Patents by Inventor Noboru Obayashi

Noboru Obayashi 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).

  • Hole plug
    Patent number: 7347655
    Abstract: A hole plug includes a head portion and a foot portion projecting from a back surface of the head portion to be inserted into a hole to be blocked. The foot portion has a cylindrical shape formed of several uprising plates extending from the back surface of the head portion. An engaging step portion is formed at a base end of each uprising plate for holding a rim of the hole to be blocked together with the head portion. A supporting device is formed at an inside of each uprising plate for limiting bending of each uprising plate inwardly in the radial direction.
    Type: Grant
    Filed: September 16, 2003
    Date of Patent: March 25, 2008
    Assignee: Nifco Inc.
    Inventors: Norimasa Nagasawa, Noboru Obayashi
  • Oil separating mechanism and oil separating unit
    Patent number: 6854454
    Abstract: An oil separating mechanism to be attached to a cylinder block having a concave portion includes a cover member for forming a closed space; a partition wall for dividing the closed space into an inner chamber and an outer chamber; a dividing wall for dividing the inner chamber into a first inner chamber and a second inner chamber; a gas inlet for introducing gas into the first inner chamber; a gas outlet for discharging the gas; a first gas port for communicating the first inner chamber with the outer chamber; and a second gas port for communicating the outer chamber with the second inner chamber. The gas introduced into the first inner chamber flows from the first inner chamber to the outer chamber. Then, the gas flowing from the outer chamber to the second inner chamber is discharged through the gas outlet.
    Type: Grant
    Filed: January 8, 2004
    Date of Patent: February 15, 2005
    Assignees: Nifco Inc., Mazda Motor Corporation
    Inventors: Noboru Obayashi, Tomohide Okuta, Nobuhiro Takamatsu, Fusatoshi Tanaka, Megumu Fukushima, Katsunori Kuremiya, Akinori Gondai
  • Oil separating mechanism and oil separating unit
    Publication number: 20040159313
    Abstract: An oil separating mechanism to be attached to a cylinder block having a concave portion includes a cover member for forming a closed space; a partition wall for dividing the closed space into an inner chamber and an outer chamber; a dividing wall for dividing the inner chamber into a first inner chamber and a second inner chamber; a gas inlet for introducing gas into the first inner chamber; a gas outlet for discharging the gas; a first gas port for communicating the first inner chamber with the outer chamber; and a second gas port for communicating the outer chamber with the second inner chamber. The gas introduced into the first inner chamber flows from the first inner chamber to the outer chamber. Then, the gas flowing from the outer chamber to the second inner chamber is discharged through the gas outlet.
    Type: Application
    Filed: January 8, 2004
    Publication date: August 19, 2004
    Applicants: NIFCO INC., MAZDA MOTOR CORPORATION
    Inventors: Noboru Obayashi, Tomohide Okuta, Nobuhiro Takamatsu, Fusatoshi Tanaka, Megumu Fukushima, Katsunori Kuremiya, Akinori Gondai
  • Hole plug
    Publication number: 20040091335
    Abstract: A hole plug includes a head portion and a foot portion projecting from a back surface of the head portion to be inserted into a hole to be blocked. The foot portion has a cylindrical shape formed of several uprising plates extending from the back surface of the head portion. An engaging step portion is formed at a base end of each uprising plate for holding a rim of the hole to be blocked together with the head portion. A supporting device is formed at an inside of each uprising plate for limiting bending of each uprising plate inwardly in the radial direction.
    Type: Application
    Filed: September 16, 2003
    Publication date: May 13, 2004
    Applicant: NIFCO INC
    Inventors: Norimasa Nagasawa, Noboru Obayashi
  • Hole plug
    Patent number: D490767
    Type: Grant
    Filed: May 12, 2003
    Date of Patent: June 1, 2004
    Assignee: Nifco Inc.
    Inventors: Norimasa Nagasawa, Noboru Obayashi
  • Retainer for rubbery articles or the like
    Patent number: D318792
    Type: Grant
    Filed: April 4, 1988
    Date of Patent: August 6, 1991
    Assignees: Nishikawa Rubber Company, Nifco Inc.
    Inventors: Hiroyuki Hamanaka, Noboru Obayashi