Patents by Inventor Kazuyuki AGEMURA

Kazuyuki AGEMURA 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).

  • Patent number: 10336426
    Abstract: A trim-tilt device includes a first electric motor electrically connected to a power source and tilts an outboard motor body in an up-and-down direction. A steering device includes a second electric motor electrically connected to the power source. The steering device turns the outboard motor body in a right-and-left direction. A fuel pump is electrically connected to the power source, and supplies fuel to an engine. A controller limits an inrush current into the first electric motor using a PWM control for a predetermined period of time from a starting time point of an input current into the first electric motor.
    Type: Grant
    Filed: November 8, 2017
    Date of Patent: July 2, 2019
    Assignee: YAMAHA HATSUDOKI KABUSHIKI KAISHA
    Inventors: Takeshi Naito, Yoshihiro Mizushima, Kazuyuki Agemura, Makoto Mizutani, Takeshi Ohata, Makoto Ito
  • Publication number: 20180362130
    Abstract: A trim-tilt device includes a first electric motor electrically connected to a power source and tilts an outboard motor body in an up-and-down direction. A steering device includes a second electric motor electrically connected to the power source. The steering device turns the outboard motor body in a right-and-left direction. A fuel pump is electrically connected to the power source, and supplies fuel to an engine. A controller limits an inrush current into the first electric motor using a PWM control for a predetermined period of time from a starting time point of an input current into the first electric motor.
    Type: Application
    Filed: November 8, 2017
    Publication date: December 20, 2018
    Inventors: Takeshi NAITO, Yoshihiro MIZUSHIMA, Kazuyuki AGEMURA, Makoto MIZUTANI, Takeshi OHATA, Makoto ITO
  • Patent number: 8939133
    Abstract: An outboard motor includes an engine and a casing. The engine includes a cylinder unit, ahead cover and an ignition coil device. The cylinder unit is made of metal. The head cover is made of resin and is attached to the cylinder unit. The ignition coil device is attached to the head cover. The casing is made of resin and covers the engine. The coil ignition device includes a radiated noise reducer portion. The radiated noise reducer portion is configured to reduce noise that is radiated from the ignition coil device.
    Type: Grant
    Filed: April 16, 2012
    Date of Patent: January 27, 2015
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventor: Kazuyuki Agemura
  • Patent number: 8827758
    Abstract: A marine vessel propulsion device includes an engine, a propeller shaft, a drive shaft that is rotated by power transmitted from the engine, a dog clutch that transmits rotation of the drive shaft to the propeller shaft, and an engine load generating unit. The engine load generating unit detects relative rotation speed between the drive shaft and the propeller shaft, and generates an engine load opposite in phase to the relative rotation speed detected therebetween.
    Type: Grant
    Filed: July 9, 2012
    Date of Patent: September 9, 2014
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventor: Kazuyuki Agemura
  • Publication number: 20130109255
    Abstract: A marine vessel propulsion device includes an engine, a propeller shaft, a drive shaft that is rotated by power transmitted from the engine, a dog clutch that transmits rotation of the drive shaft to the propeller shaft, and an engine load generating unit. The engine load generating unit detects relative rotation speed between the drive shaft and the propeller shaft, and generates an engine load opposite in phase to the relative rotation speed detected therebetween.
    Type: Application
    Filed: July 9, 2012
    Publication date: May 2, 2013
    Applicant: YAMAHA HATSUDOKI KABUSHIKI KAISHA
    Inventor: Kazuyuki AGEMURA
  • Publication number: 20120298082
    Abstract: An outboard motor includes an engine and a casing. The engine includes a cylinder unit, ahead cover and an ignition coil device. The cylinder unit is made of metal. The head cover is made of resin and is attached to the cylinder unit. The ignition coil device is attached to the head cover. The casing is made of resin and covers the engine. The coil ignition device includes a radiated noise reducer portion. The radiated noise reducer portion is configured to reduce noise that is radiated from the ignition coil device.
    Type: Application
    Filed: April 16, 2012
    Publication date: November 29, 2012
    Applicant: YAMAHA HATSUDOKI KABUSHIKI KAISHA
    Inventor: Kazuyuki AGEMURA