Patents Represented by Attorney Ernest A. Beutler

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  • Power transmission system for snowmobile
    Patent number: 5279381
    Abstract: A snowmobile having an improved power transmission system that is comprised of a split engine having two cylinder blocks each containing at least a pair of cylinders with their output shafts connected to each other. A belt drive shaft is journaled by the engine assembly and is driven off the output shafts at the point where they are joined together. The belt drive shaft drives the drive belt of the snowmobile through a variable pulley transmission.
    Type: Grant
    Filed: January 13, 1992
    Date of Patent: January 18, 1994
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventor: Kazutaka Fukuda
  • Remote control system
    Patent number: 5280282
    Abstract: A remote control system for transmitting control movement to a controlled member, such as a throttle or transmission control lever on a marine propulsion unit, which includes an actuator unit having a lever arm for mechanically actuating the controlled member and an electric motor for electrically actuating the controlled member. A first remote control unit is provided which has a first operator mechanically connected to the lever arm for selectively transmitting movement to the lever arm upon movement of the first operator. There is also provided a second remote control unit having a second operator electrically connected to the electric motor through a central control unit for selectively transmitting an electrical signal to the central control unit for selectively transmitting movement to the electric motor upon movement of the second operator.
    Type: Grant
    Filed: February 28, 1991
    Date of Patent: January 18, 1994
    Assignee: Sanshin Kogyo Kabushiki Kaisha
    Inventors: Makoto Nagafusa, Shinji Yoshida
  • Spring suspension device
    Patent number: 5279383
    Abstract: A suspension in a motorcycle or similar vehicle having a frame relative to which a rear fork with a rear wheel is moveable. The suspension is characterized by an elongated composite spring mounted at the front end on the lower front part of the frame and loaded at the rear end by one end of a link member the other end of which is mounted on the rear fork. The frame is provided on its underside with at least one deflecting member which is arranged in such a manner that it bears against the composite spring upon a relative low loading of the rear fork relative to the frame to change the spring rate.
    Type: Grant
    Filed: September 18, 1992
    Date of Patent: January 18, 1994
    Assignee: Ohlins Racing AB
    Inventor: Leif Gustafsson
  • Ignition system for multi-valve engine
    Patent number: 5279274
    Abstract: An ignition system for a multi-valve internal combustion engine wherein the valves all reciprocate about acute angles to a plane containing the cylinder bore axis and wherein a spark plug is positioned in a generally parallel extending direction to the plane and is offset slightly toward the side of the plane containing the most valves. A spark coil is affixed to the terminal end of the spark plug and is itself offset to the other side of the plane to nest between the two poppet valves and provide a compact, low volume combustion chamber and a compact, low height engine arrangement.
    Type: Grant
    Filed: May 4, 1993
    Date of Patent: January 18, 1994
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventor: Masaaki Yoshikawa
  • Device for protecting oxygen sensor of motocycle
    Patent number: 5271480
    Abstract: An exhaust system for a motorcycle that includes an exhaust sensor that extends into the exhaust system at a low point in the motorcycle. A plurality of baffles are positioned around the exhaust sensor so as to protect its extending portion from damage from foreign objects.
    Type: Grant
    Filed: June 3, 1992
    Date of Patent: December 21, 1993
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventor: Masaki Takegami
  • Oxygen sensor layout
    Patent number: 5271477
    Abstract: A motorcycle having an exhaust system with a sensor in the exhaust system for engine control. The sensor is located so that it will be protected by the exhaust device into which it protrudes and by other portions of the motorcycle. The exhaust system includes a plurality of exhaust pipes and the exhaust device and one of these exhaust pipes is readily removable from a unitary assembly comprised of the remaining exhaust pipes and exhaust device so that an adjacent component of the motorcycle can be easily serviced.
    Type: Grant
    Filed: February 12, 1992
    Date of Patent: December 21, 1993
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventors: Ryoichi Gekka, Masaki Takegami, Tomokazu Ito, Akira Yokoo
  • Fuel injection system for engine
    Patent number: 5271358
    Abstract: A fuel injection system for engines that employs a fuel injector that sprays into a chamber to which compressed air is delivered and which chamber communicates with the combustion chamber through a port that is opened and closed by the reciprocation of the piston in a reciprocating engine. The source of compressed air may either be an air compressor or a crankcase chamber of the engine and the air compressor and/or crankcase chamber may also provide scavenging air for the engine. A variety of port arrangements are disclosed which include either single ports or a plurality of ports either circumferentially or axially spaced from each other and disposed between either the scavenge ports and exhaust ports or around a scavenge port or an exhaust port. Various arrangements are disclosed for improving the vaporization of the fuel in the chamber in which it is injected.
    Type: Grant
    Filed: March 18, 1992
    Date of Patent: December 21, 1993
    Assignee: Sanshin Kogyo Kabushiki Kaisha
    Inventors: Masahiko Katoh, Masanori Takahashi
  • Fuel injected engine
    Patent number: 5269243
    Abstract: A motorcycle powered by a two cycle crankcase compression fuel injected internal combustion engine. The injection system for the engine includes a main fuel air/injector that injects fuel directly into the combustion chamber and a second or auxiliary fuel injector that injects fuel into the induction system for the engine. Control means control the fuel injectors so that the second or auxiliary fuel injector supplies fuel only during starting and high load, high speed conditions. The engine components are laid out in such a way that the spark plugs of the engine and the fuel injector will each be exposed to unobstructed air flow for cooling.
    Type: Grant
    Filed: October 28, 1991
    Date of Patent: December 14, 1993
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventor: Norihisa Mochizuki
  • Steering device for marine propulsion device
    Patent number: 5266060
    Abstract: The present invention provides an improved apparatus for controlling the steering of a watercraft or the like. Specifically, the steering device of the invention includes a push-pull cable steering arrangement which has a portion located along the rear of the watercraft. Such rearward portion is disposed for reciprocal movement within a cylindrical cable guide. The steering device also includes a hydraulic power assist arrangement which includes a hydraulic cylinder having a moveable piston and associated piston rod contained therein. Operator initiated movement of the push-pull cable arrangement is operable to actuate the hydraulic power assist arrangement, thus aiding in steering maneuvers. In order to provide an exceptionally compact arrangement, the cylindrical cable guide of the push-pull cable steering arrangement is disposed inside of the hydraulic cylinder of the hydraulic power assist arrangement.
    Type: Grant
    Filed: February 13, 1992
    Date of Patent: November 30, 1993
    Assignee: Sanshin Kogyo Kabushiki Kaisha
    Inventor: Akihiro Onoue
  • Motorcycle frame construction
    Patent number: 5261504
    Abstract: Two embodiments of motorcycles having improved frame constructions that are comprised of a head pipe and a pair of downwardly and rearwardly extending main frame members. The frame is further reinforced against loads from the front wheel by means of a center main frame member that is affixed to the head pipe at a point below the pair of main frame members and extends rearwardly therefrom at a different angle from the pair of main frame members but which is affixed to the pair of main frame members by a reinforcing cross member.
    Type: Grant
    Filed: November 20, 1992
    Date of Patent: November 16, 1993
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventor: Takehisa Katsura
  • Throttle opening control device for marine propulsion device
    Patent number: 5261844
    Abstract: The present invention provides an improved throttle opening control device for a marine propulsion arrangement. The invention allows an operator of a marine propulsion unit to shift from a forward or reverse operating state into neutral, in order to start or restart an engine, or to effect an urgent transmission shift change during operation, without having to execute an independent step of separately reducing the throttle opening beforehand. According to the present invention, the angle of throttle opening is automatically controlled by an interconnection to the transmission shifting system of the propulsion arrangement.
    Type: Grant
    Filed: February 13, 1992
    Date of Patent: November 16, 1993
    Assignee: Sanshin Kogyo Kabushiki Kaisha
    Inventor: Yasuhiko Shibata
  • Control for jet propulsion unit of watercraft
    Patent number: 5261841
    Abstract: A watercraft having a jet propulsion unit that is supported at least in part within a tunnel on the under side of the hull and which is movable between a driving position and a service position. The control for operating the jet propulsion unit to move it between its positions is disposed within the tunnel and accessible through a service opening so that it cannot be accidentally actuated.
    Type: Grant
    Filed: February 4, 1992
    Date of Patent: November 16, 1993
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventor: Hirofumi Imaeda
  • Outboard motor
    Patent number: 5261356
    Abstract: A supercharged outboard motor including a water cooling jacket that encircles the supercharger and also the duct which interconnects the supercharger with the engine for cooling of the supercharger and compressed air charge without necessitating a separate intercooler.
    Type: Grant
    Filed: October 8, 1992
    Date of Patent: November 16, 1993
    Assignee: Sanshin Kogyo Kabushiki Kaisha
    Inventors: Masanori Takahashi, Masahiko Katoh
  • Trim/tilt device for marine propulsion unit
    Patent number: 5261843
    Abstract: Two embodiments of concentric tilt and trim cylinder arrangements for machine propulsion units for achieving trim and tilt-up operation. Each embodiment includes an arrangement that permits the outboard drive to pop up when an underwater obstacle is struck, but which preclude popping up operation when operating in reverse. In addition, one embodiment incorporates an arrangement for ensuring against inadvertent trim up when trim down is being called for.
    Type: Grant
    Filed: June 24, 1992
    Date of Patent: November 16, 1993
    Assignee: Sanshin Kogyo Kabushiki Kaisha
    Inventors: Eiichiro Tsujii, Yoshiyuki Katsumata
  • Engine output drive arrangement
    Patent number: 5259347
    Abstract: Two embodiments of compact engine assemblies wherein the engine output shaft drives a driveshaft to which a flywheel is affixed. The flywheel is positioned closely adjacent one end of the engine output shaft and the engine output shaft drives the driveshaft by a gear drive that is positioned between the end main bearing of the engine output shaft and the first adjacent intermediate main bearing for limiting torsional stresses on the driveshaft.
    Type: Grant
    Filed: June 17, 1992
    Date of Patent: November 9, 1993
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventors: Manabu Kobayashi, Keitaroh Hayashi
  • Engine construction for vehicle
    Patent number: 5257674
    Abstract: A vehicle and drive unit therefor including a transversely disposed engine located in an engine compartment. The engine is of the dry sump lubrication type and has a lubricant reservoir that extends between the cylinders and an air inlet opening to the engine compartment. The cylinders are inclined to the rear from a vertical plane at an acute angle and the engine crankshaft drives an output shaft that rotates in a plane disposed at an acute angle to the vertical and forwardly of the cylinder axis and at an acute angle to the cylinder axis. The oil scavenge and pressure pumps are driven from this shaft as are the front wheel axles which lie on the opposite side of the plane containing the cylinder axis from the output shaft axis.
    Type: Grant
    Filed: February 16, 1993
    Date of Patent: November 2, 1993
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventors: Kaoru Okui, Manabu Kobayashi
  • Water jet propulsion unit
    Patent number: 5256089
    Abstract: Several embodiments of water jet propulsion units that are manually moveable between a downwardly facing in-the-water position and a raised, out-of-the water position. The movement includes pivotal movement about a transversely extending horizontal pivot axis and rotation about a longitudinally extending rotational axis. Latching apparatus are disclosed for holding the jet propulsion unit in at least one of its positions and in one embodiment the latching apparatus is effective to hold the jet propulsion unit in each position.
    Type: Grant
    Filed: September 9, 1991
    Date of Patent: October 26, 1993
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventors: Noboru Kobayashi, Hirofumi Imaeda
  • Intake air control system for the engine
    Patent number: 5255649
    Abstract: A number of embodiments of intake passages for internal combustion engines wherein it is possible to obtain a tumble and tumble and swirl action or both under some running conditions and substantially unrestricted flow under high speed conditions so as to improve volumetric efficiency while, at the same time, increasing turbulence under the conditions when the flow pattern is altered. The flow pattern is controlled by a rectifier plate which extends through at least one of the intake passages and divides it into two flow areas, one of which is closed by a control valve which engages the rectifier plate in its flow controlling position so as to provide a stop for the control valve. The control valve is configured and oriented so as to provide substantially unrestricted flow paths in each of its positions. Embodiments incorporating carbureted and fuel injected engines are depicted.
    Type: Grant
    Filed: June 3, 1992
    Date of Patent: October 26, 1993
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventor: Yoshiharu Isaka
  • Watercraft
    Patent number: 5255625
    Abstract: A number of embodiments of watercraft of the type having a main hull which is generally devoid of any independent power unit and which defines a berthing area that is adapted to receive a smaller jet propelled watercraft for propelling the main hull. The berthing area of the main hull is defined by an opening that registers with the opening of the jet propulsion unit of the smaller watercraft in such a way so as to avoid turbulence. The lower wall and the smaller watercraft hull have complimentary configurations so as to assure good support but in one embodiment a plurality of smaller openings are provided so as to permit water to enter any voids and avoid cavitation of the smaller watercraft's jet propulsion unit in operation. A combined ladder and hold down assembly is also disclosed for holding the smaller watercraft in the berthing area and for facilitating boarding of the main hull.
    Type: Grant
    Filed: March 25, 1992
    Date of Patent: October 26, 1993
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventor: Toshiyuki Hattori
  • Dispensing gun
    Patent number: D343103
    Type: Grant
    Filed: February 25, 1992
    Date of Patent: January 11, 1994
    Assignees: Enzacor Australia Pty Ltd., Portland Surgical Products Pty Ltd.
    Inventor: Philip Bunce