Patents by Inventor Masaki Chiba
Masaki Chiba 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).
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Publication number: 20200292221Abstract: A phase-change cooling system including: an evaporator holding a refrigerant liquid receiving heat from a heat generating source; a condenser releasing heat of a refrigerant vapor generated by vaporization of the refrigerant liquid at the evaporator and generating the refrigerant liquid; refrigerant liquid driving unit circulating the refrigerant liquid; a first piping unit for connecting the evaporator and the condenser; a second piping unit connecting the condenser and the refrigerant liquid driving unit; a third piping unit connecting the refrigerant liquid driving unit and the evaporator; and a fourth piping unit having one end connected to the first piping unit at a first connection point and another end connected to the second piping unit at a second connection point; a refrigerant storage unit storing the refrigerant liquid, the refrigerant storage unit being provided within a flow channel formed with the second piping unit.Type: ApplicationFiled: June 4, 2020Publication date: September 17, 2020Applicant: NEC CORPORATIONInventors: Hisato SAKUMA, Minoru YOSHIKAWA, Masaki CHIBA
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Publication number: 20200281091Abstract: When an enclosed space is formed, by at least one of surfaces forming an exterior shape of a shielding member and an intake or exhaust surface among surfaces forming an exterior shape of heat-generating housings, in such a way that a taken-in airflow and an exhausted airflow of the heat-generating housings installed in at least two rows can be separated or substantially separated, a cooling system includes: a duct formed to be able to separate or substantially separate a first airflow and a second airflow being intake/exhaust of a specific heat-generating housing among the heat-generating housings, and heat-generating housings other than the specific heat-generating housing, respectively; and a cooling enhancement unit enhancing cooling for the specific heat-generating housing by acting on the first airflow, thereby avoiding occurrence of a hot spot due to a high-heat-generating housing, in a system building an air-conditioning environment such as aisle capping.Type: ApplicationFiled: September 6, 2017Publication date: September 3, 2020Applicant: NEC CorporationInventors: Minoru YOSHIKAWA, Hisato SAKUMA, Yoshinori MIYAMOTO, Masaki CHIBA
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Patent number: 10625731Abstract: There is provided a vehicle behavior control device capable of improving responsivity of a vehicle behavior and a linear feeling with respect to a steering wheel operation without causing a driver to experience a strong feeling of intervention of the control, and capable of controlling behavior in such a manner as to improve stability of the vehicle attitude and riding comfort. The device includes a PCM which acquires a steering speed relating to a jerk in a width direction of the vehicle, sets a torque reduction flag, indicative of whether or not a condition for allowing reduction of an output torque of an engine is satisfied, based on the steering speed, and starts to reduce a torque when the torque reduction flag is set to True indicative of a state in which the condition for allowing reduction of the torque is satisfied.Type: GrantFiled: March 30, 2017Date of Patent: April 21, 2020Assignee: MAZDA MOTOR CORPORATIONInventors: Toru Yoshioka, Daisuke Umetsu, Osamu Sunahara, Yasunori Takahara, Masaki Chiba
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Publication number: 20200070811Abstract: There is provided a vehicle behavior control device capable of improving responsivity of a vehicle behavior and a linear feeling with respect to a steering wheel operation without causing a driver to experience a strong feeling of intervention of the control and, at the same time, capable of controlling behavior of a vehicle in such a manner as to also improve stability of the vehicle attitude and riding comfort. In a vehicle behavior control device applied to a vehicle 1 having steerable front road wheels 2, the vehicle behavior control device includes a PCM 14 which acquires a steering speed of the vehicle, and increases a pitch angle in such a direction that a front portion of the vehicle dips when the steering speed becomes equal to or greater than a given threshold TS1 which is greater than zero.Type: ApplicationFiled: March 30, 2017Publication date: March 5, 2020Applicant: MAZDA MOTOR CORPORATIONInventors: Toru YOSHIOKA, Daisuke UMETSU, Osamu SUNAHARA, Yasunori TAKAHARA, Masaki CHIBA
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Publication number: 20200070812Abstract: There is provided a vehicle behavior control device capable of improving responsivity of a vehicle behavior and a linear feeling with respect to a steering wheel operation without causing a driver to experience a strong feeling of intervention of the control and, at the same time, capable of controlling behavior of a vehicle in such a manner as to also improve stability of the vehicle attitude and riding comfort. In a vehicle behavior control device applied to a vehicle 1 having steerable front road wheels 2, the vehicle behavior control device includes a PCM 14 which acquires a steering speed of the vehicle, and increases a vertical load on the front road wheels when the steering speed becomes equal to or greater than a given threshold TS1 which is greater than zero.Type: ApplicationFiled: March 30, 2017Publication date: March 5, 2020Applicant: MAZDA MOTOR CORPORATIONInventors: Toru YOSHIOKA, Daisuke UMETSU, Osamu SUNAHARA, Yasunori TAKAHARA, Masaki CHIBA
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Publication number: 20200010949Abstract: In order to suppress a film from being formed in a gap between a mask and a substrate, a technology of improving adhesion between the mask and the substrate is provided. A film-forming method includes the step of suspending a mask MK by a suspension portion HU in a state in which the suspension portion HU is supported by a supporting portion SU and the step of bringing the mask MK suspended by the suspension portion HU into contact with a glass substrate GS in the state in which the suspension portion HU is supported by the supporting portion SU.Type: ApplicationFiled: October 31, 2017Publication date: January 9, 2020Inventors: Keisuke WASHIO, Masaki CHIBA, Masao NAKATA
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Publication number: 20190277572Abstract: A phase-change cooling apparatus according to an exemplary aspect of the present invention includes an evaporator a condenser; a refrigerant liquid driving means for circulating the refrigerant liquid; a first piping section configured to connect the evaporator and the condenser; a second piping section configured to connect the condenser to the refrigerant liquid driving means; a third piping section configured to connect the refrigerant liquid driving means to the evaporator; a refrigerant pooling means for pooling the refrigerant liquid, the refrigerant pooling means being located in a flow path constituted by the second piping section; and a fourth piping section, with one end of the fourth piping section connected to the first piping section at a first connecting point, and another end of the fourth piping section connected to the refrigerant pooling means at a second connecting point.Type: ApplicationFiled: September 15, 2017Publication date: September 12, 2019Applicant: NEC CorporationInventors: Arihiro MATSUNAGA, Minoru YOSHIKAWA, Masaki CHIBA, Hisato SAKUMA, Masanori SATO, Mizuki WADA, Koichi TODOROKI
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Publication number: 20190113287Abstract: Provided are a phase change cooler with enhanced cooling performance and enhanced pressure resistance performance, and an electronic device using such a phase change cooler. The phase change cooler includes a heat receiving unit, a heat dissipating unit, a vapor pipe and a liquid pipe that interconnect the heat receiving unit and the heat dissipating unit to form a loop, and refrigerant encapsulated inside the phase change cooler. The heat receiving unit has an approximately semicircular cross section, and the vapor pipe is coupled to an inclined face of the heat receiving unit.Type: ApplicationFiled: March 23, 2017Publication date: April 18, 2019Applicant: NEC CORPORATIONInventors: Mahiro HACHIYA, Masaki CHIBA
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Patent number: 10246084Abstract: A vehicle behavior control device comprises: a steer-by-wire type steering apparatus (6) having a steering wheel-side mechanism and a road wheel-side mechanism which are mechanically separated from each other; and a controller (8) performs a driving force reduction control when a steering speed in the steering apparatus (6) becomes equal to or greater than a given threshold. The steering apparatus (6) comprises a first steering angle sensor (14) provided in the steering wheel-side mechanism and a second steering angle sensor (19) provided in the road wheel-side mechanism. The controller (8) performs the driving force reduction control using the first steering angle sensor (14) when a yaw rate or a steering speed is equal to or greater than a given value, and performs the driving force reduction control using the second steering angle sensor (19) when the yaw rate or the steering speed is less than the given value.Type: GrantFiled: September 20, 2017Date of Patent: April 2, 2019Assignee: MAZDA MOTOR CORPORATIONInventors: Tomoji Izumi, Yasunori Takahara, Daisuke Umetsu, Osamu Sunahara, Masaki Chiba
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Patent number: 10246085Abstract: The vehicle behavior control device comprises: a steer-by-wire type steering apparatus (6) having a steering wheel-side mechanism and a road wheel-side mechanism which are mechanically separated from each other; and a controller (8) performs a driving force reduction control of reducing a driving force for a vehicle (1) when a steering speed in the steering apparatus (6) becomes equal to or greater than a given threshold. The steering apparatus (6) comprises a first steering angle sensor (14) provided in the steering wheel-side mechanism and a second steering angle sensor (19) provided in the road wheel-side mechanism. The controller (8) performs the driving force reduction control based on the steering speed in accordance with a sum of an output of the first steering angle sensor (14) and an output of the second steering angle sensor (19).Type: GrantFiled: September 20, 2017Date of Patent: April 2, 2019Assignee: MAZDA MOTOR CORPORATIONInventors: Tomoji Izumi, Yasunori Takahara, Daisuke Umetsu, Osamu Sunahara, Masaki Chiba
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Publication number: 20190086157Abstract: The cooling system according to the present invention comprises a heat-receiving section including an approximately constant cross-sectional area along a longitudinal direction. The longitudinal direction is a direction in which a length of the heat-receiving section is longest and a direction along an arrangement of the heat source in the cooling region. The cooling system also comprises a supply tube for supplying a refrigerant in a liquid state into the heat-receiving section, and a recovery tube for recovering the refrigerant, which is vaporized upon reception of heat, from an inside of the heat-receiving section. The cooling system further comprises a heat radiation section for cooling the recovered refrigerant and supplying the refrigerant in a liquid state to the supply tube. The heat-receiving section comprises a refrigerant pathway which causes the refrigerant supplied from the supply tube to flow out into the heat-receiving section along the longitudinal direction.Type: ApplicationFiled: February 27, 2017Publication date: March 21, 2019Applicant: NEC CORPORATIONInventors: Masaki CHIBA, Mahiro HACHIYA
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Publication number: 20190084552Abstract: There is provided a vehicle behavior control device capable of improving responsivity of a vehicle behavior and a linear feeling with respect to a steering wheel operation without causing a driver to experience a strong feeling of intervention of the control and, at the same time, capable of controlling behavior of a vehicle in such a manner as to also improve stability of the vehicle attitude and riding comfort. In a vehicle behavior control device applied to a vehicle having steerable front road wheels, the vehicle behavior control device includes a PCM which acquires a steering speed of the vehicle, and generates a deceleration jerk which is a rearward jerk in a longitudinal direction of the vehicle when the steering speed becomes equal to or greater than a given threshold TS1 which is greater than zero.Type: ApplicationFiled: March 30, 2017Publication date: March 21, 2019Applicant: MAZDA MOTOR CORPORATIONInventors: Toru YOSHIOKA, Daisuke UMETSU, Osamu SUNAHARA, Yasunori TAKAHARA, Masaki CHIBA
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Patent number: 10220837Abstract: A vehicle behavior control device for controlling a vehicle equipped with a steering apparatus comprises: a PCM operable to acquire a steering speed in the steering apparatus, and, when the steering speed becomes equal to or greater than a given threshold (TS1) which is greater than 0, to reduce a driving force for the vehicle according to the steering speed, wherein the steering apparatus comprises a steering shaft coupled to the steering wheel and rotatable together with the steering wheel, wherein the steering shaft has a torsion bar whose torsional rigidity about a rotational axis of the steering shaft is less than a remaining portion of the steering shaft. The steering speed acquisition section is configured to acquire the steering speed of the steering apparatus at a position on the side of the front road wheels with respect to the low rigidity portion.Type: GrantFiled: June 27, 2017Date of Patent: March 5, 2019Assignee: MAZDA MOTOR CORPORATIONInventors: Yasunori Takahara, Tomoji Izumi, Daisuke Umetsu, Osamu Sunahara, Masaki Chiba
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Publication number: 20190061739Abstract: There is provided a vehicle behavior control device capable of improving responsivity of a vehicle behavior and a linear feeling with respect to a steering wheel operation without causing a driver to experience a strong feeling of intervention of the control, and capable of controlling behavior in such a manner as to improve stability of the vehicle attitude and riding comfort. The device includes a PCM which acquires a steering speed relating to a jerk in a width direction of the vehicle, sets a torque reduction flag, indicative of whether or not a condition for allowing reduction of an output torque of an engine is satisfied, based on the steering speed, and starts to reduce a torque when the torque reduction flag is set to True indicative of a state in which the condition for allowing reduction of the torque is satisfied.Type: ApplicationFiled: March 30, 2017Publication date: February 28, 2019Applicant: MAZDA MOTOR CORPORATIONInventors: Toru YOSHIOKA, Daisuke UMETSU, Osamu SUNAHARA, Yasunori TAKAHARA, Masaki CHIBA
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Patent number: 10215456Abstract: In order to supply a refrigerant to multiple-stage heat receivers equally while saving space, a refrigerant distribution device to distribute a refrigerant supplied from the upper stream according to the present invention includes a main body including a side wall part, an upper face part and a bottom face part, an upstream pipe provided on the upper face part in a manner communicating with an inside of the main body, a downstream pipe provided in a state partially inserted inside the main body via an under face hole part provided in the bottom face part, a tributary pipe provided in the side wall part or the bottom face part in a manner communicating with the inside of the main body, and a refrigerant direction changing means provided between the upstream pipe and the downstream pipe.Type: GrantFiled: December 5, 2014Date of Patent: February 26, 2019Assignees: NEC Corporation, NEC Platforms, Ltd.Inventors: Arihiro Matsunaga, Masaki Chiba, Minoru Yoshikawa, Tadao Hosaka, Shunsuke Fujii, Akira Shoujiguchi, Kenichi Inaba, Masanori Sato
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Publication number: 20190048463Abstract: A plasma atomic layer deposition apparatus includes: a source gas supply port functioning also as a cleaning gas supply port provided on a first side wall of a film-forming container; and a source gas exhaust port functioning also as a cleaning gas exhaust port provided on a second side wall opposed to the first side wall of the film-forming container.Type: ApplicationFiled: August 4, 2018Publication date: February 14, 2019Inventors: Masamitsu TORAMARU, Keisuke WASHIO, Masaki CHIBA, Masao NAKATA
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Patent number: 10182517Abstract: A vapor pipe 103 connects a heat dissipation portion 200 and each of a plurality of heat receiving portions 102. A liquid pipe 104 connects the heat dissipation portion 200 and each of a plurality of the heat receiving portions 102. A bypass pipe 105 connects the vapor pipe 103 and the liquid pipe 104. A valve 106 opens and closes a flow path of the bypass pipe 105. A first connection portion 107 connects the vapor pipe 103 and the bypass pipe 105. A second connection portion 108 connects the liquid pipe 103 and the bypass pipe 105. The first connection portion 107 is disposed at a position higher than that of the second connection portion 108. As a result, refrigerant can be efficiently transported in a short time.Type: GrantFiled: November 14, 2014Date of Patent: January 15, 2019Assignee: NEC CorporationInventors: Minoru Yoshikawa, Kenichi Inaba, Masanori Sato, Akira Shoujiguchi, Arihiro Matsunaga, Masaki Chiba
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Publication number: 20190003776Abstract: It is impossible, in a phase-change cooling apparatus in which a refrigerant flows in a gas-liquid two-phase state, to enhance cooling capacity sufficiently even though a heat-radiating region is enlarged; therefore, a heat radiation apparatus according to an exemplary aspect of the present invention includes gas-phase refrigerant diffusion means into which a refrigerant in a gas-liquid two-phase state flowing, the gas-phase refrigerant diffusion means being filled with a gas-phase refrigerant included in the refrigerant in the gas-liquid two-phase state; heat-radiating means including a first header, a second header, and a plurality of heat-radiating pipes connecting the first header to the second header, the gas-phase refrigerant flowing through the plurality of heat-radiating pipes; and gas-phase-side connection means for connecting the gas-phase refrigerant diffusion means to the first header, the gas-phase refrigerant flowing in the gas-phase-side connection means.Type: ApplicationFiled: December 19, 2016Publication date: January 3, 2019Applicant: NEC CorporationInventors: Arihiro MATSUNAGA, Masaki CHIBA, Masanori SATO, Koichi TODOROKI, Mizuki WADA, Minoru YOSHIKAWA
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Publication number: 20180363968Abstract: In a phase-change cooling apparatus including an indoor unit and an outdoor unit, a configuration to prevent dew condensation in the indoor unit causes the cooling performance to decrease; therefore, a refrigerant circulating apparatus according to an exemplary aspect of the present invention includes refrigerant-liquid thermal equilibrium means for mixing a first refrigerant liquid with a second refrigerant liquid and sending a reflux refrigerant liquid composed of the first refrigerant liquid and the second refrigerant liquid, the first refrigerant liquid being a liquid-phase refrigerant included in a gas-liquid two-phase refrigerant flowing in from heat receiving means, the second refrigerant liquid arising due to the gas-liquid two-phase refrigerant cooled by heat radiating means; a refrigerant passage configured for the gas-liquid two-phase refrigerant and the reflux refrigerant liquid to circulate between the heat receiving means and the refrigerant-liquid thermal equilibrium means; refrigerant-liquid rType: ApplicationFiled: December 16, 2016Publication date: December 20, 2018Applicant: NEC CorporationInventors: Minoru YOSHIKAWA, Hisato SAKUMA, Masaki CHIBA
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Patent number: 10155535Abstract: The present application discloses a control apparatus for electric power steering, including: a gain determination portion configured to determine a first assist gain in correspondence to a steering torque acting on a steering shaft when a driver rotates a steering wheel; and a gain adjuster which adjusts the first assist gain in response to a change in a rotation direction of the steering wheel to generate a second assist gain. The gain adjuster generates the second assist gain so as to reduce a difference between a first torque, which is required of the driver rotating the steering wheel to a predetermined rotation position, and a second torque, which is required of the driver holding the steering wheel at the rotation position.Type: GrantFiled: April 25, 2017Date of Patent: December 18, 2018Assignee: MAZDA MOTOR CORPORATIONInventor: Masaki Chiba