Patents by Inventor Hiroto Tanaka

Hiroto Tanaka 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: 20160241108
    Abstract: A magnet 34 for the rotating shaft (first magnet, second magnet) is installed on the extended portion of the rotating shaft 33b in the gear housing 41, and Hall ICs 65a to 65c for the rotating shaft (first sensor, second sensor) are formed on the control board 60 inside the gear housing 41 so as to face the magnet 34 for the rotating shaft. The Hall ICs 65a to 65c for the rotating shaft are adapted to detect the rotation position of the rotating shaft 33b relative to the stator 32, that is, the rotation position of the rotor 33 relative to the stator 32, and the Hall ICs 65a to 65c for the rotating shaft are adapted to detect the rotation number of the rotating shaft 33b.
    Type: Application
    Filed: September 24, 2013
    Publication date: August 18, 2016
    Inventors: Masaaki Kimura, Hiroto Tanaka, Tamotsu Iwazaki
  • Publication number: 20160056686
    Abstract: A motor case (31) in which a stationary portion (35) is fixed, and a gear case (41) in which a gear mechanism (SD) is accommodated are made of aluminium, most heat generated from the stationary portion (35) at the time of actuation of a brushless wiper motor (20) can be directly dissipated outside from the motor case (31). That is, compared with conventional technique, heat transmitted to the motor case (31) can be efficiently dissipated outside, and the motor case (31) does not reach high temperature. Therefore, as a matter of course, reduction in size and weight can be achieved, suppression of electromagnetic noise can be achieved, and heat-resistance strength can be enhanced. Expensive components capable of resisting high temperatures are not required, and reduction in manufacturing cost can be achieved.
    Type: Application
    Filed: March 26, 2014
    Publication date: February 25, 2016
    Inventors: Takeshi Kanai, Hiroto Tanaka, Tomohiko Annaka, Naoki Kojima, Hirokazu Shoda
  • Patent number: 9180838
    Abstract: A motor control device is provided which controls a motor by performing switching between forward rotation and reverse rotation so as to cause an object to be controlled to reciprocate, the motor control device including a lead angle map storage unit configured to store a lead angle map in which a motor rotation speed and a lead angle to be set are associated for each of the forward rotation and the reverse rotation, a target rotation speed-setting unit configured to set a target rotation speed of the motor based on an input signal from outside, a lead angle-setting unit configured to obtain the lead angle associated with the set target rotation speed by referring to the lead angle map and set the lead angle as a lead angle of the motor, and a driving control unit configured to control rotation of the motor so as to achieve the set target rotation speed and the set lead angle.
    Type: Grant
    Filed: June 26, 2012
    Date of Patent: November 10, 2015
    Assignee: Mitsuba Corporation
    Inventors: Toshiyuki Amagasa, Hiroto Tanaka, Tamotsu Iwazaki
  • Publication number: 20150180314
    Abstract: In a brush holder accommodating part 26d of a gear housing 26, paired flat surface parts 26c and paired curved parts 26b are alternately disposed so as to be formed into an elliptical shape, one of the paired flat surface parts is formed with first heat sinks 26i, and two brushes 20 and 20 mounted on a brush holder unit 19 accommodated in the brush holder accommodating part 26d are disposed near the first heat sinks 26i.
    Type: Application
    Filed: March 4, 2015
    Publication date: June 25, 2015
    Inventors: Hiroto Tanaka, Takeshi Kanai, Masaaki Kimura, Koji Tsuchiya
  • Patent number: 9000634
    Abstract: In a brush holder accommodating part 26d of a gear housing 26, paired flat surface parts 26c and paired curved parts 26b are alternately disposed so as to be formed into an elliptical shape, one of the paired flat surface parts is formed with first heat sinks 26i, and two brushes 20 and 20 mounted on a brush holder unit 19 accommodated in the brush holder accommodating part 26d are disposed near the first heat sinks 26i.
    Type: Grant
    Filed: July 26, 2010
    Date of Patent: April 7, 2015
    Assignee: Mitsuba Corporation
    Inventors: Hiroto Tanaka, Takeshi Kanai, Masaaki Kimura, Koji Tsuchiya
  • Publication number: 20150082575
    Abstract: A brushless motor comprises: a stator 21 having armature coils 21a, 21b, and 21c; a rotor 22 which is rotated by a revolving magnetic field; and a switching element 30a, wherein the brushless motor has a rotation number control unit 33 which switches between low-speed and high-speed mode, wherein in the low-speed mode, the rotation number control unit 33 supplies current to the armature coils 21a, 21b, and 21c at predetermined energization timing and controls a duty ratio to control the rotation number of the rotor 22, and in the high-speed mode, the rotation number control unit 33 supplies current to the armature coils 21a, 21b, and 21c at energization timing advanced from the energization timing for the low-speed mode, thereby performing field weakening control of weakening the revolving magnetic field from that of the low-speed mode to control the rotation number of the rotor 22.
    Type: Application
    Filed: April 16, 2013
    Publication date: March 26, 2015
    Inventors: Masaaki Kimura, Hiroto Tanaka, Tamotsu Iwazaki, Tomohiko Annaka, Naoki Kojima, Junya Kitazawa
  • Publication number: 20140139148
    Abstract: A motor control device is provided which controls a motor by performing switching between forward rotation and reverse rotation so as to cause an object to be controlled to reciprocate, the motor control device including a lead angle map storage unit configured to store a lead angle map in which a motor rotation speed and a lead angle to be set are associated for each of the forward rotation and the reverse rotation, a target rotation speed-setting unit configured to set a target rotation speed of the motor based on an input signal from outside, a lead angle-setting unit configured to obtain the lead angle associated with the set target rotation speed by referring to the lead angle map and set the lead angle as a lead angle of the motor, and a driving control unit configured to control rotation of the motor so as to achieve the set target rotation speed and the set lead angle.
    Type: Application
    Filed: June 26, 2012
    Publication date: May 22, 2014
    Inventors: Toshiyuki Amagasa, Hiroto Tanaka, Tamotsu Iwazaki
  • Publication number: 20140018537
    Abstract: A cyclic amine derivative represented by the formula (II) is a GPR119 agonist, and is used as an agent for treating diabetes. wherein Ar0 is phenyl or phenyl having a substituent such as C1-8 alkylsulfonyl or the like, pyridyl, or pyridyl having a substituent such as C1-8 alkylsulfonyl; A0 is (CH2)p, O, or the like; B0 is (CH2)q, or the like, provided that B0 is neither O nor NR25 when A0 is O or NR24; one of U0 and V0 is N, and the other is N or CR26; each of X0 and Y0 is C1-3 alkylene or C1-3 alkylene having a substituent; R23 is a C1-8 alkyl group or the like; each of R21 and R22 is hydrogen, a halogen atom, or the like.
    Type: Application
    Filed: September 16, 2013
    Publication date: January 16, 2014
    Applicant: NIPPON CHEMIPHAR CO., LTD.
    Inventors: Tsuyoshi ENDO, Rie Takahashi, Hiroto Tanaka, Toshihiro Kunigami, Takaichi Hamano, Mai Okamura, Kaoru Hara
  • Patent number: 8536176
    Abstract: A cyclic amine derivative represented by the formula (II) is a GPR119 agonist, and is used as an agent for treating diabetes. wherein Ar0 is phenyl or phenyl having a substituent such as C1-8 alkylsulfonyl or the like, pyridyl, or pyridyl having a substituent such as C1-8 alkylsulfonyl; A0 is (CH2)p, O, or the like; B0 is (CH2)q, or the like, provided that B0 is neither O nor NR25 when A0 is O or NR24; one of U0 and V0 is N, and the other is N or CR26; each of X0 and Y0 is C1-3 alkylene or C1-3 alkylene having a substituent; R23 is a C1-8 alkyl group or the like; each of R21 and R22 is hydrogen, a halogen atom, or the like.
    Type: Grant
    Filed: July 31, 2009
    Date of Patent: September 17, 2013
    Assignee: Nippon Chemiphar Co., Ltd.
    Inventors: Tsuyoshi Endo, Rie Takahashi, Hiroto Tanaka, Toshihiro Kunigami, Takaichi Hamano, Mai Okamura, Kaoru Hara
  • Patent number: 8447493
    Abstract: The apparatus of the present invention corrects a control target value of ignition timing using a multipoint learned value AGdp(n) for compensating for a change amount of the ignition timing caused by time-dependent change of the engine and a basic learned value AG(i) for compensating for a change amount of the ignition timing caused by a factor other than the aforementioned time-dependent change of the engine. In a multipoint learning range n in which the time-dependent change of the engine influences the ignition timing to a great extent, the control target is corrected using the multipoint learned value AGdp(n) and the basic learned value AG(i). In ranges other than the multipoint learning range n, the control target is corrected using only the basic learned value AG(i).
    Type: Grant
    Filed: November 20, 2009
    Date of Patent: May 21, 2013
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Akito Onishi, Takashi Yoshida, Jun Aoki, Tomohiro Kisaku, Hiroto Tanaka, Rihito Kaneko, Kenji Senda
  • Patent number: 8301360
    Abstract: An output signal of a knock sensor is filtered with a plurality of band-pass filters to extract vibration waveform components of a plurality of frequency bands (f1-f4). Weighting coefficients (G1-G4) which multiply the vibration waveform component of each frequency band are established in such a manner as to be a small value as a noise intensity of each frequency band becomes larger. Thereby, the vibration waveform component of a plurality of frequency bands is synthesized by weighting according to an influence of a noise intensity of each frequency band. Even when the noise is superimposed on the vibration waveform component of any of the frequency bands, it becomes possible to reduce the influence of the noise and to synthesize the vibration waveform component of each frequency band, and an accurate knock determination can be performed based on the composite vibration waveform.
    Type: Grant
    Filed: July 23, 2008
    Date of Patent: October 30, 2012
    Assignees: Denso Corporation, Toyota Jidosha Kabushiki Kaisha
    Inventors: Satoshi Masuda, Rihito Kaneko, Satoshi Watanabe, Hiroto Tanaka, Kenji Senda, Norihito Hanai, Yasuhiro Yamasako
  • Publication number: 20120245344
    Abstract: A compound represented by the formula (II) is a GPR119 agonist, and is used as an agent for treating diabetes: wherein each of R23, R24, and R25 is hydrogen, halogen, C1-8 alkyl, C1-8 alkoxy, C1-8 alkylsulfonyl, or the like; each of Q0 and T0 is CH2 or the like, or Q0 and T0 are combined to form CH?CH or the like; A0 is (CH2)p, C(O), or a bond; B0 is a bond or the like; one of U0 and V0 is N, and the other is CR31 or the like; each of X0 and Y0 is CH2CH2 or the like; Z0 is C(O)OR32 or the like; and each of R21 and R22 is hydrogen, a halogen atom, hydroxyl, C1-8 alkyl, or the like.
    Type: Application
    Filed: August 30, 2010
    Publication date: September 27, 2012
    Applicant: NIPPON CHEMIPHAR CO., LTD.
    Inventors: Tsuyoshi Endo, Hiroto Tanaka, Toshihiro Takahashi, Toshihiro Kunigami
  • Publication number: 20120119601
    Abstract: In a brush holder accommodating part 26d of a gear housing 26, paired flat surface parts 26c and paired curved parts 26b are alternately disposed so as to be formed into an elliptical shape, one of the paired flat surface parts is formed with first heat sinks 26i, and two brushes 20 and 20 mounted on a brush holder unit 19 accommodated in the brush holder accommodating part 26d are disposed near the first heat sinks 26i.
    Type: Application
    Filed: July 26, 2010
    Publication date: May 17, 2012
    Inventors: Hiroto Tanaka, Takeshi Kanai, Masaaki Kimura, Koji Tsuchiya
  • Patent number: 8145411
    Abstract: An engine ECU executes a program including the steps of: calculating a knock magnitude N by dividing an integrated value lpkknk obtained by integrating the magnitude of vibration in the knock detection gate by BGL; controlling ignition timing according to a result of comparison between knock magnitude N and a determination value VJ; stopping updating of a standard deviation ? when it is determined that determination value VJ to be compared with knock magnitude N is to be changed; updating a median value VM by increasing an update amount of median value VM; and updating BGL according to median value VM and standard deviation ?.
    Type: Grant
    Filed: March 2, 2009
    Date of Patent: March 27, 2012
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Satoshi Watanabe, Hiroto Tanaka, Rihito Kaneko, Norihito Hanai, Kenji Senda, Satoshi Masuda
  • Publication number: 20110257865
    Abstract: The apparatus of the present invention corrects a control target value of ignition timing using a multipoint learned value AGdp(n) for compensating for a change amount of the ignition timing caused by time-dependent change of the engine and a basic learned value AG(i) for compensating for a change amount of the ignition timing caused by a factor other than the aforementioned time-dependent change of the engine. In a multipoint learning range n in which the time-dependent change of the engine influences the ignition timing to a great extent, the control target is corrected using the multipoint learned value AGdp(n) and the basic learned value AG(i). In ranges other than the multipoint learning range n, the control target is corrected using only the basic learned value AG(i).
    Type: Application
    Filed: November 20, 2009
    Publication date: October 20, 2011
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Akito Onishi, Takashi Yoshida, Jun Aoki, Tomohiro Kisaku, Hiroto Tanaka, Rihito Kaneko, Kenji Senda
  • Publication number: 20110257872
    Abstract: An output signal of a knock sensor is filtered with a plurality of band-pass filters to extract vibration waveform components of a plurality of frequency bands (f1-f4). Weighting coefficients (G1-G4) which multiply the vibration waveform component of each frequency band are established in such a manner as to be a small value as a noise intensity of each frequency band becomes larger. Thereby, the vibration waveform component of a plurality of frequency bands is synthesized by weighting according to an influence of a noise intensity of each frequency band. Even when the noise is superimposed on the vibration waveform component of any of the frequency bands, it becomes possible to reduce the influence of the noise and to synthesize the vibration waveform component of each frequency band, and an accurate knock determination can be performed based on the composite vibration waveform.
    Type: Application
    Filed: July 23, 2008
    Publication date: October 20, 2011
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, DENSO CORPORATION
    Inventors: Satoshi Masuda, Rihito Kaneko, Satoshi Watanabe, Hiroto Tanaka, Kenji Senda, Norihito Hanai, Yasuhiro Yamasako
  • Patent number: 7963269
    Abstract: A 90° integrated value calculating unit of an engine ECU calculates a 90° integrated value obtained by integrating a magnitude. A calculating unit calculates a knock magnitude by dividing 90° integrated value by a BGL. A value obtained by subtracting a standard deviation ? from a median value of 90° integrated value is determined as the BGL. An ignition timing control unit controls the ignition timing depending on whether knock magnitude is equal to or larger than a determination value. A median value calculating unit calculates median value of 90° integrated value. A standard deviation calculating unit calculates standard deviation of 90° integrated value. A first stop unit stops updating of median value and standard deviation when 90° integrated value is smaller than a first threshold value or is equal to or larger than a second threshold value.
    Type: Grant
    Filed: October 31, 2008
    Date of Patent: June 21, 2011
    Assignees: Toyota Jidosha Kabushiki Kaisha, Denso Corporation
    Inventors: Rihito Kaneko, Hiroto Tanaka, Satoshi Watanabe, Norihito Hanai, Yasuhiro Yamasako, Kenji Senda, Satoshi Masuda
  • Publication number: 20110137032
    Abstract: A cyclic amine derivative represented by the formula (II) is a GPR119 agonist, and is used as an agent for treating diabetes. wherein Ar0 is phenyl or phenyl having a substituent such as C1-8 alkylsulfonyl or the like, pyridyl, or pyridyl having a substituent such as C1-8 alkylsulfonyl; A0 is (CH2)p, O, or the like; B0 is (CH2)q, or the like, provided that B0 is neither O nor NR25 when A0 is O or NR24; one of U0 and V0 is N, and the other is N or CR26; each of X0 and Y0 is C1-3 alkylene or C1-3 alkylene having a substituent; R23 is a C1-8 alkyl group or the like; each of R21 and R22 is hydrogen, a halogen atom, or the like.
    Type: Application
    Filed: July 31, 2009
    Publication date: June 9, 2011
    Applicant: NIPPON CHEMIPHAR CO., LTD.
    Inventors: Tsuyoshi Endo, Rie Takahashi, Hiroto Tanaka, Toshihiro Kunigami, Takaichi Hamano, Mai Okamura, Kaoru Hara
  • Publication number: 20090217908
    Abstract: An engine ECU executes a program including the steps of: calculating a knock magnitude N by dividing an integrated value lpkknk obtained by integrating the magnitude of vibration in the knock detection gate by BGL; controlling ignition timing according to a result of comparison between knock magnitude N and a determination value VJ; stopping updating of a standard deviation ? when it is determined that determination value VJ to be compared with knock magnitude N is to be changed; updating a median value VM by increasing an update amount of median value VM; and updating BGL according to median value VM and standard deviation ?.
    Type: Application
    Filed: March 2, 2009
    Publication date: September 3, 2009
    Applicant: Toyota Jidosha Kabushiki Kaisha
    Inventors: Satoshi Watanabe, Hiroto Tanaka, Rihito Kaneko, Norihito Hanai, Kenji Senda, Satoshi Masuda
  • Publication number: 20090120410
    Abstract: A 90° integrated value calculating unit of an engine ECU calculates a 90° integrated value obtained by integrating a magnitude. A calculating unit calculates a knock magnitude by dividing 90° integrated value by a BGL. A value obtained by subtracting a standard deviation ? from a median value of 90° integrated value is determined as the BGL. An ignition timing control unit controls the ignition timing depending on whether knock magnitude is equal to or larger than a determination value. A median value calculating unit calculates median value of 90° integrated value. A standard deviation calculating unit calculates standard deviation of 90° integrated value. A first stop unit stops updating of median value and standard deviation when 90° integrated value is smaller than a first threshold value or is equal to or larger than a second threshold value.
    Type: Application
    Filed: October 31, 2008
    Publication date: May 14, 2009
    Inventors: Rihito Kaneko, Hiroto Tanaka, Satoshi Watanabe, Norihito Hanai, Yasuhiro Yamasako, Kenji Senda, Satoshi Masuda