Patents by Inventor Yasuo Muraoka

Yasuo Muraoka 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: 5407239
    Abstract: A bumper beam for a vehicle bumper, having a base beam preferably made of an extruded aluminum alloy, and an impact beam attached to an outer surface of the base beam with these members joined together by sliding engagement in an axial direction of the base beam. The bumper beam and the impact beam can be made of straight linear members each having a relatively small cross sectional area. In particular, the base beam may have a pair of vertically spaced identical members extending in a mutually parallel relationship which are joined together by the impact beam.
    Type: Grant
    Filed: November 24, 1992
    Date of Patent: April 18, 1995
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Takeo Arai, Yasuo Muraoka, Fumiaki Fukuchi
  • Patent number: 4909861
    Abstract: An aluminum alloy sheet according to the present invention essentially consists of an aluminum alloy containing 0.5 to 1.4% magnesium, 0.6 to 1.5% silicon, and 0.005 to 0.1% titanium, all by weight, and aluminum and inevitable impurities for the remainder, and is adjusted so that the ratio of the silicon content to the magnesium content is 0.65 or more. The average crystal grain size and the electric conductivity of the aluminum alloy sheet are 70 .mu.m or less and 43 to 51% IACS, respectively.The composition of the aluminum alloy is adjusted in this manner, and the crystal grain size and the electric conductivity are restricted within the specific ranges by controlling the manufacturing conditions. Thus, there may be provided an aluminum alloy sheet which is improved in arc-weldability and resistance to filiform corrosion, as well as in formability and bake-hardenability at low temperature.
    Type: Grant
    Filed: September 2, 1988
    Date of Patent: March 20, 1990
    Assignees: Kabushiki Kaisha Kobe Seiko Sho, Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Yasuo Muraoka, Mituo Hino, Yasunori Sasaki, Seiji Sasabe
  • Patent number: 4826238
    Abstract: A side sill longitudinally extending at each of laterally opposite sides of a lower portion of a vehicle body is provided with a substantially uniform box-like cross-section which is defined by a top and a bottom wall and a right and a left side wall. The side sill is implemented with a hollow molding of aluminum, plastics or like lightweight material which is produced by extrusion molding. To provide the side sill with sufficient rigidity, the top and bottom walls are each provided with a sufficiently greater thickness than the side walls.
    Type: Grant
    Filed: November 30, 1987
    Date of Patent: May 2, 1989
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Yoshimasa Misono, Takanobu Ito, Yasuo Muraoka, Atsuyuki Mizuuchi
  • Patent number: 4606395
    Abstract: A method of producing a fiber-reinforced composite material in which a fiber body is mounted on mounting surfaces in a mold cavity, which mounting surfaces are in fluid communication with the outside of the mold through air relief passages. A molten matrix metal is poured into the mold cavity and then subjected to a high hydrostatic pressure so as to be filled into the fiber body while expelling the air from the fiber body to the outside of the mold through the air relief passages. The molten metal is thereafter filled into the air relief passages and solidifies immediately to seal the mold cavity from the ambient atmosphere whereby the molten matrix in the mold cavity is rapidly solidified under high pressure to form a fiber-reinforced composite material of high quality with inclusion of substantially reduced voids or cavities.
    Type: Grant
    Filed: November 6, 1981
    Date of Patent: August 19, 1986
    Assignees: Art Kinzoku Honda Giken Kogyo Kabushiki Kaisha, Kogyo Kabushiki Kaisha
    Inventors: Keisuke Ban, Akimasa Daimaru, Yasuo Muraoka, Noriaki Miyake