The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Mar. 04, 2008

Filed:

Feb. 17, 2005
Applicants:

Hiroki Koba, Osaka, JP;

Kaoru Hoshide, Tokyo, JP;

Minoru Kouchi, Tokyo, JP;

Inventors:

Hiroki Koba, Osaka, JP;

Kaoru Hoshide, Tokyo, JP;

Minoru Kouchi, Tokyo, JP;

Assignees:

Sanyo Electric Co., Ltd., Moriguchi-shi, JP;

THK Co., Ltd., Tokyo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B 21/14 (2006.01); H04N 9/31 (2006.01); G02B 26/02 (2006.01); F21V 3/08 (2006.01); E06B 9/30 (2006.01);
U.S. Cl.
CPC ...
Abstract

Each shading plate comprises a rotating shaft and a driving shaft arranged vertically. First divided shading plate is loosely fitted to and supported by (not adhere to) the rotating shaft and rotates around the shaft. Second divided shading plates are fixed to the rotating shafts and rotate by rotating movement of the shafts. A driving shaft is connected longitudinally to (not adhere to) an edge of the first divided shading plate and supply power to rotate the first divided shading plates. Recesses are formed at the center of upper short side and at the center of lower short side of the first divided shading plate and the first divided shading plate and the second divided shading plates which form one and the same shading plate are so constructed that their short sides are overlapped each other.


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