Patents Assigned to Soken Inc.
  • Patent number: 10891738
    Abstract: In a boundary line recognition apparatus, based on luminance levels of an image captured by a camera, candidate edge points of a boundary line sectioning a travel road are extracted, and a candidate line of the boundary line is extracted. An apparent width of the candidate line on an image is calculated, from a width of the candidate line in a horizontal direction of the image and an angle of the candidate line relative to a vertical direction of the image. A probability of a candidate line being a boundary line is calculated to be higher, as a degree of the candidate line having characteristics as a boundary line is higher. The calculated probabilities are integrated in respect of a plurality of characteristics to recognize a boundary line. The characteristics include a ratio of the calculated apparent width to an image blur degree is larger than a predetermined value.
    Type: Grant
    Filed: May 8, 2018
    Date of Patent: January 12, 2021
    Assignees: NIPPON SOKEN, INC., DENSO CORPORATION
    Inventors: Syunya Kumano, Naoki Kawasaki, Shunsuke Suzuki, Tetsuya Takafuji, Kazuma Hashimoto
  • Patent number: 10870334
    Abstract: An ionic wind delivery device includes a first discharge electrode; a reference electrode arranged separate from the first discharge electrode; a first power supply circuit configured to output a voltage to induce a corona discharge between the first discharge electrode and the reference electrode; a control electrode arranged on a delivery path of an ionic wind of ions that are generated by the corona discharge induced between the first discharge electrode and the reference electrode; a second discharge electrode arranged between the reference electrode and the control electrode; and a second power supply circuit configured to output a voltage to accelerate the ions generated by the corona discharge induced between the first discharge electrode and the reference electrode and to induce a corona discharge between the second discharge electrode and the control electrode.
    Type: Grant
    Filed: July 28, 2016
    Date of Patent: December 22, 2020
    Assignees: DENSO CORPORATION, SOKEN, INC.
    Inventors: Noboru Maeda, Koji Ito
  • Patent number: 10866161
    Abstract: A road surface condition estimation apparatus may output a detection signal corresponding to a magnitude of a vibration of a tire. The road surface condition estimation apparatus may calculate a level of high frequency component of the detection signal in a contact section. The road surface condition estimation apparatus may transmit a calculation result of the level of high frequency component as road surface condition data each time the tire rotates for a predetermined number of times. The road surface condition estimation apparatus may estimate a condition of road surface based on the road surface condition data. The road surface condition estimation apparatus may stop transmitting the road surface condition data when estimating that the vehicle accelerates or decelerates.
    Type: Grant
    Filed: December 18, 2018
    Date of Patent: December 15, 2020
    Assignees: DENSO CORPORATION, SOKEN, INC.
    Inventors: Yoichiro Suzuki, Takatoshi Sekizawa
  • Patent number: 10768275
    Abstract: An antenna apparatus includes a dielectric substrate, a base plate, an antenna unit, and a reflecting unit. A plurality of conductor patches are structured to resonate, at an operating frequency of the antenna unit, in a resonating direction which is different from a polarization direction Dan of a radio wave transmitted and received by the antenna unit.
    Type: Grant
    Filed: April 6, 2017
    Date of Patent: September 8, 2020
    Assignees: DENSO CORPORATION, SOKEN, INC.
    Inventors: Kazushi Kawaguchi, Kazumasa Sakurai, Toshiya Sakai, Asahi Kondo
  • Publication number: 20200273615
    Abstract: An electromagnetic coil through which current is passed to generate a magnetic flux, a fixed core, a movable core, a magnetic spring disposed between the cores and, and a yoke are provided. The magnetic spring includes a magnetic substance, and biases the movable core in a direction in which the movable core is separated from the fixed core in a Z direction. Additionally, the magnetic spring includes a leaf spring member including the magnetic substance and spirally wound, and a central portion of the magnetic spring is located biased toward one side in the Z direction compared to a peripheral portion of the magnetic spring. When the movable core is attracted to the access position, the magnetic spring is prevented from being deformed to a minimum spring length corresponding to a width of the leaf spring member.
    Type: Application
    Filed: May 11, 2020
    Publication date: August 27, 2020
    Applicants: SOKEN, INC., DENSO CORPORATION, ANDEN CO., LTD.
    Inventors: Yoshitaka NISHIGUCHI, Takahiro SOKI, Masanao SUGISAWA
  • Patent number: 10752775
    Abstract: A silicone composition is provided comprising (A) an alkenyl-containing organopolysiloxanc having a viscosity of 1.0-100 Pa·s at 25° C., (B) an organopolysiloxane of formula (1), (C) an organohydrogenpolysiloxane of formula (2), (D) an organohydrogenpolysiloxane of formula (3), (E) a filler, (F) a platinum group metal catalyst, and (G) a reaction inhibitor. The composition has a low viscosity and good moldability prior to curing and cures into a dilatant product that exhibits a low storage elastic modulus at a low strain rate and a high storage elastic modulus at a high strain rate.
    Type: Grant
    Filed: December 27, 2017
    Date of Patent: August 25, 2020
    Assignees: SHIN-ETSU CHEMICAL CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHA, SOKEN, INC.
    Inventors: Nobuaki Matsumoto, Akira Sakamoto, Naomi Goto, Masahiko Ishii, Hiroaki Takeuchi, Yushi Suzuki, Shinji Miyoshi
  • Patent number: 10731770
    Abstract: An actuator includes a rod, an electric motor to generate a rotational driving force on supply of electricity, an output shaft to output the rotational driving force of the electric motor to the rod, a feed screw mechanism, and a rotation prevention mechanism. The feed screw mechanism includes a female screw portion formed on one of the output shaft and the rod, and a male screw portion formed on the other to mesh with the female screw portion. The rotation prevention mechanism is configured to regulate rotation of the rod caused by the rotational driving force of the electric motor.
    Type: Grant
    Filed: July 7, 2016
    Date of Patent: August 4, 2020
    Assignees: DENSO CORPORATION, SOKEN, INC.
    Inventors: Yasuhiro Kawase, Yukikatsu Ozaki, Mikio Matsuda, Tetsuya Itou, Sadahisa Onimaru, Hiroki Ishii
  • Patent number: 10696125
    Abstract: A vehicle air conditioner includes a casing, a heater core that heats an air flow by heat exchange between the air flow and a heat medium, an electric heater that heats an air flow by an electric power, and a determiner that determines whether a temperature of the heat medium is equal to or lower than a predetermined temperature. When the determiner determines that the temperature of the heat medium is equal to or lower than the predetermined temperature, an air flow introduced into a casing is heated by the electric heater and flows toward the vehicle interior without passing through the heater core.
    Type: Grant
    Filed: August 26, 2016
    Date of Patent: June 30, 2020
    Assignees: DENSO CORPORATION, SOKEN, INC.
    Inventors: Koji Ito, Yasuhiko Niimi, Jun Yamaoka, Takashi Saitou
  • Patent number: 10693451
    Abstract: A ringing suppressor circuit is connected to a differential signal transmission line that includes a high potential signal line and low potential signal line pair for transmitting high and low level differential signals, and includes a ringing suppressor and a stopper. When the differential signal changes to a high level, the ringing suppressor suppresses ringing by lowering the impedance between the signal lines by turning ON of a switching element. When a differential signal voltage drops below a voltage lowering determination voltage, the stopper stops the impedance lowering function of the ringing suppressor by turning OFF another switching element.
    Type: Grant
    Filed: February 12, 2019
    Date of Patent: June 23, 2020
    Assignees: SOKEN, INC., DENSO CORPORATION
    Inventors: Youhei Sekiya, Hiroyuki Mori, Tomohisa Kishigami
  • Patent number: 10691959
    Abstract: In a travelling road estimating apparatus, an estimator estimates, based on the coordinates of at least one of edge points included in a selected candidate, a road parameter using a previously prepared filter having an adjustable response level. The road parameter is associated with a condition of the travelling road relative to the vehicle and a shape of the travelling road. A determiner determines whether there is an unstable situation that causes an accuracy of estimating the edge points by an edge extractor to be reduced. A response level adjuster adjusts the response level of the filter in accordance with determination of whether there is an unstable situation that causes an accuracy of estimating the edge points by the edge extractor to be reduced.
    Type: Grant
    Filed: January 15, 2018
    Date of Patent: June 23, 2020
    Assignees: SOKEN, INC., DENSO CORPORATION
    Inventors: Shunya Kumano, Shunsuke Suzuki, Kenta Hoki
  • Patent number: 10686374
    Abstract: A control apparatus performs peak current mode control in which a drive switch is turned off when output of a comparator is inverted during an on-operation period determined by a basic signal. The comparator inverts the output when a reactor current increases to a command current. The control apparatus determines that a switching frequency of the drive switch is required to be switched when the output of the comparator is detected to have not become inverted during the single switching period while the peak current mode control is being performed. The control apparatus sets the switching frequency to a first frequency when the switching determining unit determines that the switching frequency is not required to be switched, and switches the switching frequency from the first frequency to a second frequency lower than the first frequency when the switching determining unit determines that the switching frequency is required to be switched.
    Type: Grant
    Filed: November 15, 2018
    Date of Patent: June 16, 2020
    Assignees: SOKEN, INC., DENSO CORPORATION
    Inventors: Kenji Tomita, Seiji Iyasu, Yuichi Handa
  • Patent number: 10655746
    Abstract: A solenoid valve includes a coil, a valve element receiving portion, a valve element placed inside of the valve element receiving portion, and a valve portion configured to open and close a gas flow path accompanied with move of the valve element. Either a surface of the valve element opposed to the valve element receiving portion or a surface of the valve element receiving portion opposed to the valve element has a first groove that is extended in an axial direction and a second groove that is arranged to intersect with the first groove and to be extended in a circumferential direction. The first groove is formed to be extended at least from the second groove toward a valve portion-side.
    Type: Grant
    Filed: April 11, 2018
    Date of Patent: May 19, 2020
    Assignees: SOKEN, INC., TOYOTA JIDOSHA KABUSHIKI KAISHA, JTEKT CORPORATION
    Inventors: Ryosuke Hori, Hiroki Yahashi, Koji Kida, Akio Nakamura, Takuya Suzuki
  • Patent number: 10656269
    Abstract: A parallel running vehicle detecting apparatus is provided, which includes a first distance sensor for detecting distance of an object in a first detection area on a rear lateral side of a vehicle, a second distance sensor for detecting distance of an object in a second detection area, a parallel running vehicle detector for detecting a parallel running vehicle based on detections of the first and second distance sensors, and a storage for storing a detection distance history of the second distance sensor. The parallel running vehicle detector is provided with multiple determination conditions for determining whether the object detected by the first distance sensor is the parallel running vehicle, and changes the parallel running vehicle determination condition based on the detection distance history stored in the storage.
    Type: Grant
    Filed: October 4, 2016
    Date of Patent: May 19, 2020
    Assignees: SOKEN, INC., DENSO CORPORATION
    Inventors: Mitsuyasu Matsuura, Akio Nakano, Tooru Yoshida
  • Patent number: 10635911
    Abstract: In an apparatus for recognizing a travel lane of a vehicle, a deviation determiner is configured to, if two or more shape change points are extracted by a shape change point extractor and the second derivative value of curvature of an extracted boundary line at at least one of the two or more shape change points is inverted in sign, determine whether or not the extracted boundary line and an estimated boundary line estimated from travel lane parameters estimated by a travel lane parameter estimator are deviating from each other beyond a predetermined allowable range. A driving aid is configured to, if it is determined that the extracted boundary line and the estimated boundary line are deviating from each other beyond the predetermined allowable range, perform control upon deviation to prevent occurrence of undesirable situations that may be caused by deviation between the extracted boundary line and the estimated boundary line.
    Type: Grant
    Filed: January 15, 2018
    Date of Patent: April 28, 2020
    Assignees: DENSO CORPORATION, SOKEN, INC.
    Inventors: Shunya Kumano, Naoki Nitanda, Akihiro Watanabe
  • Patent number: 10629920
    Abstract: Provided is a valve unit including a first gas flow channel to a gas tank and a second gas flow channel branching off from the first gas flow channel and leading to a gas-consuming device. The valve unit can avoid the entrance of water, which may be included in gas, into the second gas flow channel. The first gas flow channel to let gas from the outside in has a bend. The first gas flow channel has a communication port to the gas tank at an end downstream of the bend. A second gas flow channel branches off at a branching part between the bend and the communication port, and the second gas flow channel leads to the gas-consuming device. A straightening member is disposed between the bend and the branching part, and is to straighten the gas flow from the upstream to be parallel to the direction of the first gas flow channel.
    Type: Grant
    Filed: February 8, 2018
    Date of Patent: April 21, 2020
    Assignees: SOKEN, INC., TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Ryosuke Hori, Hiroki Yahashi, Koji Kida
  • Patent number: 10604112
    Abstract: A control system includes: a transmission device that transmits a plurality of signals having different frequencies from one of a first communication unit mounted in a vehicle and a second communication unit mounted in a mobile device carried by a user in such a manner that the plurality of signals are combined to generate a predetermined composite signal in an area located at a distance from the first communication unit, the distance being not more than a predetermined distance; and a permission device that permits a predetermined action of the vehicle when the predetermined composite signal generated in the area from the plurality of signals transmitted by the transmission device is detected and an authentication signal transmitted by the second communication unit is authenticated as an authorized authentication signal for the vehicle.
    Type: Grant
    Filed: January 21, 2015
    Date of Patent: March 31, 2020
    Assignees: DENSO CORPORATION, SOKEN, INC.
    Inventors: Munenori Matsumoto, Yuki Tokunaga
  • Patent number: 10601453
    Abstract: An electronic control unit coupled to a transmission line of a differential signal includes: a first suppression circuit suppressing a ringing effect and decreasing an impedance of the line for a first time interval when a level of the differential signal changes; a second suppression circuits suppressing a ringing effect and decreasing the impedance of the line for a second time interval when the level of the differential signal changes; and a switching unit isolating the second suppression circuit from the line when the operation power source energizes the electronic control unit, and connecting the second suppression circuit to the line when the operation power source does not energize the electronic control unit.
    Type: Grant
    Filed: April 24, 2019
    Date of Patent: March 24, 2020
    Assignees: SOKEN, INC., DENSO CORPORATION
    Inventors: Youhei Sekiya, Hiroyuki Mori, Tomohisa Kishigami
  • Patent number: 10539063
    Abstract: The cooling system is provided with an internal passage for circulating the cooling water inside an internal combustion engine, a water pump provided in an one end side external passage connected to the one end portion of the internal passage, and an ECU configured to execute a water flow switching control that switches a cooling water flow in the internal passage between a forward flow directed from the one end portion of the internal passage to the other end portion and a reverse flow directed from the other end portion to the one end portion.
    Type: Grant
    Filed: January 28, 2019
    Date of Patent: January 21, 2020
    Assignees: DENSO CORPORATION, SOKEN, INC.
    Inventors: Yuji Ito, Kentaro Yutani, Tomotaka Sugishita, Motomasa Iizuka, Takeo Matsumoto
  • Patent number: 10535483
    Abstract: In an electromagnetic relay device, a stationary core is coaxially arranged in an exciting coil, and constitutes a magnetic circuit. A yoke is arranged to surround an outer periphery of the exciting coil and the second end of the exciting coil to constitute the magnetic circuit. The yoke has an opening that is located to be closer to the first end of the exciting coil than to the second end of the exciting coil, and that faces the stationary core. A movable core is located to face the stationary core via the opening. The movable core is pulled to the stationary core upon the exciting coil being energized. A return spring is made of a magnetic member that is volutely wound in an axial direction of the stationary core. The return spring urges the movable core to be separated from the stationary core.
    Type: Grant
    Filed: February 26, 2018
    Date of Patent: January 14, 2020
    Assignees: SOKEN, INC., DENSO CORPORATION, ANDEN CO., LTD.
    Inventors: Yoshitaka Nishiguchi, Takahiro Soki, Hiroaki Murakami, Masanao Sugisawa
  • Patent number: 10534379
    Abstract: A pressure reducing valve includes a body, an annular valve seat, a valve element, and a pressing mechanism configured to press the valve element. The pressing mechanism includes a plug provided downstream of the valve seat and having a plug hole, and a pin including a sliding portion and an upstream end, the sliding portion having a shaft shape and being inserted in the plug hole such that a gap is provided between the sliding portion and an inner peripheral surface of the plug hole, and the upstream end being provided upstream of the sliding portion so as to contact the valve element. A fitting length of the sliding portion with respect to the plug hole and the gap between the sliding portion and the plug hole satisfy 0.0005 L<C<0.00908 L, where L indicates the fitting length, and C indicates the gap.
    Type: Grant
    Filed: August 23, 2018
    Date of Patent: January 14, 2020
    Assignees: JTEKT CORPORATION, TOYOTA TECHNICAL DEVELOPMENT CORPORATION, SOKEN, INC.
    Inventors: Kazuhisa Sugiyama, Koji Nishi, Akira Nakano, Yutaka Hotta, Akira Yamashita, Shota Yamamoto, Yasushi Mitsuishi