Patents Assigned to Mikuni Corporation
  • Patent number: 10895204
    Abstract: A throttle device, including: a throttle valve (13) disposed in a plurality of intake passages (12) of a throttle body (11); a throttle shaft (14) supporting the throttle valve (13); a motor (15) for driving the throttle valve (13) to open and close through the throttle shaft (14); a rotation transmission mechanism (20) interposed between the motor (15) and the throttle shaft (14); and a position sensor to detect a displacement in the rotation transmission mechanism (20). The rotation transmission mechanism (20) is disposed at a position where the first and the second throttle bodies (11f, 11s) are adjacent, the motor (15) is disposed within an installation width Ws of either one of the first and the second throttle bodies (11f, 11s), and the throttle opening degree sensor (30) is disposed within an installation width Wt of the other one of the first and the second throttle bodies (11f, 11s).
    Type: Grant
    Filed: January 17, 2019
    Date of Patent: January 19, 2021
    Assignee: Mikuni Corporation
    Inventor: Daisuke Hamasaki
  • Patent number: 10851743
    Abstract: To provide a compact intake manifold which can easily and reliably hold the flame arrester (25) to the base member, the base member (21) having the flame arrester (25) incorporated therein has the recessed body portion (31) and the annular fitting holding portion (32) for fitting the flame arrester (25) in the axial direction. The fitting holding portion (32) includes an abutment surface (32a) and a fitting inner wall peripheral surface (32b). The flame arrester (25) includes a flame suppressing structure (26), an outer cylinder body (27) surrounding the flame suppression structure (26), and an elastic holder member (51) which covers the outer peripheral surface and both end faces of the outer cylindrical body (27). The elastic holder member (51) has an outer peripheral fitting portion (52) fitted to the fitting holding portion (32) while being held in close contact with the outer cylindrical body (27).
    Type: Grant
    Filed: August 17, 2016
    Date of Patent: December 1, 2020
    Assignee: Mikuni Corporation
    Inventor: Hirobumi Oosawa
  • Patent number: 10487710
    Abstract: A modular valve unit for controlling the flow rate of an intake or exhaust gas of a combustion engine through the passage of a valve, the valve unit comprising a valve having a valve housing (1) and at least one valve flap (2). The valve unit further comprises an interface (3) and an adapter (6), the interface (3) being connected to the valve housing (1) and having a support (32) and an engagement portion comprising at least two engagement legs (31) projecting from the distal end of the support (32) and being directed away from the valve housing (1). The adapter (6) has a connection plate (62) having at least two engagement orifices (61) for receiving the engagement legs (31) of the interface (3) and a mounting portion for holding an actuator (7). The at least two engagement orifices (61) of the connection plate (62) of the adapter (6) are each configured to engage the corresponding at least two engagement legs (31) of the engagement portion of the interface (3).
    Type: Grant
    Filed: February 21, 2018
    Date of Patent: November 26, 2019
    Assignees: Bosal Emission Control Systems NV, Mikuni Corporation
    Inventors: Keigo Suzuki, Vik Haesen
  • Patent number: 10443549
    Abstract: To provide an intake manifold which can reliably prevent the step from being formed in the inner wall surface of the intake passage (15) while having provided therein the fitting holding portion (32) for fitting and holding the flame arrester (25) in the axial direction, the intake manifold (10) includes a base member (21), a cover member (22) and a flame arrester (25) having a flame suppression structure. Between the flame arrester (25) and the radical stepped surface (31b) of the recessed body portion (31) is provided a retaining rectifying member (23) that prevents the flame arrester (25) from coming off with respect to the fitting holding portion (32) and forms a third inner peripheral surface (23a) continuous without a step from an opening portion on the other end side (25b) of the flame arrester (25) to the base side second inner wall surface (31c).
    Type: Grant
    Filed: August 17, 2016
    Date of Patent: October 15, 2019
    Assignee: Mikuni Corporation
    Inventor: Hirobumi Oosawa
  • Publication number: 20190277203
    Abstract: A throttle device, including: a throttle valve (13) disposed in a plurality of intake passages (12) of a throttle body (11); a throttle shaft (14) supporting the throttle valve (13); a motor (15) for driving the throttle valve (13) to open and close through the throttle shaft (14); a rotation transmission mechanism (20) interposed between the motor (15) and the throttle shaft (14); and a position sensor to detect a displacement in the rotation transmission mechanism (20). The rotation transmission mechanism (20) is disposed at a position where the first and the second throttle bodies (11f, 11s) are adjacent, the motor (15) is disposed within an installation width Ws of either one of the first and the second throttle bodies (11f, 11s), and the throttle opening degree sensor (30) is disposed within an installation width Wt of the other one of the first and the second throttle bodies (11f, 11s).
    Type: Application
    Filed: January 17, 2019
    Publication date: September 12, 2019
    Applicant: Mikuni Corporation
    Inventor: Daisuke HAMASAKI
  • Publication number: 20180245552
    Abstract: To provide an intake manifold which can reliably prevent the step from being formed in the inner wall surface of the intake passage (15) while having provided therein the fitting holding portion (32) for fitting and holding the flame arrester (25) in the axial direction, the intake manifold (10) includes a base member (21), a cover member (22) and a flame arrester (25) having a flame suppression structure. Between the flame arrester (25) and the radical stepped surface (31b) of the recessed body portion (31) is provided a retaining rectifying member (23) that prevents the flame arrester (25) from coming off with respect to the fitting holding portion (32) and forms a third inner peripheral surface (23a) continuous without a step from an opening portion on the other end side (25b) of the flame arrester (25) to the base side second inner wall surface (31c).
    Type: Application
    Filed: August 17, 2016
    Publication date: August 30, 2018
    Applicant: Mikuni Corporation
    Inventor: Hirobumi OOSAWA
  • Patent number: 9091231
    Abstract: Provided are a tamper cap (30) which synchronously rotates a pilot screw (20) as being fitted to the pilot screw (20), engaging portions (26?1, 26?2, 33) which engage the pilot screw (20) and the tamper cap (30), a plurality of elastically deforming portions (25?1, 25?2) to which the tamper cap (30) is fitted, and a holding member (40) which is press-fitted to a groove (24) formed at a center part of the elastically deforming portions (25?1, 25?2) and which maintains the engaged state by preventing elastic deformation of the elastically deforming portions (25?1, 25?2). Owing to that the tamper cap (30) is made of metal, the pilot screw (20) and the tamper cap (30) are stiffly fixed with a mechanical structure without using glue, while increasing non-destructivity compared to a resin-made tamper cap.
    Type: Grant
    Filed: December 6, 2012
    Date of Patent: July 28, 2015
    Assignee: Mikuni Corporation
    Inventors: Hiroo Yamada, Satoshi Murooka, Satoshi Fukaura, Naomi Seto
  • Patent number: 8966963
    Abstract: A glow plug includes: a heater power-conduction shaft that supplies power to a heater; a pressure detection element that is provided in an axial-direction end portion of the heater power-conduction shaft and converts pressure that the heater power-conduction shaft receives in the axial direction into an electrical signal; a first insulation member that surrounds an outer periphery of the pressure detection element with respect to the axis, and allows a signal output terminal of the pressure detection element to protrude toward an outer peripheral side of the axis; a power supply wire that is provided on an outer peripheral side of the first insulation member with respect to the axis, and is connected to the heater power-conduction shaft to supply power to the heater; a signal processing circuit that is provided on an outer peripheral side of the power supply wire with respect to the axis, and is connected to the signal output terminal to process an electrical signal of the pressure detection element; and a se
    Type: Grant
    Filed: May 15, 2012
    Date of Patent: March 3, 2015
    Assignee: Mikuni Corporation
    Inventors: Katsuhiko Fukui, Sou Matsumoto
  • Patent number: 8794103
    Abstract: An accelerator pedal apparatus includes a pedal arm rotating around a first rotation axis line and having a contact portion, a return spring and a reaction force adding mechanism including a drive source and a rotation member rotating around a second rotation axis line in a state of being contacted to the contact portion which adds reaction force to return the pedal arm toward the rest position. A first distance from the contact position of the rotation member with the contact portion to the first rotation axis line is longer than a second distance to the second rotation axis line. The rotation member includes a contact section having the contact portion displaced while being contacted so that the contact portion is to be closer to the second rotation axis line when rotating toward the maximum depression position and to be farther from the second rotation axis line when rotating toward the rest position.
    Type: Grant
    Filed: September 21, 2010
    Date of Patent: August 5, 2014
    Assignee: Mikuni Corporation
    Inventors: Tsuyoshi Osawa, Masato Kumamoto, Yoshitomo Fukushima, Kouji Kikuchi, Tsuyoshi Shimizu, Hisashi Kawade, Hiromutsu Touhachi
  • Patent number: 8738261
    Abstract: An accelerator pedal apparatus includes an accelerator pedal, a hysteresis generating mechanism which generates hysteresis on pedaling force, a reaction force adding mechanism which adds reaction force to push back the accelerator pedal toward a rest position, and controller which performs drive control of the reaction force adding mechanism, while the controller performs drive control of the reaction force adding mechanism so that reaction force is added during returning as well as during depressing of the accelerator pedal under predetermined conditions as the reaction force being larger than pedaling force difference between pedaling force at the depression side and pedaling force at the return side of the pedaling force hysteresis to obtain an appropriate accelerator feeling and to quickly perform danger avoidance or danger notification.
    Type: Grant
    Filed: February 23, 2012
    Date of Patent: May 27, 2014
    Assignee: Mikuni Corporation
    Inventors: Shigeru Yamazaki, Meguru Kashiyama, Masato Kumamoto, Tsuyoshi Oosawa, Hiromutsu Touhachi
  • Patent number: 8660746
    Abstract: An accelerator pedal apparatus includes a torque motor which generates operational reaction force corresponding to operation of an accelerator pedal, an accelerator pedal position sensor (APS) which detects an accelerator opening rate of an accelerator pedal and outputs the accelerator opening rate to an engine control unit (ECU) being an upper device, and a control unit which applies the operational reaction force as controlling driving of the torque motor. The control unit applies the operational reaction force as controlling driving of the torque motor based on the accelerator opening rate when being commanded to apply the operational reaction force by the ECU.
    Type: Grant
    Filed: November 30, 2011
    Date of Patent: February 25, 2014
    Assignee: Mikuni Corporation
    Inventors: Shigeru Yamazaki, Hiromutsu Touhachi
  • Patent number: 8657264
    Abstract: A carburetor choke mechanism including an actuator linearly expanded and contracted based on a temperature change; a connection lever which is connected to a rotation axis at one end, and rotates based on receiving a thrust of the actuator; a choke lever which is connected with the other end of the connection lever, and receives a rotary force; and a valve shaft where a choke valve is fixed to one end thereof, and a valve shaft lever which receives a transfer of a rotary force from the choke lever is provided on the other end thereof, wherein the choke lever has a bottomed cylindrical shape covering an outer circumference of the valve shaft lever, and the valve shaft lever penetrates a bottom thereof, and is provided rotatably, and a connection mechanism between the connection lever and the choke lever is provided inside a cylindrical outer periphery of the choke lever.
    Type: Grant
    Filed: October 23, 2012
    Date of Patent: February 25, 2014
    Assignee: Mikuni Corporation
    Inventors: Chirei Kin, Akihiro Sugizaki
  • Patent number: 8549957
    Abstract: A rotation angle detecting apparatus to detect a rotation angle of a rotating member, including a housing, the rotating member being disposed so as to be rotatable relative to the housing; a fixing member to fix a magnet to the rotating member; and a sensor, fixed to the housing, to detect a rotation angle of the magnet, the rotating member including an abutting part with which the magnet abuts in a direction of a rotation axis of the rotating member, and a supporting part that faces the abutting part with the magnet interposed therebetween to support the fixing member located between the magnet and the supporting part, and the fixing member presses the magnet against the abutting part by coming into contact with the supporting part and the magnet without allowing a section contacting the supporting part and a section contacting the magnet to overlap with each other.
    Type: Grant
    Filed: September 15, 2010
    Date of Patent: October 8, 2013
    Assignee: Mikuni Corporation
    Inventor: Takahiro Ogura
  • Patent number: 8521360
    Abstract: An accelerator pedal apparatus including an actuator pedal, a hysteresis generating mechanism which provides a hysteresis pedaling force characteristic having larger pedaling force in a depression direction than that in a return direction, and a reaction force adding control mechanism which adds operational reaction force to operation of the accelerator pedal based on an adjustment force generation command from an upper unit, while the operational reaction force added by the reaction force adding control mechanism is not larger than a hysteresis amount generated by the hysteresis generating mechanism.
    Type: Grant
    Filed: February 21, 2012
    Date of Patent: August 27, 2013
    Assignee: Mikuni Corporation
    Inventors: Shigeru Yamazaki, Meguru Kashiyama, Masato Kumamoto, Tsuyoshi Oosawa, Hiromutsu Touhachi
  • Patent number: 8499741
    Abstract: A throttle control device includes a throttle body having at least three air-intake passages aligned in line as being opened and closed respectively by a throttle valve, plural motors including a first motor which commonly operates the throttle valves placed at bilateral end sides among the throttle valves aligned in line and a second motor which operates a throttle valve placed at the inner side between the throttle valves at the bilateral end sides, and a transmitting portion which transmits operational force of the first motor to a first throttle shaft fixed to one throttle valve of the throttle valves at the bilateral end sides and to a second throttle shaft fixed to the other throttle valve thereof so as to rotate the first throttle shaft and the second throttle shaft in synchronization with each other.
    Type: Grant
    Filed: May 25, 2011
    Date of Patent: August 6, 2013
    Assignee: Mikuni Corporation
    Inventors: Michihiko Ishikawa, Riki Murasaka, Hiroyuki Shinohara
  • Patent number: 8464691
    Abstract: An accelerator device capable of achieving miniaturization and easily varying torque characteristics with a simple structure. The accelerator device includes a housing, a grip-side rotary body which is rotated with accelerator operation, a friction member including a contact portion to apply resistance due to friction as being contacted to the grip-side rotary body, an urging member which is connected to the housing via the friction member and connected to the grip-side rotary body and which urges the grip-side rotary body to rotate to an initial position side, and a restriction portion which is arranged at the housing and which restricts rotation of the friction member with the urging force of the urging member as being contacted to the friction member. Here, the friction member is urged by the urging member in a direction that the contact portion is pressed to an outer circumferential face of the rotary body having the restriction portion as a fulcrum.
    Type: Grant
    Filed: November 30, 2012
    Date of Patent: June 18, 2013
    Assignee: Mikuni Corporation
    Inventors: Masaki Hiei, Keigo Suzuki
  • Patent number: 8439015
    Abstract: A fuel injection apparatus including a plurality of throttle bodies, a fuel supply pipe to supply fuel to upstream and downstream side injectors; connecting pipes to connect the fuel supply pipe to the upstream side injectors and the downstream side injectors; upstream side branch passages to supply fuel branched from the fuel supply pipe to the respective upstream side injectors; downstream side branch passages to supply fuel branched from the fuel supply pipe to the respective downstream side injectors; a nip angle of the upstream side injectors is larger than a nip angle of the downstream side branch passages against the intake flow direction of the intake passage; and the nip angle of the downstream side branch passages is larger than a nip angle of the downstream side injectors against the intake flow direction of the intake passage.
    Type: Grant
    Filed: November 10, 2010
    Date of Patent: May 14, 2013
    Assignee: Mikuni Corporation
    Inventors: Takahiko Kimura, Atsushi Osanai
  • Patent number: 8400144
    Abstract: A rotational position sensor includes a rotating body rotatably supported around a predetermined axis line by a bearing portion of a housing and a sensor unit having a movable sensor element arranged at the rotating body to detect a rotational angle position of the rotating body and a fixed sensor element arranged at the housing. The rotating body includes a tapered annular contact face defining a part of a virtual cone face with a vertex on the axis line and the bearing portion includes a tapered annular bearing face rotatably supporting the annular contact face on the virtual cone face. Accordingly, the rotating body is consistently located on the axis line due to an automatic alignment effect. Therefore, the rotational angle position of the rotating body can be detected with high accuracy even with occurrence of aging variation such as wearing at a bearing area.
    Type: Grant
    Filed: September 29, 2010
    Date of Patent: March 19, 2013
    Assignee: Mikuni Corporation
    Inventors: Hiroaki Soyama, Yoshinobu Komoto
  • Patent number: 8381610
    Abstract: An accelerator device for performing an acceleration operation includes a rotary body which rotates with rotation of a grip, a magnet which rotates with rotation of the rotary body, a rotation angle detector which detects a rotation angle of the magnet, an urging member which returns the grip to an original point position by urging the rotary body, and a separation member which separates the rotary body and the rotation angle detector, the rotation angle detector is fixed to the separation member and the rotary body is rotatably held thereby while the urging member urges the rotary body toward the separation member as well as in the rotation direction, so that positional variation of the rotation angle detector against the magnet can be prevented.
    Type: Grant
    Filed: August 15, 2011
    Date of Patent: February 26, 2013
    Assignee: Mikuni Corporation
    Inventors: Masaki Hiei, Keigo Suzuki
  • Publication number: 20120272728
    Abstract: A hydrogen sensor comprising: a substrate, a detection film which is formed on the substrate and is composed of a rare earth metal, a protection film which is formed on the detection film and is a dispersion of hydrogen-permeable metal particles in a ceramic material, and a pair of electrodes which is formed apart on the protection film and are electrically connected with the detection film via the protection film. The hydrogen-permeable metal particles are Pd, Pt, Nb, V and Ta and the preferable content thereof is 20 to 70% by mass. It is preferred that the resistance of the protection film between the electrodes is 10 to 100,000 ? and that the resistance of the detection film in the interelectrode direction is smaller than the resistance of the protection film in the interelectrode direction.
    Type: Application
    Filed: September 18, 2007
    Publication date: November 1, 2012
    Applicant: Mikuni Corporation
    Inventors: Katsuhiko Fukui, Toshinori Hirayama