Patents by Inventor Yoshiaki Kotani

Yoshiaki Kotani 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).

  • Publication number: 20210085143
    Abstract: A work system comprising a first autonomous work machine and a second autonomous work machine, wherein the first autonomous work machine includes: a detection unit configured to detect dirt on the second autonomous work machine; and a notification unit configured to, if the detection unit detects dirt, notify the second autonomous work machine of dirt information indicating the detection of the dirt, and the second autonomous work machine removes the dirt or waits in a predetermined position in response to the notification of the dirt information by the notification unit.
    Type: Application
    Filed: September 4, 2020
    Publication date: March 25, 2021
    Inventors: Hiroto TAKAHASHI, Yoshiaki KOTANI, Naoki KAMEYAMA, Hiroya TAKAHASHI
  • Publication number: 20210064045
    Abstract: An autonomous snow removing machine includes: traveling apparatuses; a snow removal work unit; a region setting unit that sets a snow removal work region in which snow removal is performed by the snow removal work unit; and a control unit that controls the traveling apparatuses such that the traveling apparatuses do not deviate from the snow removal work region set by the region setting unit. As a result, the snow removal work can be performed while causing the autonomous snow removing machine to autonomously travel by controlling the traveling apparatuses in the snow removal work region set by the region setting unit.
    Type: Application
    Filed: August 26, 2020
    Publication date: March 4, 2021
    Inventors: Makoto Yamamura, Takamasa Udagawa, Yoshiaki Kotani, Hiroya Takahashi
  • Publication number: 20210066933
    Abstract: A wireless power supply system includes a mower that executes a mowing work while traveling autonomously, and a charging station that supplies power to the mower. The charging station includes a power supply coil, and the mower includes a power reception coil, a first detector that detects a magnetic field generated by the power supply coil, and a first traveling controller that causes the mower to travel toward the charging station, based on a detection result of the first detector.
    Type: Application
    Filed: August 26, 2020
    Publication date: March 4, 2021
    Inventors: Hiroya Takahashi, Takumi Shiiyama, Yoshiaki Kotani
  • Publication number: 20210061109
    Abstract: The invention includes a memory unit that stores electrical characteristics of a power receiving coil of an electric lawnmower and a power transfer coil of an external charger, wherein a battery side control circuit performs a test power transfer from a power transferring/receiving coil to the power receiving coil or the power transfer coil to obtain electrical characteristics of a power receiving side, compares the electrical characteristics to the electrical characteristics stored in the memory unit to determine whether the electrical characteristics are of a power transfer to the power receiving coil or of a power transfer to the power transfer coil, and performs control to switch to a power transfer mode with respect to the power receiving coil or to a power receiving mode with respect to the power transfer coil.
    Type: Application
    Filed: August 24, 2020
    Publication date: March 4, 2021
    Inventors: Hiroya Takahashi, Yoshiaki Kotani, Takumi Shiiyama
  • Publication number: 20210008602
    Abstract: A mower executes a mowing work while traveling autonomously. Furthermore, the mower includes a mower main body and a first controller that controls an operation of the mower main body so that the mower main body is washed with tap water that is supplied from a washing station. The mower includes, for example, a work unit that executes the mowing work, and the first controller operates the work unit so that the mower main body is washed.
    Type: Application
    Filed: July 7, 2020
    Publication date: January 14, 2021
    Inventors: Hiroya Takahashi, Yoshiaki Kotani, Hiroto Takahashi, Naoki Kameyama
  • Publication number: 20210008603
    Abstract: A cleaning system includes a mower that executes a mowing work while traveling autonomously, and a cleaning station that cleans the mower. The cleaning system includes: an acquirer that acquires dirt information relating to a state of dirt of the mower; a determiner that determines at least one of a necessity of cleaning the mower and a method of cleaning the mower, based on the dirt information; and a first cleaning executor that executes a cleaning operation, according to a determination result of the determiner.
    Type: Application
    Filed: July 7, 2020
    Publication date: January 14, 2021
    Inventors: Hiroya Takahashi, Yoshiaki Kotani, Hiroto Takahashi, Naoki Kameyama
  • Publication number: 20200395786
    Abstract: An autonomous running working machine that receives power wirelessly fed from a station includes a power reception coil that is provided in the station and is magnetically coupled to a power transmission coil, in which a core of a magnetic substance is inserted, and the power reception coil includes an open portion through which the core passes when the autonomous running working machine enters the station.
    Type: Application
    Filed: May 14, 2020
    Publication date: December 17, 2020
    Inventors: Hiroya Takahashi, Yoshiaki Kotani, Takumi Shiiyama
  • Patent number: 7750503
    Abstract: A first primary winding N11 of a transformer 1 is connected with a commercial power source 30 via a transistor Q1, and a second primary winding N22 of the transformer 1 is connected with a backup battery 31 via a transistor Q2. An electric power on the second primary winding N12 is output for a controlling apparatus. When a voltage of the commercial power source 30 is larger than a predetermined value, a backup stopping circuit 10 turns off a LED 9 and stops the transistor Q2. The second primary winding N22 is connected with input terminals 14, 15 as a power source for charging a battery 31. While the transistor Q2 is stopped, an electric power for the battery is output from the second primary winding N22. Since the LED 9 turns on at the time of electric power breakdown, the electric power for the battery is stopped.
    Type: Grant
    Filed: March 9, 2006
    Date of Patent: July 6, 2010
    Assignee: Honda Motor Co., Ltd.
    Inventors: Yoshiaki Kotani, Motohiro Shimizu
  • Publication number: 20090058188
    Abstract: A first primary winding N11 of a transformer 1 is connected with a commercial power source 30 via a transistor Q1, and a second primary winding N22 of the transformer 1 is connected with a backup battery 31 via a transistor Q2. An electric power on the second primary winding N12 is output for a controlling apparatus. When a voltage of the commercial power source 30 is larger than a predetermined value, a backup stopping circuit 10 turns off a LED 9 and stops the transistor Q2. The second primary winding N22 is connected with input terminals 14, 15 as a power source for charging a battery 31. While the transistor Q2 is stopped, an electric power for the battery is output from the second primary winding N22. Since the LED 9 turns on at the time of electric power breakdown, the electric power for the battery is stopped.
    Type: Application
    Filed: March 9, 2006
    Publication date: March 5, 2009
    Applicant: HONDA MOTOR CO., LTD.,
    Inventors: Yoshiaki Kotani, Motohiro Shimizu
  • Patent number: 6744239
    Abstract: A fault on the generator can be detected with the use of a simple arrangement. The output of the generator 12 which has multi-phase winding and is driven by an engine 11 is rectified and then converted by an inverter 133 into an alternating current at the frequency of a system before interconnected to the source of the system. After the engine 11 is started, the direct current voltage Vdc is monitored with a first fault monitor 40. When the direct current voltage Vdc rises up to a predetermined level, a connector relay 135 is closed. As the output of the inverter 133 is increased, the interconnection with the system source is enabled. After the interconnection, the direct current voltage and the output of the inverter are monitored with a second fault monitor 43. If the direct current voltage drops down to below the predetermined level before the output of the inverter reaches a rated level, the canceling and re-interconnection is repeated.
    Type: Grant
    Filed: August 27, 2001
    Date of Patent: June 1, 2004
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Tomoki Fukushima, Yoshiaki Kotani, Takao Tamechika, Kenji Kamimura
  • Patent number: 6717387
    Abstract: A generator apparatus such as in a cogeneration system has a controlling power supply energized with its generator output with giving no adverse effect on the waveform of its output. An inverter 13 is provided for converting an alternating current output of the engine generator 10 into a direct current and returning back by the action of its inverter circuit 133 to an alternating current of a predetermined frequency which is then connected to a power supply system 14. While the engine 11 remains not actuated, a power received from a joint between the inverter 13 and the power supply system 14 is rectified by a rectifier 141 and transferred to the controlling power supply 140. When the engine 11 is started, the power at the input of the inverter circuit 133 is transmitted to the controlling power supply 140.
    Type: Grant
    Filed: September 6, 2001
    Date of Patent: April 6, 2004
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Yoshiaki Kotani, Tomoki Fukushima, Tsutomu Wakitani
  • Patent number: 6630816
    Abstract: A grid-type engine generator apparatus which can prevent reduction in the operational efficiency due to the stop motion of an engine at the cancellation of the interconnection and minimize loads exerted on the startup device for the engine. A network protector is provided for generating a fault signal when detecting a fault on the network source. Upon receiving the fault signal, an interconnection relay is opened to cancel the interconnection and simultaneously, a timer is started. The cancellation permits the engine to run with no load. When the fault signal is maintained until the setting duration of the timer is timed up, a time-out signal is released to stop the engine. On the other hand, when the fault signal is eliminated by canceling the cause of the fault before the setting duration of the timer is passed, the interconnection relay is closed to establish the interconnection again and the timer is reset.
    Type: Grant
    Filed: August 27, 2001
    Date of Patent: October 7, 2003
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Yoshiaki Kotani, Tomoki Fukushima, Kenji Kamimura
  • Publication number: 20020036483
    Abstract: A generator apparatus such as in a cogeneration system has a controlling power supply energized with its generator output with giving no adverse effect on the waveform of its output. An inverter 13 is provided for converting an alternating current output of the engine generator 10 into a direct current and returning back by the action of its inverter circuit 133 to an alternating current of a predetermined frequency which is then connected to a power supply system 14. While the engine 11 remains not actuated, a power received from a joint between the inverter 13 and the power supply system 14 is rectified by a rectifier 141 and transferred to the controlling power supply 140. When the engine 11 is started, the power at the input of the inverter circuit 133 is transmitted to the controlling power supply 140.
    Type: Application
    Filed: September 6, 2001
    Publication date: March 28, 2002
    Applicant: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Yoshiaki Kotani, Tomoki Fukushima, Tsutomu Wakitani
  • Publication number: 20020024325
    Abstract: This can prevent declination in the operational efficiency due to the stop motion of an engine at the cancellation of the interconnection and minimize loads exerted on the startup device for the engine. A system protector 138 is provided for generating a fault signal when detecting a fault on the system source. Upon receiving the fault signal, an interconnection relay 135 is opened to cancel the interconnection and simultaneously, a timer 39 is started. The cancellation permits the engine 11 to run with no load. When the fault signal is maintained until the setting duration of the timer 39 is timed up, a time-out signal is released to stop the engine 11. On the other hand, when the fault signal is eliminated by canceling the cause of the fault before the setting duration of the timer 39 is passed, the interconnection relay 135 is closed to establish the interconnection again and the timer 39 is reset.
    Type: Application
    Filed: August 27, 2001
    Publication date: February 28, 2002
    Applicant: HONDA GIKEN KOGYO KABUSHIKI KAISHA
    Inventors: Yoshiaki Kotani, Tomoki Fukushima, Kenji Kamimura
  • Publication number: 20020024323
    Abstract: A fault on the generator can be detected with the use of a simple arrangement. The output of the generator 12 which has multi-phase winding and is driven by an engine 11 is rectified and then converted by an inverter 133 into an alternating current at the frequency of a system before interconnected to the source of the system. After the engine 11 is started, the direct current voltage Vdc is monitored with a first fault monitor 40. When the direct current voltage Vdc rises up to a predetermined level, a connector relay 135 is closed. As the output of the inverter 133 is increased, the interconnection with the system source is enabled. After the interconnection, the direct current voltage and the output of the inverter are monitored with a second fault monitor 43. If the direct current voltage drops down to below the predetermined level before the output of the inverter reaches a rated level, the canceling and re-interconnection is repeated.
    Type: Application
    Filed: August 27, 2001
    Publication date: February 28, 2002
    Applicant: HONDA GIKEN KOGYO KABUSHIKI KAISHA
    Inventors: Tomoki Fukushima, Yoshiaki Kotani, Takao Tamechika, Kenji Kamimura
  • Patent number: 5901801
    Abstract: A motor with a gear reducer includes a housing, a stator secured to the housing and having an inner periphery thereof defining a central space therein, and a rotor formed of a magnet material and rotatably fitted in the central space of the stator. The rotor has an axial through hole formed therein in coaxial relation to an axis of rotation of the rotor. An output shaft is connected through a gear reducer to the rotor to be rotatively driven thereby, for outputting a rotating output from the rotor through the gear reducer. The output shaft extends through the axial through hole of the rotor and is rotatably supported by opposite ends of the housing. The rotor has a gear forming part of the gear reducer formed thereon at one end thereof, and a hook formed thereon at another end thereof and engageable with a moving device such as an assembly jig in an axial direction of the output shaft.
    Type: Grant
    Filed: October 16, 1996
    Date of Patent: May 11, 1999
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Naoya Toida, Yoshiaki Kotani, Yosihisa Hirose, Yosihiro Iijima, Hiroo Kanke
  • Patent number: 5793132
    Abstract: An electric wheel motor mounted integrally in a wheel has at least one electric leader line extending from the inside of a motor main body of the motor to the outside thereof. A breather passage is provided in the at least one electric leader line and communicates the inside of the motor main body with the outside thereof.
    Type: Grant
    Filed: June 14, 1996
    Date of Patent: August 11, 1998
    Assignee: Honda Giken Kogyo K.K.
    Inventors: Yosihisa Hirose, Naoya Toida, Hiroo Kanke, Yoshiaki Kotani, Yoshihiro Iijima
  • Patent number: 5691584
    Abstract: A wheel motor for a vehicle is provided in which an electric motor is arranged in a central space defined in a wheel, to rotatably drive the wheel. A gear reducer is also arranged in the central space of the wheel, which has a plurality of gears including a final stage gear having an axial through hole formed therein. The electric motor includes a housing fixed to the vehicle body, a stator secured to the housing, a rotor rotatably fitted in a central space defined in the stator to generate the rotative driving force during rotation thereof, and an output shaft connected to the rotor through the gear reducer as well as to the wheel to be rotatively driven by the rotor, for transmitting the rotating output from the rotor through the gear reducer to the wheel. The output shaft extends through an axial through hole formed in the final stage gear of the gear reducer and an axial through hole formed in the rotor, and is rotatably supported by opposite end portions of the housing.
    Type: Grant
    Filed: September 1, 1994
    Date of Patent: November 25, 1997
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Naoya Toida, Yoshiaki Kotani, Yoshihiro Iijima, Junji Okuda, Yoshihisa Hirose
  • Patent number: 5633544
    Abstract: A wheel motor for a vehicle has an electric motor which is arranged in a central space defined in a wheel, to rotatively drive the wheel. A gear reducer is also arranged in the central space of the wheel. The electric motor includes a housing fixed to the vehicle body, a stator secured to the housing, a rotor rotatably fitted in a central space defined in the stator to generate the rotative driving force during rotation thereof, and an output shaft connected through the gear reducer to the rotor to be rotatively driven thereby, for transmitting the rotating output from the rotor through the gear reducer to the wheel. The output shaft extends through an axial through hole formed in the final stage gear of the gear reducer and an axial through hole formed in the rotor, and is rotatably supported by opposite end portions of the housing. An electric circuit for driving the electric motor is arranged in the central space of the wheel, together with the electric motor.
    Type: Grant
    Filed: September 1, 1994
    Date of Patent: May 27, 1997
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Naoya Toida, Yoshiaki Kotani, Yoshihiro Iijima, Junji Okuda, Yoshihisa Hirose
  • Patent number: 5156232
    Abstract: An operation controlling apparatus for a passenger operated machine such as a tractor, snowmobile or the like. The apparatus includes an engine cut-off mechanism which terminates engine operation if an operator is expelled from the machine seat for a pre-determined time. Relatively short, intermittent periods of displacement of an operator from the seat, such as when travelling over rough or bumpy terrain, will not terminate engine operation. After emergency engine stoppage, the apparatus requires the machine be placed in a start waiting state, for instance by disengaging the clutch or when the transmission is placed in neutral, before the engine can be re-started.
    Type: Grant
    Filed: August 27, 1991
    Date of Patent: October 20, 1992
    Inventors: Fumio Muroya, Yoshiaki Kotani, Naoya Toida, Kazunobu Sato