Patents by Inventor Shoichiro Yokota

Shoichiro Yokota 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: 4576127
    Abstract: A first timing belt transmits rotation of a crankshaft to an exhaust valve operating camshaft whose rotation is in turn transmitted through a second timing belt to an intake valve operating camshaft. A pair of adjusting pulleys are provided which is brought into contact with a tension side section and a slack side section of the second timing belt and movable in unison with each other toward and away from the timing belt sections to vary the lengths of same and thereby vary the phase of the intake valve operating camshaft relative to the exhaust valve operating camshaft in accordance with operating conditions of the engine.
    Type: Grant
    Filed: May 10, 1985
    Date of Patent: March 18, 1986
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Isao Doi, Takashi Mihashi, Shoichiro Yokota
  • Patent number: 4401074
    Abstract: An internal combustion engine includes an intake air passage provided with a throttle valve, and an idling air passage by-passing the throttle valve and provided with an idling air flow rate adjusting device which includes a variable orifice. The orifice is formed by a stationary plate with an opening, and a movable plate in contact with and slidably movable with respect to the stationary plate. The two plates consist of this sheet material to prevent accumulation onto the surface of the orifice, of dust and oil particles contained in the intake air. The device further includes an adjusting screw connected to the movable plate to move the same with respect to the stationary plate to thereby adjust the opening degree of the opening in the stationary plate.
    Type: Grant
    Filed: July 20, 1981
    Date of Patent: August 30, 1983
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Tomofusa Horiuchi, Shoichiro Yokota