Patents by Inventor Keisuke Daikoku

Keisuke Daikoku 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: 10399656
    Abstract: A remote control system of outboard motor configured to operate the outboard motor through communications with the outboard motor. The remote control system includes an operating lever operated by a boat operator and a motor unit configured to give reactive force against the operation of the operating lever. The motor unit is configured to give the reactive force according to an operating direction of the operating lever and at least any one of an operating speed and a lever position of the operating lever.
    Type: Grant
    Filed: May 2, 2018
    Date of Patent: September 3, 2019
    Assignee: SUZUKI MOTOR CORPORATION
    Inventors: Satoru Fukuchi, Keisuke Daikoku
  • Patent number: 10273915
    Abstract: Combustion air intake ports are provided on left and right side faces of an upper part of an engine cover. An outer louver is disposed to confront the combustion air intake port, and an inner louver is disposed inward of the outer louver at a predetermined interval to face the outer louver. The combustion air received from the combustion air intake port passes through the outer louver and the inner louver and is guided to the engine unit from the guide hole. In this case, a splash of water is dispersed in the outer louver, and a large-sized water droplet falls down due to its self-weight before the combustion air reaches the inner louver, so that a small-sized water droplet can be collected and removed using inertial impaction at the inner louver. Therefore, it is possible to effectively separate water.
    Type: Grant
    Filed: June 9, 2017
    Date of Patent: April 30, 2019
    Assignee: SUZUKI MOTOR CORPORATION
    Inventors: Jiro Saiga, Keisuke Daikoku
  • Publication number: 20180354597
    Abstract: A remote control system of outboard motor configured to operate the outboard motor through communications with the outboard motor. The remote control system includes an operating lever operated by a boat operator and a motor unit configured to give reactive force against the operation of the operating lever. The motor unit is configured to give the reactive force according to an operating direction of the operating lever and at least any one of an operating speed and a lever position of the operating lever.
    Type: Application
    Filed: May 2, 2018
    Publication date: December 13, 2018
    Applicant: SUZUKI MOTOR CORPORATION
    Inventors: Satoru FUKUCHI, Keisuke DAIKOKU
  • Patent number: 10124872
    Abstract: An electric shift actuator is provided in an engine cover in which an engine of an upper unit is accommodated, a forward/reverse shift mechanism is provided in a lower unit, and a shift transmission mechanism including a clutch rod is provided to transmit driving force of the electric shift actuator to the forward/reverse shift mechanism by connecting the electric shift actuator with the forward/reverse shift mechanism, in which the clutch rod is disposed vertically in an intermediate unit on the rear side of a drive shaft that transmits driving force of the engine.
    Type: Grant
    Filed: October 16, 2017
    Date of Patent: November 13, 2018
    Assignee: SUZUKI MOTOR CORPORATION
    Inventors: Shuichi Sugiyama, Keisuke Daikoku
  • Patent number: 10106236
    Abstract: An outboard motor includes a gear housing configured to rotatably house a propeller shaft that transmits a rotative power output from an engine to a propeller device. The gear housing includes a torpedo shape portion and a strut portion. The torpedo shape portion has a shape tapered toward a front side, and a shape biased upward toward the front side. The strut portion is disposed on an upper side of the torpedo shape portion. An outer peripheral surface of the torpedo shape portion is smoothly coupled to an outer peripheral surface of the strut portion via first to third curved surfaces. The first to third curved surfaces are each a curved surface inclined rearward and downward, a curved surface parallel to a front-rear direction, or a curved surface constituted of a part inclined rearward and downward and a part parallel to the front-rear direction.
    Type: Grant
    Filed: May 10, 2017
    Date of Patent: October 23, 2018
    Assignee: Suzuki Motor Corporation
    Inventors: Shuichi Sugiyama, Keisuke Daikoku
  • Patent number: 10036299
    Abstract: An exhaust apparatus of an outboard motor equipped with a four-stroke engine includes an exhaust pipe having a cylindrical shape and being connected to an exhaust passage of an engine holder, wherein the exhaust pipe is disposed in an exhaust passage of the exhaust manifold in a manner being erected upright in parallel to the crankshaft, and the exhaust pipe has an upper end opened in an upper portion of the exhaust passage and a lower end supporting the cylinder block, and the exhaust manifold and the exhaust pipe are provided with a gap therebetween in a plan view acting as an exhaust collection space adapted to collect exhaust gas from the exhaust manifold.
    Type: Grant
    Filed: March 1, 2016
    Date of Patent: July 31, 2018
    Assignee: SUZUKI MOTOR CORPORATION
    Inventors: Tetsushi Achiwa, Keisuke Daikoku
  • Patent number: 10005536
    Abstract: Upper anti-vibration mounts have axial lines arranged in parallel to a longitudinal center line extending in a longitudinal direction of the outboard motor body. Lower anti-vibration mounts have axial lines concentrated on one point on the longitudinal center line extending in a longitudinal direction of the outboard motor body. Meanwhile, the axial lines are inclined at the identical angle symmetrically with respect to the longitudinal center line, so that they intersect in a V-shape in front of the support shaft as seen in a plan view of the outboard motor body.
    Type: Grant
    Filed: May 26, 2017
    Date of Patent: June 26, 2018
    Assignee: SUZUKI MOTOR CORPORATION
    Inventors: Satoru Fukuchi, Keisuke Daikoku
  • Publication number: 20180148149
    Abstract: An electric shift actuator is provided in an engine cover in which an engine of an upper unit is accommodated, a forward/reverse shift mechanism is provided in a lower unit, and a shift transmission mechanism including a clutch rod is provided to transmit driving force of the electric shift actuator to the forward/reverse shift mechanism by connecting the electric shift actuator with the forward/reverse shift mechanism, in which the clutch rod is disposed vertically in an intermediate unit on the rear side of a drive shaft that transmits driving force of the engine.
    Type: Application
    Filed: October 16, 2017
    Publication date: May 31, 2018
    Applicant: SUZUKI MOTOR CORPORATION
    Inventors: Shuichi SUGIYAMA, Keisuke DAIKOKU
  • Patent number: 9981729
    Abstract: An outboard motor includes a gear housing configured to rotatably house a propeller shaft that transmits a rotative power output from an engine to a propeller device. The gear housing includes a torpedo shape portion and a strut portion. The torpedo shape portion has a shape tapered toward a front side, and a shape biased upward toward the front side. The strut portion is disposed on an upper side of the torpedo shape portion. An outer peripheral surface of the torpedo shape portion is smoothly coupled to an outer peripheral surface of the strut portion via first to third curved surfaces. The first to third curved surfaces are each a curved surface inclined rearward and downward, a curved surface parallel to a front-rear direction, or a curved surface constituted of a part inclined rearward and downward and a part parallel to the front-rear direction.
    Type: Grant
    Filed: May 10, 2017
    Date of Patent: May 29, 2018
    Assignee: SUZUKI MOTOR CORPORATION
    Inventors: Shuichi Sugiyama, Keisuke Daikoku
  • Patent number: 9908604
    Abstract: The outboard motor includes a lower unit that rotatably supports a propeller shaft installed with propellers, and a shift unit that switches a shift position. The lower unit is provided with an upwardly opened shift unit storage chamber and a lid member that covers the upper side of the shift unit storage chamber. The shift unit has a dog clutch that switches the shift position by reciprocating in parallel with the drive shaft, a shift fork member that reciprocates the dog clutch in parallel with the drive shaft, and an actuator that reciprocates the shift fork member in parallel with the drive shaft. The actuator is supported by the lid member.
    Type: Grant
    Filed: November 12, 2015
    Date of Patent: March 6, 2018
    Assignee: SUZUKI MOTOR CORPORATION
    Inventors: Shuichi Sugiyama, Keisuke Daikoku
  • Patent number: 9869228
    Abstract: In an exhaust passage structure in a V-type four-stroke engine of an outboard motor, an exhaust passage is connected to the respective exhaust ports of a plurality of cylinders so that a first exhaust passage portion is provided on at least one lateral side of the cylinder block in a width direction and collects exhaust gas discharged from the respective exhaust ports of the plurality of cylinder assemblies, while a second exhaust passage portion connects the first exhaust passage portion with an exhaust muffler chamber installed outside the engine, and an exhaust guiding portion is provided so as to oppose to a joint surface between the cylinder block and the cylinder head in a manner to be located in the first exhaust passage portion to guide the exhaust gas discharged from the exhaust ports to a connecting portion between the first exhaust passage portion and the second exhaust passage portion.
    Type: Grant
    Filed: December 22, 2015
    Date of Patent: January 16, 2018
    Assignee: SUZUKI MOTOR CORPORATION
    Inventors: Tetsushi Achiwa, Keisuke Daikoku
  • Publication number: 20170370334
    Abstract: Combustion air intake ports are provided on left and right side faces of an upper part of an engine cover. An outer louver is disposed to confront the combustion air intake port, and an inner louver is disposed inward of the outer louver at a predetermined interval to face the outer louver. The combustion air received from the combustion air intake port passes through the outer louver and the inner louver and is guided to the engine unit from the guide hole. In this case, a splash of water is dispersed in the outer louver, and a large-sized water droplet falls down due to its self-weight before the combustion air reaches the inner louver, so that a small-sized water droplet can be collected and removed using inertial impaction at the inner louver. Therefore, it is possible to effectively separate water.
    Type: Application
    Filed: June 9, 2017
    Publication date: December 28, 2017
    Applicant: SUZUKI MOTOR CORPORATION
    Inventors: Jiro SAIGA, Keisuke DAIKOKU
  • Patent number: 9840317
    Abstract: An outboard motor includes a cooling water passage structure, in which a combustion chamber periphery water jacket through which the cooling water flows around the combustion chamber and an exhaust port periphery water jacket through which the cooling water flows around the exhaust port are formed in the cylinder head, a cylinder periphery water jacket through which the cooling water flows around the cylinder is formed in the cylinder block, and an exhaust passage periphery water jacket through which the cooling water flows around the exhaust passage is formed around the exhaust passage. The water jackets are connected such that the cooling water from the water passage will flow through the combustion chamber periphery water jacket, the exhaust port periphery water jacket, the cylinder periphery water jacket, and the exhaust passage periphery water jacket in order.
    Type: Grant
    Filed: January 29, 2016
    Date of Patent: December 12, 2017
    Assignee: SUZUKI MOTOR CORPORATION
    Inventors: Tetsushi Achiwa, Keisuke Daikoku
  • Publication number: 20170341723
    Abstract: Upper anti-vibration mounts have axial lines arranged in parallel to a longitudinal center line extending in a longitudinal direction of the outboard motor body. Lower anti-vibration mounts have axial lines concentrated on one point on the longitudinal center line extending in a longitudinal direction of the outboard motor body. Meanwhile, the axial lines are inclined at the identical angle symmetrically with respect to the longitudinal center line, so that they intersect in a V-shape in front of the support shaft as seen in a plan view of the outboard motor body.
    Type: Application
    Filed: May 26, 2017
    Publication date: November 30, 2017
    Applicant: SUZUKI MOTOR CORPORATION
    Inventors: Satoru FUKUCHI, Keisuke DAIKOKU
  • Publication number: 20170334537
    Abstract: An outboard motor includes a gear housing configured to rotatably house a propeller shaft that transmits a rotative power output from an engine to a propeller device. The gear housing includes a torpedo shape portion and a strut portion. The torpedo shape portion has a shape tapered toward a front side, and a shape biased upward toward the front side. The strut portion is disposed on an upper side of the torpedo shape portion. An outer peripheral surface of the torpedo shape portion is smoothly coupled to an outer peripheral surface of the strut portion via first to third curved surfaces. The first to third curved surfaces are each a curved surface inclined rearward and downward, a curved surface parallel to a front-rear direction, or a curved surface constituted of a part inclined rearward and downward and a part parallel to the front-rear direction.
    Type: Application
    Filed: May 10, 2017
    Publication date: November 23, 2017
    Applicant: SUZUKI MOTOR CORPORATION
    Inventors: Shuichi SUGIYAMA, Keisuke DAIKOKU
  • Publication number: 20170334536
    Abstract: An outboard motor includes a gear housing configured to rotatably house a propeller shaft that transmits a rotative power output from an engine to a propeller device. The gear housing includes a torpedo shape portion and a strut portion. The torpedo shape portion has a shape tapered toward a front side, and a shape biased upward toward the front side. The strut portion is disposed on an upper side of the torpedo shape portion. An outer peripheral surface of the torpedo shape portion is smoothly coupled to an outer peripheral surface of the strut portion via first to third curved surfaces. The first to third curved surfaces are each a curved surface inclined rearward and downward, a curved surface parallel to a front-rear direction, or a curved surface constituted of a part inclined rearward and downward and a part parallel to the front-rear direction.
    Type: Application
    Filed: May 10, 2017
    Publication date: November 23, 2017
    Applicant: SUZUKI MOTOR CORPORATION
    Inventors: Shuichi SUGIYAMA, Keisuke DAIKOKU
  • Patent number: 9764811
    Abstract: In an outboard motor equipped with a V-type four-cycle engine provided with a left bank extending leftward and obliquely rearward and a right bank extending rightward and obliquely rearward, a drive shaft is perpendicularly disposed in the outboard motor body so as to transmit a driving force from the engine to a propeller disposed below the engine, and center positions of the left side exhaust passage and the right side exhaust passage are positioned forward than the drive shaft in a front-and-rear direction in an advancing direction of the outboard motor.
    Type: Grant
    Filed: January 29, 2016
    Date of Patent: September 19, 2017
    Assignee: SUZUKI MOTOR CORPORATION
    Inventors: Tetsushi Achiwa, Keisuke Daikoku
  • Patent number: 9731803
    Abstract: A forward/backward switching mechanism having an intermediate gear supported by an intermediate shaft perpendicular to a drive shaft is interposed between first and second input shafts. A clutch body is a dog clutch having upper and lower locking dogs. As the dog clutch moves along an axial direction of the second input shaft and is engaged with upper or lower gears, rotation of the first input shaft is forwardly or reversely transmitted to the second input shaft.
    Type: Grant
    Filed: March 1, 2016
    Date of Patent: August 15, 2017
    Assignee: SUZUKI MOTOR CORPORATION
    Inventors: Tetsushi Achiwa, Keisuke Daikoku
  • Patent number: 9708048
    Abstract: The outboard motor includes a lower unit that rotatably supports a propeller shaft and a shift unit that switches a shift position. A drive shaft that transmits rotational power to the propeller shaft has upper and lower drive shafts provided coaxially and in series, end to end. The shift unit has an upper gear rotating in synchronization with the upper drive shaft, a lower gear provided rotatably with respect to the lower drive shaft, an intermediate gear that transmits rotation of the upper gear to the lower gear, and a bearing that rotatably supports the middle shaft provided with the intermediate gear. The intermediate gear and the bearing are modularized and are detachably installed to the lower unit.
    Type: Grant
    Filed: November 11, 2015
    Date of Patent: July 18, 2017
    Assignee: SUZUKI MOTOR CORPORATION
    Inventors: Shuichi Sugiyama, Keisuke Daikoku
  • Patent number: 9708044
    Abstract: Disclosed is an outboard motor including a drive shaft that transmits rotational power from an engine, a shift unit provided in the middle of the drive shaft, and a water pump that feeds a coolant to the engine. The drive shaft has a first input shaft that receives the rotational power transmitted from the engine and a second input shaft that receives the rotational power transmitted from the first input shaft. The shift unit and the water pump are integrated into a single shift unit module installed detachably to the lower unit casing.
    Type: Grant
    Filed: March 8, 2016
    Date of Patent: July 18, 2017
    Assignee: SUZUKI MOTOR CORPORATION
    Inventors: Tetsushi Achiwa, Keisuke Daikoku