Patents by Inventor Yuki Ikegaya

Yuki Ikegaya 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: 11105260
    Abstract: An outboard motor includes a shift switch including a shift shaft and a rotary drive provided on an axis of the shift shaft and that rotates the shift shaft, and that switches a rotation direction of a propeller shaft. An entirety of the rotary drive is disposed below a mount, and at least a portion of the rotary drive is disposed above a lower case.
    Type: Grant
    Filed: November 30, 2018
    Date of Patent: August 31, 2021
    Assignee: YAMAHA HATSUDOKI KABUSHIKI KAISHA
    Inventors: Yukio Takeda, Yuki Ikegaya
  • Patent number: 11091242
    Abstract: An outboard motor includes a shaft including a second spline that upwardly extends from a housing. The second spline is meshed with a first spline disposed inside either an engine cowl or an upper housing. The second spline includes a distal end and a body. The distal end is provided on an upper end of the shaft. The body is provided below the distal end. In the second spline, a groove width in the circumferential direction at the distal end is larger than a groove width in the circumferential direction at the body.
    Type: Grant
    Filed: September 18, 2019
    Date of Patent: August 17, 2021
    Assignee: YAMAHA HATSUDOKI KABUSHIKI KAISHA
    Inventors: Yuki Ikegaya, Kenji Yukishima
  • Patent number: 11066142
    Abstract: When a shift member is in a first position, a first clutch couples a second drive shaft to a first drive shaft. When the shift member is in the first position, a second clutch decouples a first gear from the first drive shaft. When the shift member is in the first position, a third clutch decouples a second gear from the second drive shaft.
    Type: Grant
    Filed: July 1, 2020
    Date of Patent: July 20, 2021
    Assignee: YAMAHA HATSUDOKI KABUSHIKI KAISHA
    Inventors: Yuki Ikegaya, Satoru Hamada, Takahiro Oguma, Akihiro Onoue
  • Publication number: 20210061432
    Abstract: An outboard motor includes an engine, a propeller shaft that rotates together with a propeller and extends in a forward-rearward direction, and a lower case that houses the propeller shaft. The lower case includes a front case and a rear case separate from the front case and positioned rearward of the front case, and the front case and the rear case are assembled to each other.
    Type: Application
    Filed: August 20, 2020
    Publication date: March 4, 2021
    Inventors: Morihiko NANJO, Akihiro ONOUE, Satoru HAMADA, Kimitaka SARUWATARI, Yuki IKEGAYA
  • Publication number: 20210053664
    Abstract: An outboard motor includes an engine, a drive shaft, and a shift shaft disposed forward of the drive shaft. The shift shaft includes a first shift shaft that extends in an upward-downward direction, a second shift shaft disposed below the first shift shaft and spaced apart from and rearward of the first shift shaft, the second shift shaft extending in the upward-downward direction, and a shift force transmission to transmit, to the second shift shaft, a shift force applied to the first shift shaft.
    Type: Application
    Filed: August 19, 2020
    Publication date: February 25, 2021
    Inventors: Morihiko NANJO, Akihiro ONOUE, Satoru HAMADA, Kimitaka SARUWATARI, Yuki IKEGAYA
  • Publication number: 20210001968
    Abstract: When a shift member is in a first position, a first clutch couples a second drive shaft to a first drive shaft. When the shift member is in the first position, a second clutch decouples a first gear from the first drive shaft. When the shift member is in the first position, a third clutch decouples a second gear from the second drive shaft.
    Type: Application
    Filed: July 1, 2020
    Publication date: January 7, 2021
    Inventors: Yuki IKEGAYA, Satoru HAMADA, Takahiro OGUMA, Akihiro ONOUE
  • Publication number: 20210001969
    Abstract: An engine includes a crankshaft extending in a vertical direction. A drive shaft is connected to the crankshaft and coaxial with the crankshaft. A water intake passage is connected to the engine. A water pump is connected to the water intake passage. The water pump includes a pump shaft. The pump shaft is eccentrically mounted with respect to the drive shaft and parallel or substantially parallel to the drive shaft. The pump shaft rotates according to rotation of the drive shaft.
    Type: Application
    Filed: July 1, 2020
    Publication date: January 7, 2021
    Inventors: Yuki IKEGAYA, Takahiro OGUMA, Satoru HAMADA, Akihiro ONOUE
  • Patent number: 10761305
    Abstract: Provided is a zoom lens including: positive first unit; negative second unit; aperture stop; positive third unit; positive fourth unit; and rear lens group including at least one lens unit, wherein the fourth unit includes a positive lens, and wherein an amount of movement of the fourth unit during zooming from wide angle end to telephoto end, distances between the aperture stop and the fourth unit at the wide angle end and between the aperture stop and the fourth unit at the telephoto end, focal lengths of the fourth unit and of the zoom lens at the wide angle end, a length of the zoom lens at the wide angle end, an Abbe number of material of the positive lens with respect to d-line, and a partial dispersion ratio of the material of the positive lens with respect to g-line and F-line are each appropriately set.
    Type: Grant
    Filed: December 17, 2018
    Date of Patent: September 1, 2020
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Yuki Ikegaya
  • Publication number: 20200130801
    Abstract: An outboard motor includes a shaft including a second spline that upwardly extends from a housing. The second spline is meshed with a first spline disposed inside either an engine cowl or an upper housing. The second spline includes a distal end and a body. The distal end is provided on an upper end of the shaft. The body is provided below the distal end. In the second spline, a groove width in the circumferential direction at the distal end is larger than a groove width in the circumferential direction at the body.
    Type: Application
    Filed: September 18, 2019
    Publication date: April 30, 2020
    Inventors: Yuki IKEGAYA, Kenji YUKISHIMA
  • Publication number: 20190218966
    Abstract: An outboard motor includes a shift switch including a shift shaft and a rotary drive provided on an axis of the shift shaft and that rotates the shift shaft, and that switches a rotation direction of a propeller shaft. An entirety of the rotary drive is disposed below a mount, and at least a portion of the rotary drive is disposed above a lower case.
    Type: Application
    Filed: November 30, 2018
    Publication date: July 18, 2019
    Inventors: Yukio TAKEDA, Yuki IKEGAYA
  • Publication number: 20190196160
    Abstract: Provided is a zoom lens including: positive first unit; negative second unit; aperture stop; positive third unit; positive fourth unit; and rear lens group including at least one lens unit, wherein the fourth unit includes a positive lens, and wherein an amount of movement of the fourth unit during zooming from wide angle end to telephoto end, distances between the aperture stop and the fourth unit at the wide angle end and between the aperture stop and the fourth unit at the telephoto end, focal lengths of the fourth unit and of the zoom lens at the wide angle end, a length of the zoom lens at the wide angle end, an Abbe number of material of the positive lens with respect to d-line, and a partial dispersion ratio of the material of the positive lens with respect to g-line and F-line are each appropriately set.
    Type: Application
    Filed: December 17, 2018
    Publication date: June 27, 2019
    Inventor: Yuki Ikegaya
  • Patent number: 10073252
    Abstract: An optical system includes, in order from object side to image side, a negative front lens unit, an aperture stop, and a positive rear lens unit. The front lens unit consists of, in order from object side to image side, a negative first lens having a concave surface on image side, a negative second lens with a concave surface on image side, and a positive third lens. The rear lens unit consists of, in order from object side to image side, a positive fourth lens, and a cemented lens formed by cementing a positive lens and a negative lens together. Here, a distance on optical axis from a lens surface on object side of the first lens to a lens surface on image side of the third lens, a focal length of the third lens, and a focal length of the optical system are set to appropriate values.
    Type: Grant
    Filed: April 6, 2017
    Date of Patent: September 11, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yuki Ikegaya
  • Publication number: 20170293111
    Abstract: An optical system includes, in order from object side to image side, a negative front lens unit, an aperture stop, and a positive rear lens unit. The front lens unit consists of, in order from object side to image side, a negative first lens having a concave surface on image side, a negative second lens with a concave surface on image side, and a positive third lens. The rear lens unit consists of, in order from object side to image side, a positive fourth lens, and a cemented lens formed by cementing a positive lens and a negative lens together. Here, a distance on optical axis from a lens surface on object side of the first lens to a lens surface on image side of the third lens, a focal length of the third lens, and a focal length of the optical system are set to appropriate values.
    Type: Application
    Filed: April 6, 2017
    Publication date: October 12, 2017
    Inventor: Yuki Ikegaya
  • Patent number: 9678408
    Abstract: Provided is a zoom lens including a plurality of lens units, in which an interval between each pair of adjacent lens units is changed during zooming, the plurality of lens units include a lens unit BR arranged closest to image side in zoom lens, which moves in optical axis direction during focusing and a lens element A arranged adjacent to lens unit BR on object side, having refractive power of sign opposite to that of lens unit BR, in which lens element A consists of a single lens or a cemented lens, and distance between surface closest to image side of lens element A and image plane at wide angle end, distance between surface closest to image side of lens element A and surface closest to object side of lens unit BR at wide angle end, and focal length of zoom lens at wide angle end are each appropriately set.
    Type: Grant
    Filed: February 2, 2016
    Date of Patent: June 13, 2017
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Yuki Ikegaya
  • Patent number: 9618731
    Abstract: Provided is an optical system, including, in order from an object side to an image side: a front group having a negative refractive power; an aperture stop; and a rear group having a positive refractive power, in which: the front group consists of in order from the object side to the image side: a negative first lens (L1) having a concave surface facing the image side; a second lens (L2); and a third lens (L3); the rear group consists of, in order from the object side to the image side: a positive fourth lens (L4); and a negative cemented lens (L56), which is obtained by cementing a positive fifth lens (L5) and a negative sixth lens (L6); and a focal length f56 of the cemented lens (L56) and a focal length f of the optical system are each appropriately set.
    Type: Grant
    Filed: April 6, 2016
    Date of Patent: April 11, 2017
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Yuki Ikegaya
  • Publication number: 20160299317
    Abstract: Provided is an optical system, including, in order from an object side to an image side: a front group having a negative refractive power; an aperture stop; and a rear group having a positive refractive power, in which: the front group consists of in order from the object side to the image side: a negative first lens (L1) having a concave surface facing the image side; a second lens (L2); and a third lens (L3); the rear group consists of, in order from the object side to the image side: a positive fourth lens (L4); and a negative cemented lens (L56), which is obtained by cementing a positive fifth lens (L5) and a negative sixth lens (L6); and a focal length f56 of the cemented lens (L56) and a focal length f of the optical system are each appropriately set.
    Type: Application
    Filed: April 6, 2016
    Publication date: October 13, 2016
    Inventor: Yuki Ikegaya
  • Publication number: 20160223800
    Abstract: Provided is a zoom lens including a plurality of lens units, in which an interval between each pair of adjacent lens units is changed during zooming, the plurality of lens units include a lens unit BR arranged closest to image side in zoom lens, which moves in optical axis direction during focusing and a lens element A arranged adjacent to lens unit BR on object side, having refractive power of sign opposite to that of lens unit BR, in which lens element A consists of a single lens or a cemented lens, and distance between surface closest to image side of lens element A and image plane at wide angle end, distance between surface closest to image side of lens element A and surface closest to object side of lens unit BR at wide angle end, and focal length of zoom lens at wide angle end are each appropriately set.
    Type: Application
    Filed: February 2, 2016
    Publication date: August 4, 2016
    Inventor: Yuki Ikegaya
  • Patent number: 8192239
    Abstract: A marine vessel propulsion system includes a plurality of propulsion devices, each including a motor and a propeller rotated by the motor.
    Type: Grant
    Filed: March 30, 2010
    Date of Patent: June 5, 2012
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventors: Makoto Ito, Takaaki Bamba, Noriyoshi Ichikawa, Yuki Ikegaya, Shu Akuzawa
  • Publication number: 20100248560
    Abstract: A marine vessel propulsion system includes a plurality of propulsion devices, each including a motor and a propeller rotated by the motor.
    Type: Application
    Filed: March 30, 2010
    Publication date: September 30, 2010
    Applicant: YAMAHA HATSUDOKI KABUSHIKI KAISHA
    Inventors: Makoto ITO, Takaaki BAMBA, Noriyoshi ICHIKAWA, Yuki IKEGAYA, Shu AKUZAWA