be displaced from each other in the axial direction. The third portion is arranged to extend in a direction different from a circumferential direction between the suction port and the suction port when a pump body is viewed in a radial direction. Thus, the suction ports can be located closer to each other in the axial direction. Therefore, the axial direction length of the pump body can be reduced, and size reduction of a rotary pump device can be achieved.
    Type: Application
    Filed: August 29, 2011
    Publication date: March 1, 2012
    Applicants: DENSO CORPORATION, ADVICS CO., LTD.
    Inventors: Yuki Nakamura, Kunihito Ando, Nobuhiko Yoshioka, Takahiro Naganuma, Tomoaki Kawabata
  • Patent number: 7599189
    Abstract: A resin case main body includes a connector housing, a component housing, and a joint portion. A busbar includes a reinforcement plate portion which is orthogonal to a plane of a board and is parallel to an alignment direction of the connector housing, the joint portion, and the component housing. The reinforcement plate portion is formed by insert molding in the joint portion.
    Type: Grant
    Filed: January 3, 2008
    Date of Patent: October 6, 2009
    Assignee: Advics Co., Ltd.
    Inventors: Kosei Nishimoto, Koji Yanai, Takahiro Naganuma
  • Publication number: 20080227315
    Abstract: A terminal adapted to be inserted into a through-hole of a board from an insertion end and electrically connected to the board, includes a body portion in a cylindrical shape, a first retaining portion outwardly extending from the body portion so as to be elastically deformable in a perpendicular direction relative to an axial direction of the body portion and contacting a first surface of the board or a boundary portion between the first surface and the through-hole, and a second retaining portion positioned at a counter-insertion end side relative to the first retaining portion, outwardly protruding from the body portion and contacting a second surface, which is an opposite surface of the first surface, or a boundary portion between the second surface and the through-hole.
    Type: Application
    Filed: March 14, 2008
    Publication date: September 18, 2008
    Inventors: Shigeki Banno, Takahiro Naganuma, Koji Yanai