Patents by Inventor Masahiro Kuroda
Masahiro Kuroda 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: 20170362796Abstract: A work machine includes a machine body, an engine, a rotary electrical device, and a battery. The engine is provided on the machine body to move the machine body. The rotary electrical device is provided on the machine body to move the machine body and to generate electric power. The battery is to be charged by the rotary electrical device and to discharge electric power to the rotary electrical device to move the machine body. The battery being is provided adjacent to the engine.Type: ApplicationFiled: June 15, 2017Publication date: December 21, 2017Applicant: Kubota CorporationInventors: Hiroaki NAKAGAWA, Masahiro KURODA, Masahiko NOMURA, Shinichi KAWABATA, Yuki SHIMOIKE, Shizuo DEMIZU, Yoshihiro TAKAYAMA
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Patent number: 9828744Abstract: A working machine includes a travel device, a motive power transmission device configured to transmit a motive power to the travel device, a transmission case configured to house the motive power transmission device, and a hydraulic operation fluid tank disposed on an upper surface of the transmission case.Type: GrantFiled: September 13, 2016Date of Patent: November 28, 2017Assignee: KUBOTA CORPORATIONInventors: Ryohei Sumiyoshi, Hideo Imai, Noriyoshi Kubo, Hiroyuki Anami, Hiroyuki Hata, Toyoaki Yasuda, Masahiro Kuroda, Kohei Higashiyama, Yuji Yamashita, Satoshi Tajima, Shunichiro Mori, Hayato Ido, Toshihiko Takemura, Shinsuke Hisatake, Hajime Tamaki, Hiroshi Koyamatsu
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Patent number: 9624646Abstract: A working machine includes: a first switch operable to set an operation amount; a second switch operable by being pressed; a control unit capable of detecting an operation of the first switch and an operation of the second switch, the control unit outputting a control signal based on the operation amount of the first switch and continuously outputting the control signal when the operation of the first switch is detected after detecting a release of the operation of the second switch under a state where the operation of the second switch is detected; an actuator configured to be activated by a hydraulic operation fluid; a solenoid valve capable of controlling, based on the control signal, a pilot pressure; and a control valve configured to supply, based on the pilot pressure, the hydraulic operation fluid to the actuator.Type: GrantFiled: September 18, 2014Date of Patent: April 18, 2017Assignee: KUBOTA CORPORATIONInventors: Masahiro Kuroda, Ryosuke Kinugawa, Naohiro Saijo
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Patent number: 9617706Abstract: Working machine that includes a machine frame, an operator seat, and a boom disposed on each side of the operator seat. The boom includes a boom base portion disposed on a position corresponding to a rear portion of the machine frame. A boom tip end portion is disposed opposite to the boom base portion. A boom intermediate portion is disposed between the boom base portion and the boom tip end portion. A boom cylinder is connected to the boom base portion at one end and to the machine frame at the other end. The boom cylinder is configured to swing the boom upward and downward. A hose insertion hole is disposed in the boom base portion and is opened backward or downward. A hydraulic hose is inserted into the hose insertion hold and is internally disposed in an inside of the boom intermediate portion.Type: GrantFiled: September 18, 2014Date of Patent: April 11, 2017Assignee: KUBOTA CORPORATIONInventors: Toshihiko Takemura, Masahiro Kuroda, Kenichi Ogura, Hayato Ido, Shigeki Morishita
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Publication number: 20170090506Abstract: A cable wiring structure includes a cable, a first holder, and a second holder. The cable connects a first appliance mounted in a work machine and a second appliance mounted in the work machine to transmit an electric signal. The cable includes a first held part and a second held part different from the first held part. The first holder holds the cable at the first held part. The second holds the cable at the second held part. A first range in which the cable bends at the first held part is smaller than a second range in which the cable bends at the second held part.Type: ApplicationFiled: September 29, 2016Publication date: March 30, 2017Applicant: Kubota CorporationInventors: Masahiro KURODA, Keisuke MIURA, Hiroaki NAKAGAWA, Hayato KAWANO, Hiroyuki ANAMI
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Patent number: 9567729Abstract: The present invention intends to allow a good layout of and an easy maintenance of parts disposed around a rear portion of the motor. A working machine includes a machine body; a motor mounted on the machine body; an output shaft protruding from a rear portion of the motor; a rear attachment portion disposed on the rear portion of the motor, the rear attachment portion facing backward; and a mount member configured to support the motor to suppress vibration of the motor, the mount member including: a first support member having an opposite attachment portion, the opposite attachment portion being attached opposite to the rear attachment portion; an elastic member attached to the first support member; and a second support member disposed on the machine body, the second support member being configured to support the elastic member.Type: GrantFiled: September 23, 2015Date of Patent: February 14, 2017Assignee: KUBOTA CORPORATIONInventors: Ryohei Sumiyoshi, Hideo Imai, Noriyoshi Kubo, Hiroyuki Anami, Hiroyuki Hata, Toyoaki Yasuda, Masahiro Kuroda, Kohei Higashiyama, Yuji Yamashita, Satoshi Tajima, Shunichiro Mori, Hayato Ido, Toshihiko Takemura, Shinsuke Hisatake, Hajime Tamaki, Hiroshi Koyamatsu
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Publication number: 20170029007Abstract: A displacement switch includes a first wall, a second wall, a third wall, a fourth wall, a support member, and a base. The first wall is disposed on a first side in a width direction and includes a first standing portion. The second wall is disposed on a second side opposite to the first side in the width direction and includes a second standing portion. The third wall connects the first standing portion and the second standing portion. The fourth wall includes an operation surface and connects the first wall, the second wall and the third wall. The support member is swingably disposed on at least one of the first wall, the second wall, the third wall and the fourth wall. The base overlaps the third wall viewed in a first direction perpendicular to the third wall. The base includes an insertion inlet into which the support member is inserted.Type: ApplicationFiled: June 16, 2016Publication date: February 2, 2017Applicant: KUBOTA CORPORATIONInventors: Hiroaki NAKAGAWA, Masahiro KURODA, Keisuke MIURA, Ikuhiro UOTANI, Satoshi TAJIMA, Hiroyuki ANAMI, Hayato KAWANO
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Publication number: 20160375845Abstract: A working machine includes a travel device, a motive power transmission device configured to transmit a motive power to the travel device, a transmission case configured to house the motive power transmission device, and a hydraulic operation fluid tank disposed on an upper surface of the transmission case.Type: ApplicationFiled: September 13, 2016Publication date: December 29, 2016Applicant: KUBOTA CORPORATIONInventors: Ryohei SUMIYOSHI, Hideo IMAI, Noriyoshi KUBO, Hiroyuki ANAMI, Hiroyuki HATA, Toyoaki YASUDA, Masahiro KURODA, Kohei HIGASHIYAMA, Yuji YAMASHITA, Satoshi TAJIMA, Shunichiro MORI, Hayato IDO, Toshihiko TAKEMURA, Shinsuke HISATAKE, Hajime TAMAKI, Hiroshi KOYAMATSU
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Publication number: 20160265708Abstract: A leak check device is for a seal structure of a junction between a first component and a second component. The seal structure is configured such that a fluid passage is defined inside the first and second components connected together, a seal member is attached to the first component, and the seal member prevents leakage of a fluid through the junction. The leak check device includes a test plug configured such that (a) the test plug includes an attachment portion to which the seal member is attached, (b) the attachment portion is connected to the second component separated from the first component, (c) a closed space is defined by an inner peripheral surface of the second component, an outer peripheral surface of the seal member, and an outer peripheral surface of the attachment portion, and (d) the test plug includes an introduction portion through which a test fluid is introduced into the closed space.Type: ApplicationFiled: March 7, 2016Publication date: September 15, 2016Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Keisuke Minai, Koji Nagata, Masaharu Ichise, Masahiro Kuroda, Shigeru Shibanuma
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Publication number: 20160090713Abstract: A cabin includes: a panel disposed on a side of an operator seat, the panel including: a plurality of cross members extending in a first direction; and a plurality of transverse members intersecting with the plurality of cross members each other and extending in a second direction; a glass panel disposed on a side of the panel; a window frame disposed on the glass panel; a window panel disposed on the window frame, the window panel being configured to move in the first direction or in the second direction; a projecting member disposed on a side of the window panel, the side being an identical side to the operator seat, the projecting member being configured to move together with the window panel; and a guide portion configured to accept insertion of the projecting member and to limit a moving distance of the window panel.Type: ApplicationFiled: September 23, 2015Publication date: March 31, 2016Applicant: KUBOTA CORPORATIONInventors: Yuji YAMASHITA, Hiroaki KURACHI, Masahiro KURODA, Hiroyuki ANAMI, Toshihiko TAKEMURA, Satoshi TAJIMA, Kunihiro SUZUKI, Hayato KAWANO, Hideo IMAI
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Publication number: 20160090711Abstract: The present invention intends to allow a good layout of and an easy maintenance of parts disposed around a rear portion of the motor. A working machine includes a machine body; a motor mounted on the machine body; an output shaft protruding from a rear portion of the motor; a rear attachment portion disposed on the rear portion of the motor, the rear attachment portion facing backward; and a mount member configured to support the motor to suppress vibration of the motor, the mount member including: a first support member having an opposite attachment portion, the opposite attachment portion being attached opposite to the rear attachment portion; an elastic member attached to the first support member; and a second support member disposed on the machine body, the second support member being configured to support the elastic member.Type: ApplicationFiled: September 23, 2015Publication date: March 31, 2016Applicant: KUBOTA CORPORATIONInventors: Ryohei SUMIYOSHI, Hideo IMAI, Noriyoshi KUBO, Hiroyuki ANAMI, Hiroyuki HATA, Toyoaki YASUDA, Masahiro KURODA, Kohei HIGASHIYAMA, Yuji YAMASHITA, Satoshi TAJIMA, Shunichiro MORI, Hayato IDO, Toshihiko TAKEMURA, Shinsuke HISATAKE, Hajime TAMAKI, Hiroshi KOYAMATSU
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Patent number: 9282574Abstract: In particular, even if sensors have their respective different timer precisions, the number of occasions when the sensors wait for data can be minimized, thereby reducing the output consumptions on the sensor sides. A coordinator (3) allocates, based on information previously received from sensors (2), the sensors to respective slots, which constitute a super-frame, in a time sequence order and then notifies, to the sensors (2), the respective slots to which the sensors are allocated. When each of the sensors (2) transmits data to the coordinator (3), the sensor makes a synchronization request at the timing of the notified slot without receiving any beacons from the coordinator.Type: GrantFiled: August 23, 2010Date of Patent: March 8, 2016Assignee: NATIONAL INSTITUTE OF INFORMATION AND COMMUNICATIONS TECHNOLOGYInventor: Masahiro Kuroda
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Publication number: 20150132094Abstract: A working machine includes: a first switch operable to set an operation amount; a second switch operable by being pressed; a control unit capable of detecting an operation of the first switch and an operation of the second switch, the control unit outputting a control signal based on the operation amount of the first switch and continuously outputting the control signal when the operation of the first switch is detected after detecting a release of the operation of the second switch under a state where the operation of the second switch is detected; an actuator configured to be activated by a hydraulic operation fluid; a solenoid valve capable of controlling, based on the control signal, a pilot pressure; and a control valve configured to supply, based on the pilot pressure, the hydraulic operation fluid to the actuator.Type: ApplicationFiled: September 18, 2014Publication date: May 14, 2015Applicant: KUBOTA CORPORATIONInventors: Masahiro KURODA, Ryosuke KINUGAWA, Naohiro SAIJO
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Publication number: 20150132095Abstract: A working machine includes: a machine frame; an operator seat provided on the machine frame; a boom arranged on each side of the operator seat; a boom base portion being a part of the boom, the boom base portion being provided to a position corresponding to a rear portion side of the machine frame and being pivotally supported to enable the boom to swing upward and downward; a hose insertion hole provided in the boom base portion, the hose insertion hole being opened upward and downward; and a hydraulic hose internally installed into an inside of the boom through the hose insertion hole, the hydraulic hose being used for passage of a hydraulic operation fluid.Type: ApplicationFiled: September 18, 2014Publication date: May 14, 2015Applicant: KUBOTA CORPORATIONInventors: Toshihiko TAKEMURA, Masahiro KURODA, Kenichi OGURA, Hayato IDO, Shigeki MORISHITA
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Patent number: 8593092Abstract: A control system controls a multiphase rotating machine by a 120° energization process and a PWM process. In the 120° energization process, respective ones of switching elements of a high side arm and switching elements of a low side arm of a power conversion circuit are turned on. In the PWM process, the switching elements of the power conversion circuit turn on/off so that two phases that are connected to the switching elements that are in the on-state are alternately rendered conductive to the high potential side input terminal and the low potential side input terminal of the power conversion circuit.Type: GrantFiled: February 6, 2013Date of Patent: November 26, 2013Assignee: DENSO CORPORATIONInventors: Masahiro Kuroda, Nobumasa Ueda, Kiyoshi Nagata, Masaya Ootake, Sadahiro Akama
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Patent number: 8433740Abstract: An M-sequence generator includes EXCLUSIVE-OR gates feeding back pieces of bit data from m number of series registers to the registers in response to a clock. A period of a cyclic group {(?1k), (?2k), (?3k), . . . } falls within a maximum period (2m?1), the group being produced as an element (?k) obtained by raising a root ? of a polynomial to a specified power value k (k?2), which have the terms in polynomials of a Galois field GF(2m). In a multiplying unit including the gates, pieces of bit data is fed into one end of the multiplying unit in response to the clock while the element (?k) is fed into the other end. The multiplying unit performs Galois field multiplication between each piece of bit data and the element (?k), the gate supplies the multiplication result as feedback bit data to the respective registers.Type: GrantFiled: April 28, 2010Date of Patent: April 30, 2013Assignee: Anritsu CorporationInventors: Takashi Furuya, Masahiro Kuroda, Kazuhiko Ishibe
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Patent number: 8395338Abstract: A control system controls a multiphase rotating machine by a 120° energization process and a PWM process. In the 120° energization process, respective ones of switching elements of a high side arm and switching elements of a low side arm of a power conversion circuit are turned on. In the PWM process, the switching elements of the power conversion circuit turn on/off so that two phases that are connected to the switching elements that are in the on-state are alternately rendered conductive to the high potential side input terminal and the low potential side input terminal of the power conversion circuit.Type: GrantFiled: December 16, 2008Date of Patent: March 12, 2013Assignee: DENSO CORPORATIONInventors: Masahiro Kuroda, Hiroshi Taki, Nobumasa Ueda
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Publication number: 20120244807Abstract: In particular, even if sensors have their respective different timer precisions, the number of occasions when the sensors wait for data can be minimized, thereby reducing the output consumptions on the sensor sides. A coordinator (3) allocates, based on information previously received from sensors (2), the sensors to respective slots, which constitute a super-frame, in a time sequence order and then notifies, to the sensors (2), the respective slots to which the sensors are allocated. When each of the sensors (2) transmits data to the coordinator (3), the sensor makes a synchronization request at the timing of the notified slot without receiving any beacons from the coordinator.Type: ApplicationFiled: August 23, 2010Publication date: September 27, 2012Inventor: Masahiro Kuroda
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Patent number: 8249258Abstract: A decentralized key management scheme that implements key management of a tree structure comprised of only group members without using a key management server is proposed, and communication method and system that can contribute to secure group communications is provided. Each member constituting a group updates tree structure data of the entire group when a new member joins, respectively 70, and selects a captain in each subtree 71. Rather than the key management server, the captain generates a new key and shares it with other captains or the joining member 72, and distributes the new key to the members of the subtree 73, thereby enabling all the group members to update to the new key. A captain is also selected when a member leaves, and sharing and distribution of a new key by the captain is performed.Type: GrantFiled: December 8, 2004Date of Patent: August 21, 2012Assignee: National Institute of Information and Communications TechnologyInventors: Daisuke Inoue, Masahiro Kuroda
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Patent number: 8217603Abstract: A motor driving apparatus has a loss-of-synchronism monitoring circuit that monitors the rotation of a rotary machine such as a brushless DC motor to detect a sign of transition to a state of loss of synchronism. When the sign is detected, an energization control circuit temporarily stops driving of the rotary machine to bring it into a free running state, and thereafter carries out control so as to resume driving of the rotary machine. Further, the motor driving apparatus has an inverter and a drive control circuit that controls switching operation of the inverter based on rotation of the rotary machine.Type: GrantFiled: November 24, 2010Date of Patent: July 10, 2012Assignee: DENSO CORPORATIONInventors: Sadahiro Akama, Shuji Agatsuma, Nobumasa Ueda, Masahiro Kuroda, Kiyoshi Nagata, Masaya Ootake