Patents by Inventor Chiharu Okawa

Chiharu Okawa 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).

  • Engine with decompression device
    Patent number: 7726271
    Abstract: To suppress the overall length of a camshaft including the length of a decompression device provided in an engine and also to suppress an increase in number of parts of the decompression device, an engine includes a decompression device having a decompression weight pivotably supported through a pivot shaft to a camshaft and adapted to be rotated at a predetermined angle by a centrifugal force generated during the rotation of the camshaft. A weight accommodating portion for pivotably accommodating the decompression weight is formed between the opposite end portions of the camshaft. The outer diameter of the decompression device mounted to the camshaft is smaller than that of a ball bearing. The decompression weight is directly engaged with one end of a decompression camshaft to thereby rotate the decompression camshaft.
    Type: Grant
    Filed: August 6, 2007
    Date of Patent: June 1, 2010
    Assignee: Honda Motor Co., Ltd.
    Inventors: Teruhide Yamanishi, Shuji Hirayama, Yoshitaka Nukada, Chiharu Okawa
  • Engine with decompression device
    Publication number: 20080035089
    Abstract: To suppress the overall length of a camshaft including the length of a decompression device provided in an engine and also to suppress an increase in number of parts of the decompression device, an engine includes a decompression device having a decompression weight pivotably supported through a pivot shaft to a camshaft and adapted to be rotated at a predetermined angle by a centrifugal force generated during the rotation of the camshaft. A weight accommodating portion for pivotably accommodating the decompression weight is formed between the opposite end portions of the camshaft. The outer diameter of the decompression device mounted to the camshaft is smaller than that of a ball bearing. The decompression weight is directly engaged with one end of a decompression camshaft to thereby rotate the decompression camshaft.
    Type: Application
    Filed: August 6, 2007
    Publication date: February 14, 2008
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Teruhide Yamanishi, Shuji Hirayama, Yoshitaka Nukada, Chiharu Okawa