Patents by Inventor Tetsuo Hayakawa

Tetsuo Hayakawa 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: 20240208524
    Abstract: An inter-vehicle distance sharing device includes a memory and a processor coupled to the memory. The processor coupled to the memory, the processor being configured to register, in advance, vehicles that share position information and a common registration point of each of the vehicles, and display, at a display unit installed at the vehicle of a specific member, a distance from each of the vehicles registered in advance to the common registration point.
    Type: Application
    Filed: October 31, 2023
    Publication date: June 27, 2024
    Inventors: Masahiro YAMADA, Tetsuo HAYAKAWA
  • Publication number: 20240157955
    Abstract: A processing server detects an incident of a vehicle by analyzing one of position information about the vehicle, image information about the periphery of the vehicle, and traveling data about the vehicle, which are acquired from the vehicle, and selects a new function corresponding to the detected incident. Then, the processing server gives notice of the proposal for the new function to the vehicle, as an estimated timing when a user having encountered the incident has cooled down while the user's memory about the incident is clear.
    Type: Application
    Filed: September 6, 2023
    Publication date: May 16, 2024
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Masahiro YAMADA, Hideo SUGANUMA, Tetsuo HAYAKAWA
  • Publication number: 20240161612
    Abstract: A vehicle notification device acquires a congestion situation of rest facilities existing on a guidance route on an expressway, acquires position information of a first rest facility that is the closest rest facility to a current location of an own vehicle and position information of a second rest facility that is the next closest rest facility to the current location following the first rest facility, among rest facilities for which determination is made that a rest is possible from the congestion situation, predicts time required to move from the first rest facility to the second rest facility, and when the time is more than a preset threshold value, performs notification prompting a rest at the first rest facility.
    Type: Application
    Filed: September 7, 2023
    Publication date: May 16, 2024
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Tetsuo HAYAKAWA
  • Patent number: 11441522
    Abstract: A fuel pump unit includes a suction filter and a fuel pump. The fuel pump includes: a rotatable shaft placed along a rotational axis; a rotor portion that rotates in response to rotation of the rotatable shaft; a suction hole portion, through which the fuel is suctioned into an inside of a rotor receiving chamber; and an outer peripheral wall that surrounds the suction hole portion. The suction filter includes: a filter element that filters the fuel and conducts the filtered fuel into an inside space; and a columnar hole portion having an inner peripheral wall, while the outer peripheral wall and the inner peripheral wall are fitted with each other, so that the columnar hole portion communicates between the inside space and the suction hole portion. The columnar hole portion is placed such that the rotational axis extends on an inner side of the inner peripheral wall.
    Type: Grant
    Filed: November 25, 2016
    Date of Patent: September 13, 2022
    Assignee: DENSO CORPORATION
    Inventors: Tetsuo Hayakawa, Hiromi Sakai, Daiji Furuhashi
  • Patent number: 10851778
    Abstract: A casing of a housing of a fuel pump has a bearing surface that rotatably supports an inner gear in an axial direction from a motor side while a plain bearing extends through the bearing surface. The plain bearing includes: an inner-peripheral-side step that is stepped by increasing an inner diameter of the plain bearing on a counter-motor side of the inner-peripheral-side step in the axial direction; and an outer-peripheral-side step that is stepped by increasing an outer diameter of the plain bearing on the motor side of the outer-peripheral-side step at a position that is on the motor side of the bearing surface in the axial direction.
    Type: Grant
    Filed: December 1, 2016
    Date of Patent: December 1, 2020
    Assignee: DENSO CORPORATION
    Inventors: Daiji Furuhashi, Hiromi Sakai, Tetsuo Hayakawa
  • Publication number: 20180372096
    Abstract: A casing of a housing of a fuel pump has a bearing surface that rotatably supports an inner gear in an axial direction from a motor side while a plain bearing extends through the bearing surface. The plain bearing includes: an inner-peripheral-side step that is stepped by increasing an inner diameter of the plain bearing on a counter-motor side of the inner-peripheral-side step in the axial direction; and an outer-peripheral-side step that is stepped by increasing an outer diameter of the plain bearing on the motor side of the outer-peripheral-side step at a position that is on the motor side of the bearing surface in the axial direction.
    Type: Application
    Filed: December 1, 2016
    Publication date: December 27, 2018
    Inventors: Daiji FURUHASHI, Hiromi SAKAI, Tetsuo HAYAKAWA
  • Publication number: 20180363607
    Abstract: A fuel pump unit includes a suction filter and a fuel pump. The fuel pump includes: a rotatable shaft placed along a rotational axis; a rotor portion that rotates in response to rotation of the rotatable shaft; a suction hole portion, through which the fuel is suctioned into an inside of a rotor receiving chamber; and an outer peripheral wall that surrounds the suction hole portion. The suction filter includes: a filter element that filters the fuel and conducts the filtered fuel into an inside space; and a columnar hole portion having an inner peripheral wall, while the outer peripheral wall and the inner peripheral wall are fitted with each other, so that the columnar hole portion communicates between the inside space and the suction hole portion. The columnar hole portion is placed such that the rotational axis extends on an inner side of the inner peripheral wall.
    Type: Application
    Filed: November 25, 2016
    Publication date: December 20, 2018
    Inventors: Tetsuo HAYAKAWA, Hiromi SAKAI, Daiji FURUHASHI
  • Patent number: 10148150
    Abstract: A cover end of a fuel pump is formed by resin molding and has a tubular portion, which holds a bearing that is placed along a central axis of the tubular portion and rotatably supports one end portion of a shaft of a motor arrangement. Furthermore, three terminals, which supply three-phase electric power received from an outside to windings on a phase-by-phase basis, are insert molded in the cover end. In the cover end, a first transverse passage, which is formed between the first terminal and the second terminal in a circumferential direction, and a second transverse passage, which is formed between the second terminal and the third terminal in the circumferential direction, are configured into a form of V-shape, which diverges in a radially outer direction, in a view taken in an axial direction.
    Type: Grant
    Filed: September 3, 2014
    Date of Patent: December 4, 2018
    Assignee: DENSO CORPORATION
    Inventors: Kiyoshi Nagata, Tetsuo Hayakawa, Masaya Ootake
  • Patent number: 10107291
    Abstract: Partitioned chambers of an electric connector, which receive connection terminals electrically connected to windings of a stator, are communicated with an outside of the electric connector through primary communication holes. The primary communication holes are formed to direct at least one of perpendicular directions, each of which is perpendicular to a corresponding one of opening planes of outside openings of the primary communication holes, toward a downside when a central axis of a fuel pump is tilted relative to a vertical direction. In this way, a foreign object, which is accumulated in any of the portioned chambers, can be outputted to the outside through the primary communication hole even when the fuel pump is tilted in any direction.
    Type: Grant
    Filed: September 3, 2014
    Date of Patent: October 23, 2018
    Assignee: DENSO CORPORATION
    Inventors: Masaya Ootake, Tetsuo Hayakawa, Kiyoshi Nagata
  • Patent number: 10047752
    Abstract: A fuel chamber is formed between a pump arrangement and a motor arrangement, and outer flow passages are formed between a stator of the motor arrangement and a housing. Fuel, which is discharged from a discharge port of the pump arrangement, is outputted to an outside of the housing from a fuel discharge conduit that is formed on a side of the motor arrangement, which is opposite from the pump arrangement, after passing through the motor arrangement. At a time of performing electroplating on the stator, electrode contact portions, to which electrodes can contact, is formed in an outer wall of the stator, which forms the outer flow passages.
    Type: Grant
    Filed: September 3, 2014
    Date of Patent: August 14, 2018
    Assignee: DENSO CORPORATION
    Inventors: Tetsuo Hayakawa, Hiromi Sakai, Kiyoshi Nagata
  • Patent number: 9476394
    Abstract: A motor includes a stator with a bobbin. The bobbin has a lower end winding portion, a head part retainer portion that retains a head part of a winding, and a control portion disposed between the lower end winding portion and the head part retainer portion. A head part retainer surface formed on a pump part side of the head part retainer portion and an end face formed on a pump part side of the control portion are positioned on the same plane and on a pump part side relative to a winding retainer surface that is formed on a pump part side of the lower end winding portion. Thus, when the winding is wound in layers onto the winding retainer surface of the bobbin, collapsing of a middle part of the winding onto the head part of the winding is prevented.
    Type: Grant
    Filed: May 30, 2014
    Date of Patent: October 25, 2016
    Assignee: DENSO CORPORATION
    Inventors: Tetsuo Hayakawa, Eiji Miyazaki
  • Publication number: 20160201623
    Abstract: A cover end of a fuel pump is formed by resin molding and has a tubular portion, which holds a bearing that is placed along a central axis of the tubular portion and rotatably supports one end portion of a shaft of a motor arrangement. Furthermore, three terminals, which supply three-phase electric power received from an outside to windings on a phase-by-phase basis, are insert molded in the cover end. In the cover end, a first transverse passage, which is formed between the first terminal and the second terminal in a circumferential direction, and a second transverse passage, which is formed between the second terminal and the third terminal in the circumferential direction, are configured into a form of V-shape, which diverges in a radially outer direction, in a view taken in an axial direction.
    Type: Application
    Filed: September 3, 2014
    Publication date: July 14, 2016
    Inventors: Kiyoshi NAGATA, Tetsuo HAYAKAWA, Masaya OOTAKE
  • Publication number: 20160201680
    Abstract: A fuel chamber is formed between a pump arrangement and a motor arrangement, and outer flow passages are formed between a stator of the motor arrangement and a housing. Fuel, which is discharged from a discharge port of the pump arrangement, is outputted to an outside of the housing from a fuel discharge conduit that is formed on a side of the motor arrangement, which is opposite from the pump arrangement, after passing through the motor arrangement. At a time of performing electroplating on the stator, electrode contact portions, to which electrodes can contact, is formed in an outer wall of the stator, which forms the outer flow passages.
    Type: Application
    Filed: September 3, 2014
    Publication date: July 14, 2016
    Inventors: Tetsuo HAYAKAWA, Hiromi SAKAI, Kiyoshi NAGATA
  • Publication number: 20160201679
    Abstract: Partitioned chambers of an electric connector, which receive connection terminals electrically connected to windings of a stator, are communicated with an outside of the electric connector through primary communication holes. The primary communication holes are formed to direct at least one of perpendicular directions, each of which is perpendicular to a corresponding one of opening planes of outside openings of the primary communication holes, toward a downside when a central axis of a fuel pump is tilted relative to a vertical direction. In this way, a foreign object, which is accumulated in any of the portioned chambers, can be outputted to the outside through the primary communication hole even when the fuel pump is tilted in any direction.
    Type: Application
    Filed: September 3, 2014
    Publication date: July 14, 2016
    Inventors: Masaya OOTAKE, Tetsuo HAYAKAWA, Kiyoshi NAGATA
  • Patent number: 9369022
    Abstract: An electric motor has multiple core portions, multiple bobbins covering the respective core portions, and multiple coil windings wound on the respective core portions and bobbins. Each of the bobbins has a first and a second circumferential forward ends, at which a first and a second holding portions are formed. The first holding portion holds a winding-start portion and the second holding portion holds a winding-end portion. The winding-start portion is prevented from being brought into contact with the winding-end portion and main winding portion of the coil winding between the winding-start portion and the winding-end portion.
    Type: Grant
    Filed: May 9, 2013
    Date of Patent: June 14, 2016
    Assignee: DENSO CORPORATION
    Inventors: Tetsuo Hayakawa, Masaya Ootake, Kiyoshi Nagata
  • Publication number: 20140363320
    Abstract: A motor includes a stator with a bobbin. The bobbin has a lower end winding portion, a head part retainer portion that retains a head part of a winding, and a control portion disposed between the lower end winding portion and the head part retainer portion. A head part retainer surface formed on a pump part side of the head part retainer portion and an end face formed on a pump part side of the control portion are positioned on the same plane and on a pump part side relative to a winding retainer surface that is formed on a pump part side of the lower end winding portion. Thus, when the winding is wound in layers onto the winding retainer surface of the bobbin, collapsing of a middle part of the winding onto the head part of the winding is prevented.
    Type: Application
    Filed: May 30, 2014
    Publication date: December 11, 2014
    Applicant: DENSO CORPORATION
    Inventors: Tetsuo HAYAKAWA, Eiji MIYAZAKI
  • Publication number: 20130315759
    Abstract: An electric motor has multiple core portions, multiple bobbins covering the respective core portions, and multiple coil windings wound on the respective core portions and bobbins. Each of the bobbins has a first and a second circumferential forward ends, at which a first and a second holding portions are formed. The first holding portion holds a winding-start portion and the second holding portion holds a winding-end portion. The winding-start portion is prevented from being brought into contact with the winding-end portion and main winding portion of the coil winding between the winding-start portion and the winding-end portion.
    Type: Application
    Filed: May 9, 2013
    Publication date: November 28, 2013
    Applicant: Denso Corporation
    Inventors: Tetsuo HAYAKAWA, Masaya OOTAKE, Kiyoshi NAGATA
  • Patent number: 7389768
    Abstract: A pump module, which is mounted to a fuel tank, includes a sub-tank, a fuel pump and an elastic member. The sub-tank is accommodated in the fuel tank. The fuel pump is accommodated in the sub-tank to pump fuel drawn into the sub-tank. The elastic member is formed of an elastomer, and is interposed between a bottom portion of the sub-tank and a bottom portion of the fuel tank. The elastic member makes contact with fuel. The elastic member internally has spaces to release stress that arises in the elastic member due to swelling caused by contacting with fuel. The elastic member is formed in a sheet. The elastic member is mounted to the sub-tank via an outer periphery of the elastic member. The spaces are arranged in a substantially circumferential direction of the sub-tank, or are arranged in a substantially radial direction of the sub-tank.
    Type: Grant
    Filed: March 29, 2005
    Date of Patent: June 24, 2008
    Assignee: Denso Corporation
    Inventors: Tetsuo Hayakawa, Hideto Takahashi, Tadashi Hazama
  • Patent number: D770537
    Type: Grant
    Filed: May 7, 2015
    Date of Patent: November 1, 2016
    Assignee: DENSO CORPORATION
    Inventors: Masaya Ootake, Yuuji Hidaka, Kiyoshi Nagata, Tetsuo Hayakawa
  • Patent number: D771712
    Type: Grant
    Filed: May 7, 2015
    Date of Patent: November 15, 2016
    Assignee: DENSO CORPORATION
    Inventors: Masaya Ootake, Yuuji Hidaka, Kiyoshi Nagata, Tetsuo Hayakawa