Patents by Inventor Tadashi Hane

Tadashi Hane 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: 4791533
    Abstract: A natural lighting apparatus includes a mirror for reflecting light, and a supporting mechanism for supporting the mirror for rotation about both a first axis and a second axis perpendicular to the first axis. A first sensing mechanism is provided for sensing a first direction of the light source about the first axis, and for generating a first signal representative of the first light source direction about the first axis. A second sensing mechanism is provided for sensing a second direction of the light source about the second axis, and for generating a second signal representative of the second light source direction about the second axis. An attitude control mechanism angularly drives the mirror about the first axis according to the first signal from the first sensing mechanism, and about the second axis according to the second signal from the second sensing mechanism, thus controlling the attitude of the mirror to reflect light from the light source in a predetermined direction.
    Type: Grant
    Filed: June 24, 1987
    Date of Patent: December 13, 1988
    Assignee: Shimizu Construction Co., Ltd.
    Inventor: Tadashi Hane