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.:
Date of Patent:
Dec. 29, 2009
Filed:
Oct. 11, 2006
Akinori Yamamoto, Shizuoka, JP;
Akinori Yamamoto, Shizuoka, JP;
Koito Manufacturing Co., Ltd., Tokyo, JP;
Abstract
A vehicle lamp has a housing and a transparent cover formed of a transparent resin having a flexural modulus of 2000 MPa or more, and joined to the housing by beam welding. The transparent cover has a first surface and a second surface. The second surface faces the housing, and a welding surface is formed along a circumference of the second surface. The welding surface is formed such that the welding surface has a three-dimensional curved surface in a closed-curve form, and such that each continuing surface of the welding surface is formed as a flat surface with respect to a direction of a normal line thereto or as a curved surface having a curvature radius of 30 mm or more with respect to a direction of a normal line thereto.