Cowl Patents (Class 440/77)
  • Patent number: 10843780
    Abstract: A device and technique for reducing noise experienced by boat passengers from an outboard boat motor is discussed. The device may be implemented in the form of a cover that is adjacent to at least a portion of the boat motor. The cover includes one or more walls or surfaces that reflect or attenuate soundwaves. The cover may be attached to the boat motor and/or the boat. The cover may be integral with the boat motor and/or the boat. The cover may be attached to the boat via a hinge to permit the cover to be pivoted away from the boat motor. The materials used to construct the cover may be provided in layers that help to attenuate, absorb or reflect soundwaves.
    Type: Grant
    Filed: March 8, 2019
    Date of Patent: November 24, 2020
    Assignee: Willard Patent LLC
    Inventor: Winn Willard
  • Patent number: 10550802
    Abstract: An air cleaner includes a housing and a filter element located within the housing. The housing includes a housing body and a fiber molding assembly. The housing body is formed by a plastic molding. The housing body has a wall located upstream of the filter element in an air flow direction and a recess, which is an inwardly recessed part of the wall. The fiber molding assembly is fixed to the wall, covers the recess from outside, and forms a part of a side wall of an inlet passage together with the recess. A communication hole for communication between the inlet passage and an interior of the housing body is formed in the recess.
    Type: Grant
    Filed: January 4, 2018
    Date of Patent: February 4, 2020
    Assignee: TOYOTA BOSHOKU KABUSHIKI KAISHA
    Inventor: Ryusuke Kimura
  • Patent number: 10536596
    Abstract: A supporting member includes a first plate portion including a supporting surface, a first hole, and a female thread portion formed at an inner peripheral surface of the first hole; a second plate portion provided by hemming the metal plate member; a third plate portion provided by bending the metal plate member at one end portion of the second plate portion at substantially a right angle; and a second hole continuing between the second and third plate portions so that the screw threadably engageable with the female thread portion is prevented from interfering with the second and third plate portions. The second and third plate portions provide a bent portion therebetween positioned within a range of a nominal diameter of the female thread portion with respect to a thickness direction of the third plate portion, as seen in a direction perpendicular to the thickness direction.
    Type: Grant
    Filed: October 16, 2018
    Date of Patent: January 14, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventor: Daiju Yoshino
  • Patent number: 10465641
    Abstract: An outboard motor includes an engine, an engine cover accommodating the engine, and an intake path between the engine cover and the engine. The intake path directs external air to the engine. The engine cover includes an upper cover and a lower cover. The upper cover includes an opening to take external air into the intake path. The intake path includes a first airflow passage, a second airflow passage, and an airflow space. The first airflow passage is at least partially defined by an inner surface of the engine cover, and downwardly directs the external air. The second airflow passage is at least partially defined by the inner surface of the engine cover, and upwardly directs the external air. The airflow space is above the lower cover and continues to the first airflow passage and the second airflow passage.
    Type: Grant
    Filed: September 16, 2015
    Date of Patent: November 5, 2019
    Assignee: YAMAHA HATSUDOKI KABUSHIKI KAISHA
    Inventors: Katsumi Ochiai, Tomoaki Sato, Yasutaka Itou, Yuta Miyagi, Takayuki Yamada
  • Patent number: 10273863
    Abstract: A fan is suitable for an air-guiding system of an outboard motor including an internal combustion engine and a covering hood bounding an engine interior space. The engine drives the fan, which is connected to an upright shaft journal projecting beyond an upper side of a housing of the engine. The covering hood has air flow openings, and the fan influences the air flows in the covering hood interior space. A flywheel, fixedly attached to the upright shaft journal, carries a fan wheel of the fan. The fan wheel is set in place from above, and the flywheel carries the fan wheel for conjoint rotation. Airflows enter the interior space via an inlet opening and a first conducting device, and the airflows, under the action of the fan, act upon at least parts of surfaces of the internal combustion engine and the auxiliary units to cool the internal combustion engine.
    Type: Grant
    Filed: April 19, 2017
    Date of Patent: April 30, 2019
    Assignee: Neander Motors AG
    Inventors: Claus Bruestle, Richard Davis
  • 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
  • Patent number: 10259554
    Abstract: An outboard motor has an adapter plate with an upper surface supporting an engine, a lower surface spaced therefrom, and fore and aft sides connecting the upper and lower surfaces. A first pocket is defined in the adapter plate's fore side and a second pocket is defined in its aft side. A midsection housing is coupled to the adapter plate's lower surface and suspends a propulsion unit therebelow. A driveshaft coupling the engine's output shaft to the propulsion unit's propeller shaft extends through the adapter plate. A steering arm, which extends into the first pocket, has a hole through which the driveshaft extends. A mount in the second pocket is located aft of the driveshaft, and the mount's fore side is coupled to the steering arm's aft end by way of connectors. A cover plate attached to the adapter plate's aft side secures the mount within the second pocket.
    Type: Grant
    Filed: January 23, 2018
    Date of Patent: April 16, 2019
    Assignee: Brunswick Corporation
    Inventors: Charles H. Eichinger, Wayne M. Jaszewski, Donald Anderson, Jr.
  • Patent number: 9909545
    Abstract: An outboard motor includes an internal combustion engine powering the outboard motor and a cowl covering the engine and having a vent allowing air under the cowl. A throttle body meters flow of the air into the engine and an intake structure downstream of the throttle body delivers the metered airflow to one or more combustion chambers in a cylinder block of the engine. A sound enhancement assembly in acoustic communication with the intake structure collects sounds emitted by the engine. The sound enhancement assembly is configured to amplify a subset of the collected sounds that have frequencies within a desired frequency range. A method for modifying sounds produced by an air intake system of an internal combustion engine powering an outboard motor is also disclosed. The method includes positioning a sound enhancement assembly in acoustic communication with an air intake passageway located downstream of the engine's throttle body.
    Type: Grant
    Filed: July 26, 2016
    Date of Patent: March 6, 2018
    Assignee: Brunswick Corporation
    Inventors: Andrew S. Waisanen, Jeffrey C. Etapa, Wayne M. Jaszewski, Jeffrey J. Broman, Brian J. Fregonese
  • Patent number: 9630697
    Abstract: [Problem] To perform an assembling operation easily while attaining improvement in engine efficiency. [Solution] An outboard motor 10 according to the invention includes an upstream side duct 42 which is fixed to an engine upper cover 27, and a downstream side duct 43 which is fixed to an engine 14 side. The upstream side duct 42 includes an exhaust port 52 which is opened at its side face. The downstream side duct 43 includes a downstream side lower duct 59 and a downstream side upper duct 60. In the downstream side lower duct 59, a suction port 61 is provided at a position opposed to the exhaust port 52 and separately at a predetermined distance from the exhaust port 52. In the downstream side upper duct 60, an exhaust port formed toward a throttle body 36 of the engine 14 is provided above the downstream side lower duct 59. The upstream side duct 42 and the downstream side duct 43 are formed so as not to interfere with each other when the engine upper cover 27 is moved vertically.
    Type: Grant
    Filed: April 9, 2015
    Date of Patent: April 25, 2017
    Assignee: SUZUKI MOTOR CORPORATION
    Inventors: Kenta Yamada, Yasushi Miyashita, Akinori Yamazaki
  • Patent number: 9611022
    Abstract: An air intake structure for an outboard engine wherein air which is taken in from an air intake opening provided in an engine cover for covering the upper part of the outboard engine is supplied to and sucked into a throttle body. The engine cover has an air intake opening which is open at the front of the outboard engine in the forward movement direction and a lid member which can open and close the air intake opening. A space which connects the air intake opening and the throttle body is provided separated from an engine room.
    Type: Grant
    Filed: October 25, 2013
    Date of Patent: April 4, 2017
    Assignee: Suzuki Motor Corporation
    Inventor: Shingo Matsumoto
  • Patent number: 9587599
    Abstract: An outboard motor includes: an engine cover having an upper cover and a lower cover which form an engine room and which can be separated from each other vertically; a ventilation fan for ventilating the engine room; and a fan cover which covers the ventilation fan, the engine cover is configured so that the upper cover is able to be attached to and detached from the lower cover and the lower cover is fixed to an outboard motor main body including an engine, the lower cover has an external air inlet through which to take air into the engine room and a discharge outlet through which to discharge air from the engine room, the fan cover has an air outlet through which to cause air that is sent from the ventilation fan to flow out, and the discharge outlet is connected to the air outlet.
    Type: Grant
    Filed: February 12, 2016
    Date of Patent: March 7, 2017
    Assignee: SUZUKI MOTOR CORPORATION
    Inventors: Seiichiro Umaoka, Yasuomi Ishihara, Satoshi Kishi
  • Patent number: 9463859
    Abstract: An outboard motor adapter plate couples a marine engine to a driveshaft housing, and includes an upper rim configured to be coupled to a lower surface of a cylinder block of the engine. A lower rim of the adapter plate is configured to be coupled to an upper surface of a sump located in the driveshaft housing. A wall defines a passageway having an inner perimetral surface, and the inner perimetral surface extends from the upper rim to the lower rim. A mounting area is configured for coupling a mount to the adapter plate. A shield covers at least a portion of the inner perimetral surface adjacent the mounting area, so as to at least partially thermally isolate the mount from heated fluid that drains from the cylinder block, through the passageway, and into the sump. A method and a shield for thermal isolation are also described.
    Type: Grant
    Filed: February 13, 2015
    Date of Patent: October 11, 2016
    Assignee: Brunswick Corporation
    Inventors: Robert D. Cooper, III, Justin Martin, Donald Anderson, Jr.
  • Patent number: 9422046
    Abstract: A boat propulsion device includes an engine including a crankshaft extending in an up-and-down direction and a cowling accommodating the engine. The cowling includes a first cowling portion preferably made of resin, a second cowling and a coupling mechanism configured to couple the first cowling portion to the second cowling portion. The coupling mechanism includes a first lock portion and a second lock portion. The first lock portion is attached to the first cowling portion. The second lock portion is attached to the second cowling portion and locks with the first lock portion. The first cowling portion includes a cowling main body and a support portion. The support portion preferably has a plate shape. The support portion is erected on an inner surface of the cowling main body, supports the first lock portion, and includes a small thickness section and a large thickness section.
    Type: Grant
    Filed: September 22, 2014
    Date of Patent: August 23, 2016
    Assignee: YAMAHA HATSUDOKI KABUSHIKI KAISHA
    Inventor: Yu Ito
  • Patent number: 9359981
    Abstract: An outboard motor including a system for enhancement of a first subset of sounds having a desired frequency, and a method for modifying sounds produced by an air intake system for an internal combustion engine powering the outboard motor are described. The method includes collecting sounds emitted in an area proximate a throttle body of the engine. A first subset of the collected sounds, which have frequencies within desired frequency range, are then amplified. The amplified first subset of sounds are then transmitted to an area outside a cowl covering the engine.
    Type: Grant
    Filed: May 8, 2015
    Date of Patent: June 7, 2016
    Assignee: Brunswick Corporation
    Inventors: Andrew S. Waisanen, Jeffrey C. Etapa
  • Patent number: 9308981
    Abstract: A boat propulsion device includes an engine unit, an attachment portion, an electrical component, wiring, a holder, and an engine cover. The engine unit includes an engine, an exhaust pipe, and a coolant passage. The engine includes a crankshaft which extends vertically. The exhaust pipe is connected to the engine. The coolant passage is configured to cool the engine or the exhaust pipe. The attachment portion is provided integrally with the engine unit on the outside of the coolant passage. The electrical component is attached to the attachment portion. The wiring is connected to the electrical component. The holder is connected to the engine unit on the outside of the coolant passage and holds the wiring. The engine cover houses the engine unit, the attachment portion, the electrical component, the wiring, and the holder.
    Type: Grant
    Filed: August 1, 2014
    Date of Patent: April 12, 2016
    Assignee: YAMAHA HATSUDOKI KABUSHIKI KAISHA
    Inventor: Hikaru Yasukawa
  • Patent number: 9308980
    Abstract: An outboard motor has an adapter plate that supports an internal combustion engine, a driveshaft housing disposed below the adapter plate, and a lower cowl. A lower cowl volume is defined between the adapter plate, cowl and driveshaft housing. A lower cowl volume inlet is configured to supply idle relief exhaust gases to the lower cowl volume and a lower cowl volume outlet is configured to discharge idle relief exhaust gases from the lower cowl volume to atmosphere. The lower cowl volume is configured to cause expansion of the relief exhaust gases prior to discharge of the idle relief exhaust gases to atmosphere.
    Type: Grant
    Filed: July 16, 2014
    Date of Patent: April 12, 2016
    Assignee: Brunswick Corporation
    Inventors: Ryan G. Bonde, Michael J. Biel
  • Patent number: 9216805
    Abstract: A cowl mounting system includes one or more stabilizer fulcrums spaced between front and rear cowl mounts and preloading the cowl to provide cowl stability in the mounted condition. The stabilizer fulcrums also provide port and starboard alignment guides during assembly.
    Type: Grant
    Filed: June 20, 2013
    Date of Patent: December 22, 2015
    Assignee: Brunswick Corporation
    Inventors: Steven J. Amerling, Brad J. Van Ruiswyk
  • Patent number: 9132899
    Abstract: An outboard motor for a marine vessel application, and related methods of making and operating same, are disclosed herein. In at least one embodiment, the outboard motor includes a horizontal-crankshaft engine in an upper portion of the outboard motor, positioned substantially positioned above a trimming axis of the outboard motor. In at least another embodiment, first, second and third transmission devices are employed to transmit rotational power from the engine to one or more propellers at a lower portion of the outboard motor. In at least a further embodiment, the outboard motor is made to include a rigid interior assembly formed by the engine, multiple transmission devices, and a further structural component. In further embodiments, the outboard motor includes numerous cooling, exhaust, and/or oil system components, as well as other transmission features.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: September 15, 2015
    Assignee: Seven Marine, LLC
    Inventors: Eric A. Davis, Richard A. Davis
  • Patent number: 9073616
    Abstract: A marine outboard engine includes an engine having a front, back, top and two lateral sides. A cowling, covering the engine at least partially, includes a central support structure fixedly connected to at least one of the engine, a swivel bracket, and an exhaust system. The central support structure extending across at least a portion of the front, top and back of the engine defines at least partially a space through which at least a portion of at least one of its lateral sides is accessible. The space is selectively covered by at least one side panel which is at least partially selectively connected to the central support structure and at least partially disconnectable therefrom to reveal the portion of the at least one of the lateral sides of the engine while the central support structure extends across at least the portion of the front, top and back thereof.
    Type: Grant
    Filed: March 31, 2014
    Date of Patent: July 7, 2015
    Assignee: BRP US INC.
    Inventors: Dale A. Wiegele, Dave Calamia, George Broughton, Guillaume Longpre, Jeff T. Turner, John Charles Scott, Mark C. Noble, Patrick C. Tetzlaff, Philippe Petit, Roger Raetzman, Vincent Groleau
  • Patent number: 9051040
    Abstract: An outboard engine unit includes a water pump disposed on a lower end portion of an input shaft of a transmission, and left and right cooling water feeding passages interconnecting the water pump and a cooling water inlet of an engine. The left and right cooling water feeding passages are disposed around a plurality of transmission gears disposed on the input shaft of the transmission. A cooling water drawn by the water pump is guided through the left and right cooling water feeding passages to the cooling water inlet.
    Type: Grant
    Filed: June 26, 2013
    Date of Patent: June 9, 2015
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Koji Kuriyagawa, Yoshiyuki Matsuda, Hajime Yoshimura, Nobuchika Katagiri
  • Patent number: 9039469
    Abstract: A marine outboard engine has a cowling having at least one rear panel at a rear end of the cowling. The cowling encloses a power head. A plurality of mount points are disposed inside the cowling and adapted for rigidly mounting a tie-bar bracket. Each mount point is rigidly connected to the power head and has a bracket-mounting hole formed therein. The at least one rear panel has defined thereon a visual indication of an area to be removed to create an opening adapted for receiving therethrough a tie-bar bracket mounted on and extending from the mount points. A tie-bar bracket having a mounting portion and a tie-bar coupling portion is also disclosed. A method of assembling the tie-bar bracket in the cowling is also disclosed.
    Type: Grant
    Filed: January 29, 2013
    Date of Patent: May 26, 2015
    Assignee: BRP US INC.
    Inventors: Dave Calamia, Roger Raetzman
  • Publication number: 20150050848
    Abstract: A vessel propulsion apparatus includes an engine main body including a crankshaft that is rotatable about a rotation axis extending in the up-down direction, auxiliary machinery mounted on the engine main body, a bracket that couples the auxiliary machinery to the engine main body, and an engine cowling that houses the engine main body, the auxiliary machinery, and the bracket. The bracket includes a first mounting portion mounted on the engine main body, a second mounting portion mounted on the auxiliary machinery, a coupling portion coupling the first mounting portion and the second mounting portion, and a holding portion provided in the coupling portion. The holding portion of the bracket holds piping.
    Type: Application
    Filed: May 15, 2014
    Publication date: February 19, 2015
    Applicant: YAMAHA HATSUDOKI KABUSHIKI KAISHA
    Inventor: Ryou NAKAMURA
  • Patent number: 8894455
    Abstract: In an outboard motor having an engine unit housed in an engine room formed by an exterior cover, a protruding portion is projectingly formed on the upper surface of an engine cover covering the upper portion of the outboard motor, and an outside air inlet opened to face forward is provided at the protruding portion.
    Type: Grant
    Filed: February 16, 2012
    Date of Patent: November 25, 2014
    Assignee: Suzuki Motor Corporation
    Inventor: Toshio Watanabe
  • Patent number: 8858282
    Abstract: A marine propulsion system is for propelling a marine vessel in water. The system comprises a marine vessel and an outboard motor that is coupled to the marine vessel. The outboard motor has a first inlet that receives intake air for combustion. A second inlet is located on the hull of the marine vessel and a conduit conveys the intake air from the second inlet on the marine vessel to the first inlet on the outboard motor.
    Type: Grant
    Filed: September 6, 2012
    Date of Patent: October 14, 2014
    Assignee: Brunswick Corporation
    Inventors: Thomas S. Lonnborg, Neil A. Rothe, Randall J. Poirier
  • Patent number: 8858280
    Abstract: An outboard engine has a cowling defining an engine compartment, an internal combustion engine disposed at least in part in the engine compartment, a driveshaft operatively connected to the internal combustion engine, and one of a propeller and an impeller operatively connected to the driveshaft. The one of the propeller and the impeller rotates about an axis that is angled relative to the driveshaft. A device is disposed inside the engine compartment. A box is disposed outside the engine compartment and is operatively connected to the engine compartment. A line has a portion disposed inside the box and an end operatively connected to the device. An outboard engine having a box disposed outside the engine compartment and operatively connected to the bracket is also disclosed. A watercraft having the outboard engine is also disclosed.
    Type: Grant
    Filed: October 31, 2011
    Date of Patent: October 14, 2014
    Assignee: BRP US Inc.
    Inventors: Dale A. Wiegele, Jeff T. Turner, John Charles Scott, Mark C. Noble, Patrick C. Tetzlaff
  • Patent number: 8851945
    Abstract: An outboard engine unit capable of efficiently cooling the interior of an engine cover is disclosed. The outboard engine unit includes a cooling opening capable of guiding air to an interior from an upper part of the engine cover, a first intake channel having a first outlet open to an upper front end and communicating with the opening, a partition wall disposed so as to be oriented substantially in a perpendicular direction below the first outlet; and a second intake channel extending substantially in the perpendicular direction along a rear wall of the engine cover rearward of the partition wall. The outboard engine unit is configured so that air directed from the cooling opening to the interior of the engine cover is directed to the throttle unit via the second cooling air intake channel.
    Type: Grant
    Filed: November 2, 2012
    Date of Patent: October 7, 2014
    Assignee: Honda Motor Co., Ltd.
    Inventors: Yoshihiro Harada, Masashi Kai, Kunihiko Ishizuka
  • Patent number: 8721377
    Abstract: In an outboard motor having an engine and an engine cover adapted to cover the engine, the engine having an air intake passage that opens at the engine cover, it is configured such that a secondary air passage having an inlet disposed at an internal space of the engine cover and an outlet connected to the air intake passage at a position downstream of a throttle valve of the engine. The inlet of the secondary air passage is disposed at an internal space of the engine cover and near a belt cover that covers a timing belt adapted to transmit rotation of a crankshaft of the engine to a cam shaft of the engine.
    Type: Grant
    Filed: October 2, 2012
    Date of Patent: May 13, 2014
    Assignee: Honda Motor Co., Ltd.
    Inventors: Yoshihiro Harada, Koji Kuriyagawa
  • Patent number: 8707915
    Abstract: An exhaust fan chamber is defined with a belt cover and a fan cover provided over the belt cover, and an exhaust fan is accommodated in the exhaust fan chamber. The fan cover has an air intake port for sucking air within an engine cover into the exhaust fan chamber and an exhaust outlet port for discharging air within the exhaust fan chamber to outside of the exhaust fan chamber. The exhaust outlet port is in communication with an exhaust opening formed in an upper portion of the engine cover so that the air discharged through the exhaust outlet port is discharged to outside of the engine cover through the exhaust opening.
    Type: Grant
    Filed: June 21, 2012
    Date of Patent: April 29, 2014
    Assignee: Honda Motor Co., Ltd.
    Inventors: Takeshi Inaba, Kazuhiro Ishizaka
  • Patent number: 8651906
    Abstract: An apparatus for intake of air to an outboard motor includes an inlet receiving a mixture of air and water from atmosphere surrounding the outboard motor and an outlet discharging the air. A conduit extends between the inlet and the outlet. The conduit has a vertically downwardly oriented first flow path, a vertically upwardly oriented second flow path, and a junction joining the first and second flow paths. The junction is oriented with respect to the first and second flow paths such that both centrifugal and gravitational forces separate the water from the air as the mixture flows therethrough.
    Type: Grant
    Filed: August 29, 2011
    Date of Patent: February 18, 2014
    Assignee: Brunswick Corporation
    Inventor: Scott C. Morton
  • Patent number: 8454401
    Abstract: An outboard motor has an engine, an engine cover forming an engine compartment for holding the engine therein, a ventilation system with an outer outlet ventilation space through which air in the engine compartment flows to the outside of the engine compartment, and a generator. The ventilation system includes a case disposed in the engine compartment and forming an air discharge passage leading to the outer outlet ventilation space. A fan is placed in the air discharge passage to deliver air by pressure from the engine compartment to the outer outlet ventilation space. The air discharge passage has an inlet ventilation passage formed in an upper space in the engine compartment and opening upward. The engine compartment holding the engine therein can be efficiently ventilated, and ventilation air can effectively cool the engine and can effectively suppress temperature rise in the engine compartment.
    Type: Grant
    Filed: November 25, 2009
    Date of Patent: June 4, 2013
    Assignee: Honda Motor Co., Ltd.
    Inventors: Shigekazu Sakata, Makoto Yazaki, Shinichi Ide
  • Patent number: 8377266
    Abstract: In a electric corrosion preventing structure of a marine vessel propelling machine, a cylinder is integrally formed in a cylinder block, an electric connection portion is provided in a portion in which a rod guide is fixed to the cylinder, an electric connection portion is provided in a portion in which a piston is fixed to a rod in an inner portion of the cylinder, and the piston fixed to the rod strikes against the rod guide in an electrically connected state, at a maximum extension when the rod protrudes out of the cylinder.
    Type: Grant
    Filed: March 11, 2011
    Date of Patent: February 19, 2013
    Assignee: Showa Corporation
    Inventor: Atsushi Kagawa
  • Patent number: 8371885
    Abstract: An outboard motor has an internal combustion engine, an engine cover forming an engine compartment for holding the internal combustion engine therein, and a top cover covering the engine cover from above and provided with a carrying grip. An intermediate member is placed in a space between the engine cover and the top cover. First connecting parts for connecting the engine cover and the intermediate member are arranged in a space between the engine cover and the intermediate member, and second connecting parts for connecting the top cover and the intermediate cover are arranged in a space between the top cover and the intermediate cover. The connecting parts arranged in the spaces between the engine cover and the top cover ensure rigid connection, the degree of freedom of arranging the connecting parts is increased, and the engine cover can be manufactured at low cost.
    Type: Grant
    Filed: November 25, 2009
    Date of Patent: February 12, 2013
    Assignee: Honda Motor Co., Ltd
    Inventors: Makoto Yazaki, Shinichi Ide, Shigekazu Sakata
  • Publication number: 20120214367
    Abstract: In an outboard motor having an engine unit housed in an engine room formed by an exterior cover, a protruding portion is projectingly formed on the upper surface of an engine cover covering the upper portion of the outboard motor, and an outside air inlet opened to face forward is provided at the protruding portion.
    Type: Application
    Filed: February 16, 2012
    Publication date: August 23, 2012
    Applicant: SUZUKI MOTOR CORPORATION
    Inventor: Toshio Watanabe
  • Patent number: 8142245
    Abstract: An air intake passage system includes an external air intake port provided in a rear portion of a top cover and a passageway section projecting upwardly from the engine cover for directing taken-in external air to the engine. The top cover is provided over the engine cover with a gap therebetween such that the taken-in external air is allowed to flow into the passageway section and a water discharge section is provided between the engine cover and the top cover. Water, having entered together with external air, flows along the upper surface of the engine cover, bypasses the passageway section and is then discharged via the water discharge section.
    Type: Grant
    Filed: May 5, 2010
    Date of Patent: March 27, 2012
    Assignee: Honda Motor Co., Ltd.
    Inventors: Akiko Ichikawa, Koji Sakamoto
  • Patent number: 8133085
    Abstract: In cowling structure for an outboard motor, a through hole is formed below an upper-cowling joining surface of a lower cowling; control cables are supported with a cable supporting groove of a back side plate, and the back side plate is fixed to the through hole; a sealing member that is covered on the outside of the control cables, is fitted into the through hole; a groove of a front side plate is placed around the control cables, and the front side plate is set onto the sealing member; and the sealing member is fixed to the lower cowling by a bolt together with the front side plate. The cowling structure for an outboard motor can prevent water intrusion by removing a notch on an upper-cowling joining surface of a lower cowling.
    Type: Grant
    Filed: June 16, 2009
    Date of Patent: March 13, 2012
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventors: Hiroyuki Hasegawa, Kohei Nomura
  • Patent number: 8118631
    Abstract: An outboard motor includes an engine, and a top cowling and a bottom cowling that are arranged to cover the engine. A flow-joining pipe is connected to each exhaust port of a plurality of cylinders of the engine. A first exhaust pipe, a second exhaust pipe, and a third exhaust pipe are connected to the flow-joining pipe in sequence. The flow-joining pipe and the first exhaust pipe are connected generally at the same height as a bottommost of the cylinders of the engine. The third exhaust pipe is disposed above a topmost of the cylinders of the engine. A catalyst is disposed in a connecting portion between the first exhaust pipe and the second exhaust pipe so as to be housed in an upper end portion of the first exhaust pipe and in a lower end portion of the second exhaust pipe. The outboard motor is thus able to prevent water from adhering to a catalyst while avoiding any increase in size.
    Type: Grant
    Filed: November 30, 2010
    Date of Patent: February 21, 2012
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventor: Katsumi Ochiai
  • Patent number: 8083558
    Abstract: An outboard motor has a top cover extending over an engine cover covering an engine, and an upstream intake silencer spaced upward apart from the top wall of the engine cover. The upstream intake silencer has an entrance duct spaced apart from the top wall and forming an inlet air passage through which air for combustion flows from an air-intake space into the upstream intake silencer. The upstream end of the inlet air passage is on the rear side of the downstream end of an outlet air passage and at a level above that of an air-intake opening. The entrance duct does not extend downward from a bottom wall forming the upstream expansion chamber and protrudes upward from the bottom wall in the upstream expansion chamber.
    Type: Grant
    Filed: October 28, 2009
    Date of Patent: December 27, 2011
    Assignee: Honda Motor Co., Ltd.
    Inventor: Takeshi Inaba
  • Patent number: 8002597
    Abstract: An engine is disposed in a top cowling. Burned gas produced in the engine is discharged to the outside through a first exhaust pipe, a second exhaust pipe, a third exhaust pipe, exhaust passage, and a exhaust passage. A catalyst is disposed to be housed in the first exhaust pipe and the second exhaust pipe. The first exhaust pipe and the second exhaust pipe are disposed in the top cowling. A fan is provided above the catalyst. As a result of this unique structure, a temperature increase in the cowling is prevented from being caused by heat radiated from the catalyst.
    Type: Grant
    Filed: February 24, 2009
    Date of Patent: August 23, 2011
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventor: Katsumi Ochiai
  • Patent number: 7938704
    Abstract: A hook assembly is arranged to engage with an engaged member to fix a first housing to a second housing of an outboard motor. The hook assembly includes a rotation shaft, a hook member, a lever, and a weight. The rotation shaft is rotatably mounted on the first housing. A recessed portion is provided in the hook member. The recessed portion is arranged to open in first rotation direction. The recessed portion engages with the engaged member. The lever extends from the rotation shaft in a second rotation direction opposite to the first rotation direction of the recessed portion. The weight regulates the rotation of the hook member in the second rotation direction when the hook member and the engaged member are engaged together. The arrangement provides a highly-operable hook assembly for the outboard motor that prevents disengagement even when an obstacle collides with the outboard motor during traveling of a boat.
    Type: Grant
    Filed: April 8, 2009
    Date of Patent: May 10, 2011
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventors: Kohei Nomura, Hiroyuki Hasegawa
  • Patent number: 7883385
    Abstract: An outboard motor having an engine cover formed from a lower cover fixed to a casing and an upper cover joined to the lower cover at a first mating surface. A linear member lead-out part is formed from a case part integrally connected to the lower cover. The linear member lead-out part is closer to one side wall and projects forward from a front wall of the lower cover. A lid member is joined to the case part by a second mating surface disposed below the first mating surface. A water entrance chamber is formed in the lower cover and has front and rear walls defined by a pair of wall portions integrally provided with the lower cover while being spaced in a fore-and-aft direction. The water entrance chamber is disposed on the side on which a small gap is formed between the lid member and the lower cover.
    Type: Grant
    Filed: January 26, 2009
    Date of Patent: February 8, 2011
    Assignee: Honda Motor Co., Ltd.
    Inventor: Koji Sakamoto
  • Patent number: 7867047
    Abstract: An outboard motor intake port system includes an internal cover mounted, from the inside, on an engine cover to form an intake chamber between the internal cover and the engine cover. The internal cover is integrally provided with a bottom plate portion facing the inner face of an upper part of the engine cover, a front wall portion extending upward from a front edge of the bottom plate portion and connected to the inner face of the upper part of the engine cover, and a pair of tubular portions extending upward from the bottom plate portion. The pair of tubular portions are arranged side by side so water that has entered the intake chamber via an intake port passes through the tubular portions. A pair of drain holes for discharging water are formed in the engine cover and communicate with the left and right front parts of the intake chamber.
    Type: Grant
    Filed: January 30, 2009
    Date of Patent: January 11, 2011
    Assignee: Honda Motor Co., Ltd.
    Inventor: Koji Sakamoto
  • Patent number: 7841600
    Abstract: A seal member seals a gap between upper and lower cover members of an engine cover of an outboard motor. The seal member includes a supporting portion and a sealing portion integral with the supporting portion. The supporting portion has such a high spring modulus that the supporting portion is not plastically deformed with a load is applied to the supporting portion when the upper cover member is locked to the lower cover member. The sealing portion is hollow and has such a small spring modulus that the sealing portion can readily flex into close contact with the upper and lower cover members so as to provide an improved seal between the upper and lower cover members.
    Type: Grant
    Filed: February 16, 2007
    Date of Patent: November 30, 2010
    Assignee: Honda Motor Co., Ltd.
    Inventors: Kunihiro Kitsu, Makoto Yazaki
  • Publication number: 20100285705
    Abstract: An air intake passage system includes an external air intake port provided in a rear portion of a top cover and a cylinder section projecting upwardly from the engine cover for directing taken-in external air to the engine. The top cover is provided over the engine cover with a gap therebetween such that the taken-in external air is allowed to flow into the cylinder section and a water discharge section is provided between the engine cover and the top cover. Water, having entered together with external air, flows along the upper surface of the engine cover, bypasses the cylinder section and is then discharged via the water discharge section.
    Type: Application
    Filed: May 5, 2010
    Publication date: November 11, 2010
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Akiko Ichikawa, Koji Sakamoto
  • Patent number: 7806741
    Abstract: An outboard motor is provided with two distinct and separate streams of air flowing through its cowl structure. One stream of air is intended to cool various heat emitting components under the cowl and the other stream of air is intended to provide required air for combustion within the cylinders of the engine. The two streams of air flow along first and second flow paths which are maintained in isolation with respect to each other so that the air in the two streams of air are not mixed together. In that way, heat is prevented from decreasing the density of the air stream flowing into the cylinders for combustion within the engine.
    Type: Grant
    Filed: February 11, 2009
    Date of Patent: October 5, 2010
    Assignee: Brunswick Corporation
    Inventors: Mark A. Baier, Brad Van Ruiswyk, John D. Skroski, John A. Bauer
  • Patent number: 7736207
    Abstract: A marine outboard engine for a watercraft is disclosed. The marine outboard engine features a padded section adapted to provide a padded area for carrying the outboard engine over the shoulder of a person.
    Type: Grant
    Filed: July 11, 2008
    Date of Patent: June 15, 2010
    Assignee: BRP US Inc.
    Inventor: Pierre Vignau
  • Patent number: 7704109
    Abstract: A mounting structure for cables for a boat propulsion unit that enables easy insertion of cables into a pass-through hole, as well as highly reliable water-sealing is provided in a bottom cowling of the boat propulsion unit. The cables are inserted in through-holes in a rubber grommet by opening up a slit in the rubber grommet, and then inserting the rubber grommet in a pass-through hole in the port section. The rubber grommet is fit into the pass-through hole in the pressurized condition to water-seal the pass-through hole. The pass-through hole is molded integrally with the bottom cowling. A retaining plate is wrapped around the rubber grommet to prevent the slit from opening up, and the grommet is accommodated in the pass-through hole together with the retainer plate. Then, the retainer plate is fastened to the port section by mounting bolts. Thus, the rubber grommet is fixed within the pass-through hole, and provides water-sealing by filling the gap around the cables within the pass-through hole.
    Type: Grant
    Filed: February 6, 2008
    Date of Patent: April 27, 2010
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventors: Hideto Arai, Hiroyuki Hasegawa
  • Publication number: 20090318038
    Abstract: In cowling structure for an outboard motor, a through hole is formed below an upper-cowling joining surface of a lower cowling; control cables are supported with a cable supporting groove of a back side plate, and the back side plate is fixed to the through hole; a sealing member that is covered on the outside of the control cables, is fitted into the through hole; a groove of a front side plate is placed around the control cables, and the front side plate is set onto the sealing member; and the sealing member is fixed to the lower cowling by a bolt together with the front side plate. The cowling structure for an outboard motor can prevent water intrusion by removing a notch on an upper-cowling joining surface of a lower cowling.
    Type: Application
    Filed: June 16, 2009
    Publication date: December 24, 2009
    Applicant: Yamaha Hatsudoki Kabushiki Kaisha
    Inventors: Hiroyuki HASEGAWA, Kohei NOMURA
  • Patent number: 7621791
    Abstract: In an outboard engine unit, a cover assembly, defining a lower half section of an engine room, is composed of left and right cover members each formed of resin, and a bracket is fixed to a rear portion of the engine or engine support structure. The left and right cover members are fixed at their respective rear portions to the bracket. Centerline of an engine cylinder is offset from a centerline of the engine room toward one of left and right sides of the unit, and an ignition plug is provided on the other side opposite from the one side toward which the engine cylinder centerline is offset.
    Type: Grant
    Filed: April 19, 2007
    Date of Patent: November 24, 2009
    Assignee: Honda Motor Co., Ltd.
    Inventors: Makoto Yazaki, Kunihiro Kitsu, Toru Kimura, Masanori Tsubouchi
  • Publication number: 20090215333
    Abstract: An engine is disposed in a top cowling. Burned gas produced in the engine is discharged to the outside through a first exhaust pipe, a second exhaust pipe, a third exhaust pipe, exhaust passage, and a exhaust passage. A catalyst is disposed to be housed in the first exhaust pipe and the second exhaust pipe. The first exhaust pipe and the second exhaust pipe are disposed in the top cowling. A fan is provided above the catalyst. As a result of this unique structure, a temperature increase in the cowling is prevented from being caused by heat radiated from the catalyst.
    Type: Application
    Filed: February 24, 2009
    Publication date: August 27, 2009
    Applicant: YAMAHA HATSUDOKI KABUSHIKI KAISHA
    Inventor: Katsumi OCHIAI
  • Patent number: 7540794
    Abstract: A sealing structure of an outboard motor includes a bottom cowling covering a lower part of an engine, a top cowling covering an upper part of the engine, and a sealing material via which the top cowling is coupled to the bottom cowling. The sealing material includes an installation base member fitted on the bottom cowling. The installation base member has a roughly U-shaped cross-section with an opening into which the top end of the bottom cowling is inserted. A hollow seal member is provided on an outer wall of the installation base member and makes elastic contact with an inner surface of the bottom end of the top cowling. A lip projects outward from the hollow seal member. An upper surface of the lip makes elastic contact with a bottom surface of the bottom end of the top cowling.
    Type: Grant
    Filed: December 4, 2007
    Date of Patent: June 2, 2009
    Assignees: Nishikawa Rubber Co., Ltd., Yamaha Hatsudoki Kabuhsiki Kaisha
    Inventors: Kazuhiko Inoue, Yu Ito