Patents by Inventor Kunio Nanba

Kunio Nanba 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).

  • Patent number: 11919501
    Abstract: A brake device for a vehicle includes: a brake pedal having a pedal part and a lever part that rotates about a rotation shaft when the pedal part is operated; a housing that rotatably supports the lever part; a reaction force generator connected to the housing and the lever part to generate a reaction force against the lever part according to a stroke amount of the brake pedal; and a stopper configured to stop the lever part by being in contact with the lever part such that the lever part is restricted from rotating in a direction opposite to a rotation direction when the pedal part is operated.
    Type: Grant
    Filed: June 9, 2022
    Date of Patent: March 5, 2024
    Assignee: DENSO CORPORATION
    Inventors: Daisuke Hokuto, Etsugou Yanagida, Kunio Nanba
  • Publication number: 20220348171
    Abstract: A brake device for a vehicle includes: a brake pedal having a pedal portion and a lever portion that rotates about a rotation axis when the pedal portion is operated; a housing that rotatably supports the lever portion; and a plate member configured to generate a reaction force with respect to the lever portion in response to a stroke amount of the brake pedal. The plate member has a longitudinal surface defined by a side extending in a longitudinal direction of the plate member and a side extending in a width direction of the plate member. The longitudinal surface is arranged so as to face the lever portion. When the pedal portion is operated, the plate member is bent to generate the reaction force.
    Type: Application
    Filed: July 11, 2022
    Publication date: November 3, 2022
    Inventors: Etsugou YANAGIDA, Kunio NANBA, Daisuke HOKUTO
  • Publication number: 20220348172
    Abstract: A brake device includes: a brake pedal including a pedal and a lever that rotates about a rotation axis when the pedal is operated; a housing that rotatably supports the lever; a reaction force generator that generates a reaction force to the lever in accordance with a stroke amount of the brake pedal by receiving a force from the lever when the brake pedal is operated; a deformation member including a deformation portion that is deformed by a force received from the lever when the brake pedal is operated in a state where the reaction force generated by the reaction force generator is generated; and a stroke sensor that outputs a signal corresponding to the stroke amount and outputs a value indicating that operation of the brake pedal is abnormal and instructing execution of control for stopping a vehicle when the deformation portion is deformed.
    Type: Application
    Filed: July 19, 2022
    Publication date: November 3, 2022
    Inventors: Etsugou YANAGIDA, Kunio NANBA, Daisuke HOKUTO
  • Publication number: 20220297650
    Abstract: A brake device for a vehicle includes: a brake pedal having a pedal part and a lever part that rotates about a rotation shaft when the pedal part is operated; a housing that rotatably supports the lever part; a reaction force generator connected to the housing and the lever part to generate a reaction force against the lever part according to a stroke amount of the brake pedal; and a stopper configured to stop the lever part by being in contact with the lever part such that the lever part is restricted from rotating in a direction opposite to a rotation direction when the pedal part is operated.
    Type: Application
    Filed: June 9, 2022
    Publication date: September 22, 2022
    Inventors: Daisuke HOKUTO, Etsugou YANAGIDA, Kunio NANBA
  • Publication number: 20220297645
    Abstract: A vehicle brake device includes a brake pedal having a pedal part and a lever part rotatable about a rotational shaft according to an operation of the pedal part, a housing rotatably supporting the lever part and being located in a vehicle compartment of a vehicle and on a partition wall that separates an outside of the vehicle compartment and an inside of the vehicle compartment, and a reaction force generator connected to the housing and the lever part and configured to generate a reaction force on the lever part in accordance with a stroke amount of the brake pedal.
    Type: Application
    Filed: June 10, 2022
    Publication date: September 22, 2022
    Inventors: Etsugou YANAGIDA, Daisuke HOKUTO, Kunio NANBA
  • Publication number: 20220297649
    Abstract: A vehicle brake system includes a vehicle brake device and a hydraulic pressure generation unit. The vehicle brake device includes: a brake pedal that has a pedal portion, and a lever portion rotating about a rotation axis in response to the pedal portion being operated; a stroke sensor that outputs a signal based on a stroke amount of the brake pedal; a housing that rotatably supports the lever portion; and a reaction force generation portion that generates a reaction force applied on the lever portion based on the stroke amount. The hydraulic pressure generation unit generates a hydraulic pressure for braking a vehicle.
    Type: Application
    Filed: June 8, 2022
    Publication date: September 22, 2022
    Inventors: Etsugou YANAGIDA, Daisuke HOKUTO, Kunio NANBA
  • Patent number: 10539146
    Abstract: A centrifugal pump includes a motor having a shaft, and an impeller engaged with an end portion of the shaft such that a rotation of the impeller relative to the shaft is limited. The impeller includes a main panel engaged with the shaft, a plurality of passage walls extending from the main panel in an axial direction, a side panel in contact with end surfaces of the passage walls that face away from the main panel, the side panel having an inflow opening at a radially center part, and a fluid passage that is defined by the passage walls adjacent to each other in a circumferential direction, the fluid passage communicating with the inflow opening. The side panel includes an engagement portion configured to be engaged with a fixation jig that limits a rotation of the impeller during fixing the impeller to the shaft by screwing a nut.
    Type: Grant
    Filed: May 26, 2016
    Date of Patent: January 21, 2020
    Assignee: DENSO CORPORATION
    Inventor: Kunio Nanba
  • Publication number: 20180135641
    Abstract: A centrifugal pump includes a motor having a shaft, and an impeller engaged with an end portion of the shaft such that a rotation of the impeller relative to the shaft is limited. The impeller includes a main panel engaged with the shaft, a plurality of passage walls extending from the main panel in an axial direction, a side panel in contact with end surfaces of the passage walls that face away from the main panel, the side panel having an inflow opening at a radially center part, and a fluid passage that is defined by the passage walls adjacent to each other in a circumferential direction, the fluid passage communicating with the inflow opening. The side panel includes an engagement portion configured to be engaged with a fixation jig that limits a rotation of the impeller during fixing the impeller to the shaft by screwing a nut.
    Type: Application
    Filed: May 26, 2016
    Publication date: May 17, 2018
    Inventor: Kunio NANBA
  • Patent number: 9938979
    Abstract: A centrifugal pump for pressurizing fluid by using centrifugal force has an impeller and a casing. The impeller is operated rotatably by an actuator. The casing houses the impeller. The impeller has blades arranged one after another in a circumferential direction of the impeller, and a passage is defined between the blades adjacent to each other in the circumferential direction. The passage has a linear portion and a curved portion. The linear portion extends linearly and has a uniform cross section. The curved portion is connected to an end of the linear portion, extends as being curved to a radial-outer side of the impeller, and decreases in cross section toward the radial-outer side.
    Type: Grant
    Filed: August 20, 2015
    Date of Patent: April 10, 2018
    Assignee: DENSO CORPORATION
    Inventors: Kunio Nanba, Yuta Hasebe
  • Patent number: 9689325
    Abstract: A purge pump is installed in a purge conduit, which forms a purge passage that communicates between an inside of a canister and an air intake passage. When a pressure of the air intake passage is equal to or smaller than a predetermined pressure, a large quantity of evaporative fuel, which is larger than a predetermined purge quantity, is introduced into the air intake passage. At this time, a pump electric power supply device supplies a relatively small amount of the electric power to the purge pump to run the purge pump. When the pressure of the air intake passage is larger than the predetermined pressure, the purge pump is driven to pump the evaporative fuel into the air intake passage. At that time, the pump electric power supply device supplies a relatively large amount of the electric power to the purge pump.
    Type: Grant
    Filed: March 30, 2015
    Date of Patent: June 27, 2017
    Assignee: DENSO CORPORATION
    Inventor: Kunio Nanba
  • Publication number: 20160138599
    Abstract: A centrifugal pump for pressurizing fluid by using centrifugal force has an impeller and a casing. The impeller is operated rotatably by an actuator. The casing houses the impeller. The impeller has blades arranged one after another in a circumferential direction of the impeller, and a passage is defined between the blades adjacent to each other in the circumferential direction. The passage has a linear portion and a curved portion. The linear portion extends linearly and has a uniform cross section. The curved portion is connected to an end of the linear portion, extends as being curved to a radial-outer side of the impeller, and decreases in cross section toward the radial-outer side.
    Type: Application
    Filed: August 20, 2015
    Publication date: May 19, 2016
    Inventors: Kunio NANBA, Yuta HASEBE
  • Publication number: 20150285170
    Abstract: A purge pump is installed in a purge conduit, which forms a purge passage that communicates between an inside of a canister and an air intake passage. When a pressure of the air intake passage is equal to or smaller than a predetermined pressure, a large quantity of evaporative fuel, which is larger than a predetermined purge quantity, is introduced into the air intake passage. At this time, a pump electric power supply device supplies a relatively small amount of the electric power to the purge pump to run the purge pump. When the pressure of the air intake passage is larger than the predetermined pressure, the purge pump is driven to pump the evaporative fuel into the air intake passage. At that time, the pump electric power supply device supplies a relatively large amount of the electric power to the purge pump.
    Type: Application
    Filed: March 30, 2015
    Publication date: October 8, 2015
    Inventor: Kunio NANBA
  • Patent number: 8807524
    Abstract: An electromagnetic valve includes a valve case, a covering member, a valve member, an urging device, and an electromagnetic driving unit. The case includes a side wall; a bottom wall; an opening; a peripheral end face; a valve accommodating part eccentrically relative to a central axis of the opening; and a first port. The covering member includes a top plate part welded on the end face to cover the opening; a second port; a cylindrical part; and a valve seat on an end face of the cylindrical part. The valve member is accommodated in the accommodating part, and engaged with/disengaged from the valve seat to close/open a flow passage of fluid between the first and second ports. The case includes an auxiliary wall symmetrically to the side wall located closer to a valve axis with respect to a shorter symmetry plane. The plate part is welded on an opening-side end face of the auxiliary wall.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: August 19, 2014
    Assignee: Denso Corporation
    Inventor: Kunio Nanba
  • Publication number: 20120097875
    Abstract: An electromagnetic valve includes a valve case, a covering member, a valve member, an urging device, and an electromagnetic driving unit. The case includes a side wall; a bottom wall; an opening; a peripheral end face; a valve accommodating part eccentrically relative to a central axis of the opening; and a first port. The covering member includes a top plate part welded on the end face to cover the opening; a second port; a cylindrical part; and a valve seat on an end face of the cylindrical part. The valve member is accommodated in the accommodating part, and engaged with/disengaged from the valve seat to close/open a flow passage of fluid between the first and second ports. The case includes an auxiliary wall symmetrically to the side wall located closer to a valve axis with respect to a shorter symmetry plane. The plate part is welded on an opening-side end face of the auxiliary wall.
    Type: Application
    Filed: September 23, 2011
    Publication date: April 26, 2012
    Applicant: DENSO CORPORATION
    Inventor: Kunio NANBA
  • Patent number: 7540278
    Abstract: A fluid control valve includes a housing defining therein a fluid passage. The fluid control valve further includes a valve member for controlling a fluid flow in the fluid passage by communicating and blocking by the fluid passage. The fluid control valve further includes a protection member being press-inserted into the housing for protecting the housing from heat of the fluid flow in the fluid passage. The housing is formed by die casting of an aluminum material. The protection member and a wall surface, which defines the fluid passage in the housing, define therebetween a thermal insulating layer for restricting thermal transmission of the fluid flow from the protection member toward the housing.
    Type: Grant
    Filed: April 11, 2007
    Date of Patent: June 2, 2009
    Assignee: DENSO CORPORATION
    Inventor: Kunio Nanba
  • Patent number: 7472886
    Abstract: A fluid control valve assembly is disclosed that includes a housing, a valve with a ring-shaped groove, and a seal ring with a clearance extending between an outer diameter and an inner diameter. The seal ring includes a pair of opposing axial side surfaces and is provided in the groove. The seal ring seals against the housing when the valve is in the closed position. The valve assembly also includes a backup ring provided in the groove adjacent one of the axial side surfaces of the seal ring to thereby obstruct fluid flow through the clearance of the seal ring when the valve is in the closed position.
    Type: Grant
    Filed: August 22, 2006
    Date of Patent: January 6, 2009
    Assignee: Denso Corporation
    Inventors: Osamu Shimane, Kunio Nanba
  • Publication number: 20070240690
    Abstract: A fluid control valve includes a housing defining therein a fluid passage. The fluid control valve further includes a valve member for controlling a fluid flow in the fluid passage by communicating and blocking by the fluid passage. The fluid control valve further includes a protection member being press-inserted into the housing for protecting the housing from heat of the fluid flow in the fluid passage. The housing is formed by die casting of an aluminum material. The protection member and a wall surface, which defines the fluid passage in the housing, define therebetween a thermal insulating layer for restricting thermal transmission of the fluid flow from the protection member toward the housing.
    Type: Application
    Filed: April 11, 2007
    Publication date: October 18, 2007
    Applicant: Denso Corporation
    Inventor: Kunio Nanba
  • Patent number: 7234444
    Abstract: Emission gas recycling equipment includes a passage for recycling a part of an emission gas and a control valve for controlling an amount of the part of the emission gas. The control valve includes: a housing having a pipe portion; a butterfly valve accommodated in the pipe portion rotatable in a first direction and a second direction; a seal ring for sealing a clearance; and valve open/close operation means for stopping the butterfly valve at the valve full close position after the valve open/close operation means operates the butterfly valve to open and to close equal to or more than one cycle across the valve full close position at the time when the engine stops or after the engine stops.
    Type: Grant
    Filed: December 18, 2006
    Date of Patent: June 26, 2007
    Assignee: DENSO Corporation
    Inventors: Kunio Nanba, Kazuto Maeda, Koji Hashimoto
  • Publication number: 20070095334
    Abstract: Emission gas recycling equipment includes a passage for recycling a part of an emission gas and a control valve for controlling an amount of the part of the emission gas. The control valve includes: a housing having a pipe portion; a butterfly valve accommodated in the pipe portion rotatable in a first direction and a second direction; a seal ring for sealing a clearance; and valve open/close operation means for stopping the butterfly valve at the valve full close position after the valve open/close operation means operates the butterfly valve to open and to close equal to or more than one cycle across the valve full close position at the time when the engine stops or after the engine stops.
    Type: Application
    Filed: December 18, 2006
    Publication date: May 3, 2007
    Applicant: DENSO CORPORATION
    Inventors: Kunio Nanba, Kazuto Maeda, Koji Hashimoto
  • Patent number: 7198039
    Abstract: A valve control device corrects a change rate of an opening degree of a valve in accordance with engine rotation speed when deposit elimination operation is performed. The valve control device corrects an inclination between a positive maximum opening degree and a negative maximum opening degree of the valve in accordance with the engine rotation speed when the deposit elimination operation is performed. Thus, when the engine rotation speed is low and a noise accompanying the deposit elimination operation becomes more audible, the change rate of the opening degree of the valve is reduced. As a result, the noise accompanying the deposit elimination operation is reduced and annoyance for vehicle occupants is reduced.
    Type: Grant
    Filed: January 12, 2006
    Date of Patent: April 3, 2007
    Assignees: Denso Corporation, Nippon Soken, Inc.
    Inventors: Eiji Takemoto, Masato Katsuno, Tatsuya Fujita, Kunio Nanba, Yoshinori Nakayama