Patents Assigned to Sanshin
  • Outboard motor engine
    Patent number: 5461940
    Abstract: A balancing arrangement for a reciprocating machine such as an internal combustion engine employed in the powerhead of an outboard motor. The balancing arrangement includes a balancing shaft rotatably journalled at the interface between the cylinder block and crankcase and which is offset to one side of the crankshaft from which it is driven. The balancer shaft has balancing masses which pass between the cheeks of the throws of the crankshaft during rotation so as to provide a compact assembly.
    Type: Grant
    Filed: October 29, 1993
    Date of Patent: October 31, 1995
    Assignee: Sanshin Kogyo Kabushiki Kaisha
    Inventor: Toshimasa Morita
  • Fuel injection system for engine
    Patent number: 5450830
    Abstract: A fuel injection system for an internal combustion engine is provided wherein fuel supply compensation for low speed, low load or abnormal conditions is variable for a multi-cylinder configuration having one or more cylinders ceased or reduced in operation. Of particular utility in a vertical cylinder bank with compact space for exhaust gas collection and discharge, such as in an outboard motor, said fuel compensation relies upon engine parameters including engine speed and fuel-air ratio to improve engine performance.
    Type: Grant
    Filed: December 21, 1993
    Date of Patent: September 19, 1995
    Assignee: Sanshin Kogyo Kabushushiki Kaisha
    Inventor: Masahiko Katoh
  • Control device for fuel injection system
    Patent number: 5450828
    Abstract: Embodiments of engine speed control and methods of maintaining engine speed control and fuel injection so as to minimize hunting and improve exhaust emission control, particularly at low speeds. This is achieved by setting a fixed amount of fuel supplied to the engine per cycle, per cylinder when the engine speed is below a predetermined speed or a speed below a predetermined speed is called for. Engine speed control is maintained under the constant fuel position by controlling the spark advance in one embodiment. A manual spark advance and automatic spark advance are depicted.
    Type: Grant
    Filed: June 29, 1993
    Date of Patent: September 19, 1995
    Assignee: Sanshin Kogyo Kabushiki Kaisha
    Inventors: Osamu Sakamoto, Chitoshi Saito
  • Fuel supply system for an engine
    Patent number: 5450831
    Abstract: A fuel delivery system for an engine having multiple, vertically spaced charge formers, and the system is provided with a fuel conduit arrangement so that the individual conduits serving the individual charge formers are kept relatively short in length, but the conduits are interconnected in such a way that any vapor which may form in the conduits will flow vertically upwardly for purging from the system.
    Type: Grant
    Filed: September 8, 1994
    Date of Patent: September 19, 1995
    Assignee: Sanshin Koygo Kabushiki Kaisha
    Inventor: Yoshihito Fukuoka
  • Shifting mechanism for outboard drive
    Patent number: 5449306
    Abstract: A shifting mechanism for an outboard drive of a watercraft provides reduced coupling shock when the forward gears are engaged by a dual clutch assembly, as well as provides for consistent and quick engagement of the clutch assembly with the gear. The shifting mechanism involves a first gear and a corresponding first clutch, and a second gear and a corresponding second clutch. A plunger carries the first and second clutches which are arranged on the plunger at unequal distances from their respective gears. This nonuniform spacial relationship between the clutches and gears causes one clutch to engage its corresponding gear before the other clutch engages its corresponding gear. The staggered engagement decreases shock on the transmission and permits quicker engagement between the clutches and gears.
    Type: Grant
    Filed: November 29, 1993
    Date of Patent: September 12, 1995
    Assignee: Sanshin Kogyo Kabushiki Kaisha
    Inventors: Yoshikazu Nakayasu, Akihiro Onoue
  • Power steering system for watercraft
    Patent number: 5447456
    Abstract: A hydraulic steering system for a marine propulsion outboard drive that includes a manually operated bypass passage interposed between the fluid chambers of the hydraulic steering motor so as to facilitate manual steering of the outboard drive.
    Type: Grant
    Filed: January 28, 1994
    Date of Patent: September 5, 1995
    Assignee: Sanshin Kogyo Kabushiki Kaisha
    Inventor: Yoshikazu Nakayasu
  • Shift assistor for outboard drive shifting mechanism
    Patent number: 5445546
    Abstract: A shift assistor for a shifting mechanism of a watercraft outboard drive provides a simply structured and compact device which establishes engagement of the transmission under a resilient force and disengagement under a positive force. The shift assistor includes a shift plunger which is coupled to a shift operator and an actuator casing which is coupled to the transmission. A detent coupling is directly operable between the plunger and the casing to couple the plunger to the casing when the transmission is engaged either in the forward or reverse drive directions, and to release the plunger from the casing when the transmission is disengaged.
    Type: Grant
    Filed: January 24, 1994
    Date of Patent: August 29, 1995
    Assignee: Sanshin Kogyo Kabushiki Kaisha
    Inventor: Daisuke Nakamura
  • Catalyzer support system for exhaust cleaning of outboard motor
    Patent number: 5439651
    Abstract: A catalytic exhaust treatment system for an outboard motor wherein a catalyst bed is supported within the exhaust pipe on a support plate that permits the catalyst bed to expand and contract relative to the surrounding exhaust pipe from which it is spaced. The exhaust gases can flow through the catalyst bed and, around the catalyst bed for complete treatment.
    Type: Grant
    Filed: September 24, 1993
    Date of Patent: August 8, 1995
    Assignee: Sanshin Kogyo Kabushiki Kaisha
    Inventor: Masahiko Kato
  • Cooling system for outboard motor
    Patent number: 5439404
    Abstract: A cooling system for an outboard motor and specifically for the lubricating reservoir thereof. The lubricating reservoir depends into the drive shaft housing and is surrounded by an open trough-like water manifold to which cooling water is delivered from the engine. This manifold has lower restricted openings that direct the coolant to the outer peripheral wall of the oil pan of the lubricant reservoir. The water level is maintained by a weir-like structure and the water that overflows the weir is also directed toward the outer surface of the lubricant reservoir.
    Type: Grant
    Filed: September 13, 1994
    Date of Patent: August 8, 1995
    Assignee: Sanshin Kogyo Kabushiki Kaisha
    Inventor: Yukio Sumigawa
  • Water cooled engine
    Patent number: 5438962
    Abstract: A water cooled outboard motor engine including several embodiments of ensuring that the fuel pumped by the fuel pump is not heated excessively. The embodiments include either cooling jackets through which engine coolant is circulated for cooling the fuel, or the insulation of the pumping element driven by the engine from the fuel.
    Type: Grant
    Filed: March 29, 1994
    Date of Patent: August 8, 1995
    Assignee: Sanshin Kogyo Kabushiki Kaisha
    Inventors: Yoshibumi Iwata, Akihiko Hoshiba, Junichi Hasegawa, Yasuhiko Shibata
  • Exhaust treatment for outboard motor
    Patent number: 5433634
    Abstract: An exhaust system for a marine propulsion outboard drive wherein the exhaust gases are normally discharged to the atmosphere at a point below the level of the body of water in which the watercraft is operating. A catalyst bed is provided in the exhaust system and the catalyst bed is protected from damage by pumping water from the exhaust conduit in response to certain conditions. These conditions may be either rapid deceleration of the engine or watercraft, stopping of the engine, or any of a combination of sensed factors. The water is pumped by a water pump which is positioned either in the outboard drive or in the hull of the associated watercraft. The pumping of water is initiated for only a predetermined time or until the sensed condition no longer is existent.
    Type: Grant
    Filed: December 14, 1993
    Date of Patent: July 18, 1995
    Assignee: Sanshin Kogyo Kabushiki Kaisha
    Inventors: Manabu Nakayama, Atsushi Isogawa
  • Outboard motor
    Patent number: 5425336
    Abstract: Two embodiments of flexible transmitter tensioning devices that afford a screw threaded operation for moving an idler pulley to vary the adjustments. The construction lends itself to incorporation in an outboard motor.
    Type: Grant
    Filed: January 13, 1994
    Date of Patent: June 20, 1995
    Assignee: Sanshin Kogyo Kabushiki Kaisha
    Inventor: Manabu Nakayama
  • Steering handle
    Patent number: 5421755
    Abstract: Several embodiments of steering controls for connection to larger displacement outboard motors that are normally remotely controlled. Each tiller assembly includes at least a throttle control that is connected to the throttle control cable of the outboard motor and a transmission control that is connected to the transmission control cable of the outboard motor. In addition, embodiments of interlocks are depicted that are supported in the tiller assembly and which control the maximum speed of the engine when the transmission is in neutral or reverse and which also prevents shifting into these speeds when the outboard motor is being operated at speeds higher than the those maximum permitted in their respective transmission speeds.
    Type: Grant
    Filed: October 25, 1993
    Date of Patent: June 6, 1995
    Assignee: Sanshin Kogyo Kabushiki Kaisha
    Inventor: Toshihiro Kakizaki
  • Method of manufacturing fiber reinforced inorganic hardened body
    Patent number: 5415821
    Abstract: A fiber reinforced inorganic hardened body is manufactured from raw material including of a mixture of reinforcing fiber such as bamboo fiber, water-hardening inorganic binder and water by a manufacturing apparatus for stirring and mixing such raw material and forming it into a mat configuration laminated with the thin layers of fine fibers on the both front and rear sides of the thick layer of the normal raw material. The fine fiber material adhered with the water-hardening binder is partially separated from the main raw material at both the material supply side and material discharge side of a pin-type roll set. The portion of the fine fiber separated from the main raw material is first supplied to the upstream side of of the forming conveyor to form a first layer of fine fiber.
    Type: Grant
    Filed: October 12, 1993
    Date of Patent: May 16, 1995
    Assignees: Ask Corporation, Sanshin Thermal Insulation Co., Ltd.
    Inventors: Shoichiro Irie, Motonobu Abe, Norihito Akiyama
  • Vessel speed measuring system for the marine propulsion machine
    Patent number: 5412984
    Abstract: The present invention details several embodiments of a vessel speed measuring and indicating system, having a pressure intake port within a leading edge of a lower outboard portion of a vessel propulsion arrangement, which is structured to prevent debris, such as driftwood or the like, from entering and becoming lodged within the pressure intake port during operation of the vessel, so that the vessel speed can be accurately measured and displayed. The constructions detailed herein include a projection which is formed in the vicinity of the pressure intake port. The projection may be slightly above the pressure intake port, below the pressure intake port, or both above as well as below the pressure intake port.
    Type: Grant
    Filed: March 20, 1992
    Date of Patent: May 9, 1995
    Assignee: Sanshin Kogyo Kabushiki Kaisha
    Inventor: Ryozo Okita
  • Fuel injection control device for two stroke combustion engine
    Patent number: 5408872
    Abstract: A two cycle, crankcase compression having fuel injection controlled in response to sensed intake air flow. The intake air flow is measured by measuring the crankcase pressure at crank angles corresponding to scavenge port opening and scavenge port closing of the engine. However, the actual angle at which the pressure is measured is adjusted to compensate for delay in the sensor reading and variations in the electric power supplied to the sensor. In addition, an arrangement is shown for protecting the sensor from corrosion.
    Type: Grant
    Filed: June 4, 1993
    Date of Patent: April 25, 1995
    Assignee: Sanshin Kogyo Kabushiki Kaisha
    Inventor: Kimihiro Nonaka
  • Remote control system for marine propulsion unit
    Patent number: 5408230
    Abstract: A remote control system is provided for transmitting control movement from a remote control unit to a controlled element which includes a throttle or transmission control lever on a marine propulsion unit. An operator is associated with the remote control unit and is movable between a plurality of positions. The remote control system further includes a pair of detectors, one in proximity to the remote control unit for transmitting an electrical signal to a controlling unit indicative of the detected position of the operator, and the other positioned in proximity to the controlled element for transmitting an electrical signal to the controlling unit indicative of the detected position of the controlled element.
    Type: Grant
    Filed: January 22, 1991
    Date of Patent: April 18, 1995
    Assignee: Sanshin Kogyo Kabushiki Kaisha
    Inventor: Ryozo Okita
  • Water injection propulsion device
    Patent number: 5405276
    Abstract: Several embodiments of jet propulsion drive units for watercraft wherein the engine outer housing is provided with an integral step down transmission so that the engine can be a high speed, low displacement engine and still drive the jet propulsion unit without causing cavitation. In one embodiment, the transmission is constructed so as to permit the impeller shaft to be positioned in offset relationship to the engine output shaft and in the other embodiment, the shafts are in line with each other.
    Type: Grant
    Filed: September 27, 1993
    Date of Patent: April 11, 1995
    Assignee: Sanshin Kogyo Kabushiki Kaisha
    Inventor: Naoki Kato
  • High pressure fuel feeding device for fuel injection engine
    Patent number: 5404858
    Abstract: An outboard motor having an fuel/air injection system wherein all of the major components of the fuel portion of the fuel/air injection system are contained within a sealed chamber having a fuel drain and the conduits that supply fuel to the fuel injectors are also contained within fuel collecting conduits so that any fuel leaking will not escape back to the atmosphere. In addition, the air pressure supplied to the fuel/air injectors is regulated and the air relieved for pressure regulation is returned to an air inlet device having a baffle for condensing any fuel in the regulated air and returning the condensed fuel to a vapor separator. The engine is of the V type and major components of the fuel/air injection system are positioned in the valley between the cylinder banks.
    Type: Grant
    Filed: October 13, 1992
    Date of Patent: April 11, 1995
    Assignee: Sanshin Kogyo Kabushiki Kaisha
    Inventor: Naoki Kato
  • Outboard motor
    Patent number: D359290
    Type: Grant
    Filed: February 7, 1994
    Date of Patent: June 13, 1995
    Assignee: Sanshin Kosyo Kabushiki Kaisha
    Inventor: Kiminori Takeuchi