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.

Patent No.:

US 7520646 B1

PDF
Full Text
Expired
Date of Patent:
Apr. 21, 2009

Filed:

Sep. 12, 2006
Applicants:

Keiichi Tajima, Shizuoka, JP;

Tetsuya Ishida, Shizuoka, JP;

Inventors:

Keiichi Tajima, Shizuoka, JP;

Tetsuya Ishida, Shizuoka, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F21V 17/02 (2006.01); F21V 19/02 (2006.01); F21V 21/14 (2006.01); B60Q 1/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

An initialization function of a lighting direction control apparatus of a vehicle lamp is provided with functions: for swinging, in a first direction, a lamp across the initial position until the lamp is bumped; for swinging, in the opposite direction (a second direction), the lamp from the bumped position across the initial position at a predetermined angle; and for swinging, in the first direction, the lamp at an angle across the initial direction. The bumped position is defined as a deflection angle position at which the headlamp does not dazzle the driver of a car approaching from the opposite direction. The predetermined angle is defined as an angle greater than a reflection error angle that is generated at the bumping time.


Find Patent Forward Citations

Tajima, Keiichi. (2009). Lighting direction control apparatus (U.S. Patent No. 7520646). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7520646

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