Patents by Inventor Tadayuki Okuda

Tadayuki Okuda 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: 6844681
    Abstract: A vehicle light apparatus includes: a power consuming portion provided in parallel with a group of light emitting elements for causing a total power value including power consumed by the lamp to become a normal power value, a breakage detecting portion for detecting a breakage with respect to the group of light emitting elements, and a control portion for controlling power supply to the group of light emitting elements, wherein in the event that a breakage of the group of light emitting elements is detected by the breakage detecting portion, a power supply to the lamp including the group of broken light emitting elements is stopped or power supplied to the lamp is reduced by the control portion. By providing the power consuming portion, the load characteristic can be made constant, and power consumption can be reduced when a breakage of the light emitting element is detected.
    Type: Grant
    Filed: June 2, 2003
    Date of Patent: January 18, 2005
    Assignee: Koito Manufacturing Co., Ltd.
    Inventors: Tomoaki Serizawa, Kimiaki Ishikawa, Tadayuki Okuda, Masayasu Ito, Taketoshi Fujigaya, Michio Arai, Hitoshi Takeda
  • Publication number: 20030227257
    Abstract: A vehicle light apparatus includes: a power consuming means provided in parallel with a group of light emitting elements for causing a total power value including power consumed by the lamp to become a normal power value, a breakage detecting means for detecting a breakage with respect to the group of light emitting elements, and a control means for controlling power supply to the group of light emitting elements, wherein in the event that a breakage of the group of light emitting elements is detected by the breakage detecting means, a power supply to the lamp including the group of broken light emitting elements is stopped or power supplied to the lamp is reduced by the control means. By providing the power consuming means, the load characteristic can be made constant, and power consumption can be reduced when a breakage of the light emitting element is detected.
    Type: Application
    Filed: June 2, 2003
    Publication date: December 11, 2003
    Inventors: Tomoaki Serizawa, Kimiaki Ishikawa, Tadayuki Okuda, Masayasu Ito, Taketoshi Fujigaya, Michio Arai, Hitoshi Takeda
  • Patent number: 6648491
    Abstract: In a light emitting diode 1 having a light emitting chip 2 and a lens portion 3 for containing the chip 2, the lens portion 3 has a direct light area 5 for use in emitting the light emitted from the chip 2 outside as direct light and a reflected light area 6 for use in emitting the light emitted from the chip 2 and passed through the lens portion 3 toward a reflective member 7 provided outside the lens portion 3, in which the direct light area 5 is formed so as to have a configuration irrotationally symmetric around the optical axis of an element, and the peripheral portion of the direct light area 5 or the side portion of the lens portion 3 is used as the reflected light area 6, which is formed so as to have a configuration rotationally symmetric around the optical axis of the element.
    Type: Grant
    Filed: January 29, 2002
    Date of Patent: November 18, 2003
    Assignee: Koito Manufacturing Co., Ltd.
    Inventors: Tsukasa Tokida, Tsutomu Machida, Tadayuki Okuda
  • Publication number: 20020101734
    Abstract: In a light emitting diode 1 having a light emitting chip 2 and a lens portion 3 for containing the chip 2, the lens portion 3 has a direct light area 5 for use in emitting the light emitted from the chip 2 outside as direct light and a reflected light area 6 for use in emitting the light emitted from the chip 2 and passed through the lens portion 3 toward a reflective member 7 provided outside the lens portion 3, in which the direct light area 5 is formed so as to have a configuration irrotationally symmetric around the optical axis of an element, and the peripheral portion of the direct light area 5 or the side portion of the lens portion 3 is used as the reflected light area 6, which is formed so as to have a configuration rotationally symmetric around the optical axis of the element.
    Type: Application
    Filed: January 29, 2002
    Publication date: August 1, 2002
    Applicant: KOITO MANUFACTURING CO., LTD.
    Inventors: Tsukasa Tokida, Tsutomu Machida, Tadayuki Okuda
  • Patent number: 5820244
    Abstract: A synthetic resin part integrally formed with metal members manufactured by the steps of integrally forming a plurality of metal member sets through coupling portions, each of the metal member sets comprising a plurality of kinds of metal members, inserting the metal member sets into the molding dyes of a forming machine, injecting synthetic resin for molding into the molding dye, forming a synthetic resin part integrally formed with metal members in sequence to form a synthetic resin part continuum where a plurality of synthetic resin parts are connected, and cutting off the coupling portions to complete the manufacture of the plurality of synthetic resin parts.
    Type: Grant
    Filed: November 18, 1996
    Date of Patent: October 13, 1998
    Assignee: Koito Manufacturing Co., Ltd.
    Inventors: Atsushi Yamada, Tadayuki Okuda, Masaki Hagiwara, Yoshihide Yoshida
  • Patent number: 5775798
    Abstract: A motor vehicle interior lamp is disclosed which has a lamp body of plastics material on which an electric lighting bulb is mounted by being supported between a pair of bulb terminals. One of the bulb terminals is connected to a power supply. For selectively grounding the other bulb terminal via a hand operated switch, a grounding conductor is embedded in the lamp body by insert molding. The grounding conductor is fabricated from sheet metal in one piece with a set of grounding terminals to be grounded by fastener elements. The grounding conductor is connected to each grounding terminal via an offset link which is capable of deformation in response to possible deformation or displacement of the grounding conductor during the insert molding of the lamp body and which is thus effective to hold the grounding terminals with their mounting holes in register with the mounting holes in the lamp body.
    Type: Grant
    Filed: April 5, 1996
    Date of Patent: July 7, 1998
    Assignee: Koito Manufacturing Co., Ltd.
    Inventors: Atsushi Yamada, Tadayuki Okuda
  • Patent number: 5700080
    Abstract: A vehicular lamp has a lamp body defining therein a lamp chamber, and a light source disposed in the lamp body. An air communication hole is formed in a back plate of the lamp body for producing an air communication passage between a lamp chamber and the air outside of the lamp. An encircle wall which defines the air communication hole projects inward with respect to the lamp chamber.
    Type: Grant
    Filed: December 28, 1995
    Date of Patent: December 23, 1997
    Assignee: Koito Manufacturing Co., Ltd.
    Inventor: Tadayuki Okuda
  • Patent number: 5609652
    Abstract: Disclosed are a method of manufacturing a synthetic resin part integrally formed with metal members, including the steps of: integrally forming a plurality of metal member sets through coupling portions, each of the metal member sets including a plurality of coupled together metal members; inserting the metal member sets into the molding dies of a forming machine; injecting synthetic resin for molding into the molding die, and forming a synthetic resin part integrally formed with metal members in sequence to form a synthetic resin part continuum where a plurality of synthetic resin parts are connected; and cutting off the coupling portions to manufacture the plurality of synthetic resin parts, and a synthetic resin part manufactured according to the above-mentioned manufacturing method.
    Type: Grant
    Filed: April 7, 1995
    Date of Patent: March 11, 1997
    Assignee: Koito Manufacturing Co., Ltd.
    Inventors: Atsushi Yamada, Tadayuki Okuda, Masaki Hagiwara, Yoshihide Yoshida