Patents by Inventor Kazuo Uchiyama

Kazuo Uchiyama has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 5848578
    Abstract: A driving arrangement for a motor vehicle having a transversely disposed V-type four camshaft internal combustion engine. The camshafts are all driven in timed relationship with the crankshaft with a first flexible transmitter being operative to drive the intake camshafts of each cylinder bank at the same end of the engine from the crankshaft. The exhaust camshafts of each bank are driven by the intake camshafts at the opposite end of the engine.
    Type: Grant
    Filed: March 22, 1995
    Date of Patent: December 15, 1998
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventors: Kazuo Uchiyama, Takamitsu Suzuki
  • Patent number: 4827879
    Abstract: A V type engine embodying an improved compound manifolding system wherein the manifolding system mates with a horizontally extending surface of each cylinder head with the cylinder heads horizontally extending surfaces lying in the same plane for each of attachment, assembly and fit.
    Type: Grant
    Filed: October 10, 1986
    Date of Patent: May 9, 1989
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventors: Masatoshi Ohmi, Kazuo Uchiyama, Toshihiko Yoneda
  • Patent number: 4702203
    Abstract: An improved induction system for a V type engine that is tuned for substantially all running conditions and which is nevertheless compact in construction. The system includes a pair of air boxes each disposed adjacent one of the cylinder heads of the engine. Each cylinder head has at least two intake passages serving the respective cylinder bores and a first conduit extends from the adjacent air box to one of the intake passages and a second conduit extends from the other of the air boxes to the other intake passage. A throttle valve arrangement is also incorporated so that good performance is achieved under all running conditions.
    Type: Grant
    Filed: October 3, 1986
    Date of Patent: October 27, 1987
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventors: Masatoshi Ohmi, Toshihiko Yoneda, Kazuo Uchiyama
  • Patent number: 4649876
    Abstract: An improved induction system for a V type engine that is tuned for substantially all running conditions and which is nevertheless compact in construction. The system includes a pair of air boxes each disposed adjacent one of the cylinder heads of the engine. Each cylinder head has at least two intake passages serving the respective cylinder bores and a first conduit extends from the adjacent air box to one of the intake passages and a second conduit extends from the other of the air boxes to the other intake passage. A throttle valve arrangement is also incorporated so that good performance is achieved under all running conditions.
    Type: Grant
    Filed: July 26, 1984
    Date of Patent: March 17, 1987
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventors: Masatoshi Ohmi, Toshihiko Yoneda, Kazuo Uchiyama
  • Patent number: 4643143
    Abstract: A driving arrangement for a motor vehicle having a transversely disposed V-type four camshaft internal combustion engine. The camshafts are all driven in timed relationship with the crankshaft with a first flexible transmitter being operative to drive the intake camshafts of each cylinder bank at the same end of the engine from the crankshaft. The exhaust camshafts of each bank are driven by the intake camshafts at the opposite end of the engine.
    Type: Grant
    Filed: April 30, 1985
    Date of Patent: February 17, 1987
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventors: Kazuo Uchiyama, Takamitsu Suzuki
  • Patent number: 4292944
    Abstract: An induction system for an internal combustion engine that improves efficiency through increasing flame propagation at low and medium speeds and loads. This is accomplished through the use of a relatively small cross sectional area auxiliary induction system through which at least a portion of the charge requirements are supplied. The small cross sectional area causes the charging to be introduced at a high velocity, thus increasing turbulence in the intake charge to promote rapid flame propagation when the spark plug is fired. At least a portion of the idle charge is also delivered through the main induction passage so as to reduce the velocity of the intake charge. The charge delivered through the main induction system flows at an angle to that discharged from the auxiliary induction system so that the two flow paths will create internal turbulence due to their different directions.
    Type: Grant
    Filed: February 7, 1980
    Date of Patent: October 6, 1981
    Assignee: Yamaha Hatsukoki Kabushiki Kaisha
    Inventors: Hiromitsu Matsumoto, Keiichi Sugiyama, Kazuo Uchiyama
  • Patent number: 4044080
    Abstract: A carburetor comprising catching means for catching fuel deposited on the inner wall of a main air passage in the form of liquid and then flowing downstream therefrom and a passage means for delivering the liquid fuel thus caught to a carburetor throat, wherein the recovered liquid fuel is again ejected into the main air passage through an opening formed at one end of said passage means by negative pressure in the carburetor throat.
    Type: Grant
    Filed: June 17, 1976
    Date of Patent: August 23, 1977
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventors: Hiromitsu Matsumoto, Kazuo Uchiyama
  • Patent number: RE37798
    Abstract: A driving arrangement for a motor vehicle having a transversely disposed V-type four camshaft internal combustion engine. The camshafts are all driven in timed relationship with the crankshaft with a first flexible transmitter being operative to drive the intake camshafts of each cylinder bank at the same end of the engine from the crankshaft. The exhaust camshafts of each bank are driven by the intake camshafts at the opposite end of the engine.
    Type: Grant
    Filed: March 22, 1995
    Date of Patent: July 23, 2002
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventors: Kazuo Uchiyama, Takamitsu Suzuki