Patents Assigned to Sanshin
  • Patent number: 11325218
    Abstract: Loopback rolls which can transfer and guide a polishing tape (T) along a perimeter of a pressure contact roll (R) is provided, the pressure contact roll having a tapered peripheral edge having a top edge and a pair of slant edge faces formed on a periphery of the pressure contact roll, by which the polishing tape can be bent into a substantially V-shape in cross section, and a switchable pressure contact mechanism is switchably provided which pressure contacts each of bent portions of the polishing tape, which is bent into the substantially V-shape in cross section by the tapered peripheral edge, to one tooth face (B1) or the other tooth face of a worm.
    Type: Grant
    Filed: November 16, 2018
    Date of Patent: May 10, 2022
    Assignee: SANSHIN CO., LTD.
    Inventors: Koji Hosokai, Takayuki Adachi
  • Patent number: 10300575
    Abstract: The invention has a turnback roll which can transfer and guide a polishing tap in a tangential direction of a pressure contacting roll, a vertical oscillation mechanism which linearly oscillates the pressure contacting roll in a tangential direction of a ball groove while being orthogonal to a rotating axis line, and a horizontal oscillation mechanism which linearly oscillates the pressure contacting roll in a direction of a rotating axis line toward both inner side surfaces of the ball groove. The ball groove can be securely polished by the polishing tape on the basis of the continuous or intermittent transfer of the polishing tape and the linear oscillating motion of the ball groove. It is possible to improve a polishing precision, it is possible to improve a surface roughness of the ball groove and it is possible to improve a polishing workability of the ball groove.
    Type: Grant
    Filed: August 21, 2017
    Date of Patent: May 28, 2019
    Assignee: SANSHIN CO., LTD.
    Inventors: Nobukazu Hosokai, Takayuki Adachi
  • Patent number: 9162300
    Abstract: A method for polishing a ball screw comprising a screw shaft defining a screw axis. The screw shaft is formed with a screw groove. The method comprises the steps of: rotating the screw shaft at a rotational speed about the screw axis; conveying a polishing tape having a polishing portion traveled around an outer peripheral surface of a pressing roller, the press roller being configured to rotate about a rotational axis; guiding the polishing tape such that the polishing portion is traveled around the outer peripheral surface; pressing the polishing portion against the screw groove; tilting the pressing roller such that the rotational axis is aligned with a lead angle; oscillating the pressing roller linearly along the rotational axis; moving the polishing tape at a moving speed in a direction parallel to the screw axis; and synchronizing the rotational speed with the moving speed based on a lead.
    Type: Grant
    Filed: August 18, 2014
    Date of Patent: October 20, 2015
    Assignees: SANSHIN CO., LTD., I.D.O CO., LTD.
    Inventors: Nobukazu Hosokai, Mikio Yoshino, Takayuki Adachi
  • Patent number: 8814635
    Abstract: A substrate polishing method includes starting to rotate a circular substrate and polishing an inner peripheral edge surface of a center circular hole formed in the circular substrate into a chamfered or rounded surface by pressing the inner peripheral edge surface against a bypass polishing part of a polishing tape that is conveyed intermittently or continuously and by oscillating the bypass polishing part of the polishing tape about a direction perpendicular to a direction that the center circular hole penetrates through the circular substrate. The polishing tape is guided so as to have an advancing portion advancing toward the circular substrate, a returning portion returning from the circular substrate, and a turning-back portion between the advancing portion and the returning portion guided along a side bypass. The bypass polishing part of the polishing tape is the turning-back portion of the polishing tape.
    Type: Grant
    Filed: January 27, 2011
    Date of Patent: August 26, 2014
    Assignees: Sanshin Co., Ltd., Nihon Micro Coating Co., Ltd.
    Inventors: Nobukazu Hosokai, Isamu Oguro, Jun Watanabe, Tetsujiro Tada
  • Publication number: 20120045968
    Abstract: A substrate polishing method includes starting to rotate a circular substrate and polishing an inner peripheral edge surface of a center circular hole formed in the circular substrate into a chamfered or rounded surface by pressing the inner peripheral edge surface against a bypass polishing part of a polishing tape that is conveyed intermittently or continuously and by oscillating the bypass polishing part of the polishing tape about a direction perpendicular to a direction that the center circular hole penetrates through the circular substrate. The polishing tape is guided so as to have an advancing portion advancing toward the circular substrate, a returning portion returning from the circular substrate, and a turning-back portion between the advancing portion and the returning portion guided along a side bypass. The bypass polishing part of the polishing tape is the turning-back portion of the polishing tape.
    Type: Application
    Filed: January 27, 2011
    Publication date: February 23, 2012
    Applicants: NIHON MICRO COATING CO., LTD., SANSHIN CO., LTD.
    Inventors: Nobukazu HOSOKAI, Isamu OGURO, Jun WATANABE, Tetsujiro TADA
  • Patent number: 7989027
    Abstract: The present invention is intended to provide a metal gasket material plate with which exfoliation of the coating or blister can be prevented even if it is used in the presence of an electrolyte aqueous solution and which can be manufactured through a process without use of hexavalent chromium in consideration of the environment, etc. The present, invention relates to a metal gasket material plate comprising a metal plate 1 having a rubber layer 4 on one side or both sides thereof through an adhesive layer 3, wherein a rust-resistant pigment is added to both of said adhesive layer 3 and said rubber layer 4.
    Type: Grant
    Filed: December 28, 2007
    Date of Patent: August 2, 2011
    Assignees: Nippon Leakless Industry Co., Ltd., Sanshin Industries Co., Ltd., Honda Motor Co., Ltd.
    Inventors: Tsunehiko Abe, Tomokazu Nakanishi, Shingo Watanabe, Yoshiharu Takada, Ichiro Goto, Shinsuke Mochizuki, Kenji Okubo, Yasuaki Nagai
  • Patent number: 7353095
    Abstract: A diagnostic system is provided for a watercraft that is propelled by an outboard drive. Sensors can detect conditions of components related to at least the operation of the outboard drive. The diagnostic system can leave inside and outside computers. The inside computer is placed in the watercraft, while the outside computer is placed out of the watercraft. The outside computer is installed with a program to provide the inside computer with an instruction signal to start a diagnosis on the components. The inside computer is installed with a program to provide sensors with a commencement signal to start checking the components, to require the sensors to provide a detection signal, to collect detection signals, and to provide the outside computer with a result of the checking based upon the detection signals. The program of the outside computer additionally controls a monitor of the outside computer to indicate the conditions of the components based upon the result of the checking.
    Type: Grant
    Filed: September 25, 2002
    Date of Patent: April 1, 2008
    Assignee: Sanshin Kogyo Kabushiki Kaisha
    Inventors: Isao Kanno, Hitoshi Motose
  • Patent number: 7176778
    Abstract: A magnetic core assembly with coils therein has a substantially spherical or ellipsoidal main body defining a hollow space therein. A column is disposed in the main body so as to be aligned with a center line of the main body. The main body is defined by a pair of separated halves. The main body has a slot extending outward form the hollow space, and the slot aligns with a separating plane of the halves. The core assembly has a bobbin that is formed with a barrel wound by the coils, and the barrel has a through hole receiving the column of the core assembly. The bobbin has a retainer plate arranged with terminals for the coils. The retainer plate extends from the main body via the slot. A mounting board for the core assembly is formed with an opening to receive the spherical or ellipsoidal main core body such that the mounting board supports the core body on a periphery of the opening.
    Type: Grant
    Filed: September 30, 2005
    Date of Patent: February 13, 2007
    Assignee: Sanshin Electric, Co., Ltd.
    Inventor: Yuki Satake
  • Patent number: 7004146
    Abstract: An engine of an outboard motor includes a fuel injection system that is configured to increase the accuracy of fuel pressure measurements and more precisely control the amount of fuel injected. In a preferred mode, the fuel injection system can include a pressure dampening device that is connected to the direct fuel injected system. The system can also include a vibration dampening apparatus that protects a pressure sensor from damage that can be caused by engine vibrations.
    Type: Grant
    Filed: August 24, 2000
    Date of Patent: February 28, 2006
    Assignee: Sanshin Kogyo Kabushiki Kaisha
    Inventor: Masahiko Kato
  • Patent number: 6846207
    Abstract: A watercraft is equipped with an outboard motor and an inboard local area network (LAN) that communicates control signals to the outboard motor. An outboard motor operating device retains the ability to operate the outboard motor even if part of the inboard LAN develops an abnormality. In particular, a control signal that controls the outboard motor and a conditional information signal that indicates a condition of the watercraft are transmitted by independent cables that are mutually separated. Even if the cable for transmitting the conditional information signal or equipment connected to the cable develops an abnormality, transmission of the control signal for controlling the outboard motor is not hindered since the control signal is on the other cable, which is not affected by the abnormality. The conditional information signals are processed to generate and display return-to-port warnings based on the watercraft conditions and other operator issued constraints.
    Type: Grant
    Filed: October 30, 2002
    Date of Patent: January 25, 2005
    Assignee: Sanshin Kogyo Kabushiki Kaisha
    Inventors: Hitoshi Motose, Takashi Okuyama
  • Patent number: 6736100
    Abstract: An internal comustion engine has an air induction system that provides an intake passage and an intake silencer, wherein there are a plurality of openings between the silencer and the intake passage. The openings can be selectively closed so as to effectively lengthen or shorten the flow path through the intake passage. upstream portions of the intake passage are disposed within the intake silencer so as to facilitate compactness of the induction system. The openings are closed during low and medium engine speeds, and are opened during high engine speeds.
    Type: Grant
    Filed: December 24, 2001
    Date of Patent: May 18, 2004
    Assignee: Sanshin Kogyo Kabushiki Kaisha
    Inventor: Goichi Katayama
  • Patent number: 6675749
    Abstract: A marine drive has an open loop cooling system for cooling various engine components using water drawn from the body of water in which an associated watercraft is operating. A water inlet of the cooling system has a filter cover which includes a series of apertures through which water can flow. The apertures have a maximum cross-sectional width. After passing through the water inlet, cooling water is pressurized and directed to an engine coolant passage to cool engine components. A pilot water passage branches off of the engine coolant passage and delivers cooling water through peripheral engine components to cool the components. The pilot cooling water is discharged from the marine drive in a pilot water stream that is visible to the operator of the watercraft. No portion of the pilot water passage has a diameter that is less than the maximum dimension of the water inlet filter cover openings.
    Type: Grant
    Filed: March 26, 2002
    Date of Patent: January 13, 2004
    Assignee: Sanshin Kogyo Kabushiki Kaisha
    Inventor: Takayuki Osakabe
  • Patent number: 6645021
    Abstract: A cowling assembly for an outboard motor includes an improved construction that can supply relatively cool air containing little water to the induction device and can also supply air to cool engine components without reducing the charging efficiency. The outboard motor has an engine that includes an air induction device and is enclosed within the cowling. The cowling assembly defines a closed cavity in which the engine is contained and has an air intake system. An air intake duct structure introduces air into the cavity. The intake duct structure includes a plurality of relatively narrow connection passages and has an expansion chamber portion disposed on the downstream side of the passages. Intake noise is reduced by this construction. In one preferred form, the cowling assembly additionally has a second intake system. One or more connection passages communicate with the first air intake system and the second air intake system.
    Type: Grant
    Filed: September 25, 2000
    Date of Patent: November 11, 2003
    Assignee: Sanshin Kogyo Kabushiki Kaisha
    Inventors: Takaji Kawai, Hitoshi Ishida, Masanori Takahashi, Sadato Yoshida, Masaki Okazaki
  • Patent number: 6640768
    Abstract: A lubrication system for a direct injected V-type two-cycle engine is disclosed having a lubricant pump adapted to discharge lubricant into each crankcase chamber of the engine through ports positioned adjacent the downstream side of reed valves of the air intake system. Ports supplying lubricant to cylinders in the right cylinder bank of the engine extend through a left wall of the corresponding crankcase chamber. Ports supplying lubricant to cylinders in the left cylinder bank of the engine extend through a right wall of the corresponding crankcase chamber. During engine assembly, the lubricant pump is manually driven before it is mechanically installed so as to fill the attached supply hoses with lubricant. The pump delivers lubricant to each crankcase chamber at a rate high enough to avoid lubricant carbonization at engine idle and low enough to avoid lubricant resistance to crankshaft rotation, which may make the engine difficult to start.
    Type: Grant
    Filed: May 15, 2000
    Date of Patent: November 4, 2003
    Assignee: Sanshin Kogyo Kabushiki Kaisha
    Inventors: Kazutoshi Takashima, Takao Nagai, Noriyoshi Hiraoka
  • Patent number: 6626714
    Abstract: A marine drive includes an oil pump assembly circumferentially mounted on a rotating shaft. The pump assembly defines a pump chamber. An upper seal member is provided above the pump chamber to effectuate a seal with the shaft so that foreign matter will be inhibited from passing downwardly past the upper seal. An intermediate seal member is provided below the pump chamber and also effectuates a seal with the shaft. The intermediate seal member minimizes leakage of oil from the chamber downwardly past the intermediate seal, and is more specifically directed to inhibit invasion of foreign matter, such as water, upwardly past the seal member. A lower seal member is provided below the intermediate seal member and also effectuates a seal with the shaft. The lower seal member acts as another barrier to inhibit leakage of oil downwardly past the lower seal and invasion of foreign matter upwardly past the lower seal.
    Type: Grant
    Filed: January 31, 2002
    Date of Patent: September 30, 2003
    Assignee: Sanshin Kogyo Kabushiki Kaisha
    Inventor: Toshihiro Nozue
  • Patent number: 6623319
    Abstract: An outboard motor includes a cowling substantially enclosing an engine therein. The engine has an air induction device for introducing air to a combustion chamber, and an exhaust system for communicating exhaust products away from the combustion chamber. The air induction device has an intake opening near a front end of the engine. The cowling has an air inlet at a rear portion of the cowling. An air guide member is disposed between the cowling air inlet and an engine cover, which is positioned atop the engine. The air guide member and engine cover cooperate to direct air toward a rear and center of the engine.
    Type: Grant
    Filed: July 16, 2001
    Date of Patent: September 23, 2003
    Assignee: Sanshin Kogyo Kabushiki Kaisha
    Inventor: Atsushi Isogawa
  • Patent number: 6620006
    Abstract: An outboard motor includes a cowling substantially enclosing an engine therein. A tilt and trim mechanism includes a manually-actuable tilt switch for controlling tilt and trim of the motor. Both the port and starboard sidewalls of the cowling have apertures formed therethrough. The apertures are sized and configured to accomodate a tilt switch. In one embodiment, a tilt switch is arranged in one aperture and a plug is arranged in the other aperture. In another embodiment, tilt switches are arranged in both apertures.
    Type: Grant
    Filed: July 16, 2001
    Date of Patent: September 16, 2003
    Assignee: Sanshin Kogyo Kabushiki Kaisha
    Inventors: Yasuo Suganuma, Akihiro Onoue
  • Patent number: 6565399
    Abstract: A number of embodiments of personal watercraft having catalytic exhaust systems for treating and purifying the exhaust gases. In all of the embodiments, the catalyst is positioned and disposed so as to be protected from water. In addition, arrangements are provided for cooling the catalyst, for circulating ventilating air across it, for isolating it from other components such as the fuel tank, and for permitting its flushing with fresh water after operating in a salt water environment.
    Type: Grant
    Filed: March 8, 2002
    Date of Patent: May 20, 2003
    Assignee: Sanshin Kogyo Kabushiki Kaisha
    Inventors: Ryoichi Nakase, Shigeyuki Ozawa, Hiroaki Fujimoto
  • Patent number: 6561140
    Abstract: An outboard motor includes a housing unit adapted to be mounted on an associated watercraft. An engine is mounted on the housing unit. The housing unit defines a water delivery passage and a water discharge passage. Both the passages communicate with each other through a lower opening. The water delivery passage is arranged to deliver cooling water to the engine. The water discharge passage is arranged to discharge the cooling water from the engine. The discharge passage communicates with a location out of the housing unit through an upper opening. A pressure relief valve unit extends through the lower and upper openings. The pressure relief valve unit allows the cooling water in the delivery passage to move to the discharge passage when a pressure of the delivery passage becomes greater than a preset pressure.
    Type: Grant
    Filed: September 13, 2001
    Date of Patent: May 13, 2003
    Assignee: Sanshin Kogyo Kabushiki Kaisha
    Inventor: Mitsuru Nagashima
  • Patent number: 6557533
    Abstract: An engine includes an air induction system, a fuel supply system, a lubrication system and a ventilation system. The fuel supply system has a fuel reservoir in which a space for fuel vapors is defined. The lubrication system lubricates a component of the engine with lubricant. The ventilation system couples a crankcase of the engine with the air induction system so as to deliver oil vapors in the crankcase to the air induction system. A fuel vapor passage is arranged to couple the space of the fuel reservoir with the ventilation system.
    Type: Grant
    Filed: July 31, 2002
    Date of Patent: May 6, 2003
    Assignee: Sanshin Kogyo Kabushiki Kaisha
    Inventors: Goichi Katayama, Masashi Nonaka, Masaki Okazaki