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:
Oct. 22, 2013
Filed:
May. 13, 2010
Masao Kinefuchi, Kobe, JP;
Tomokazu Nakagawa, Kobe, JP;
Takunori Yamaguchi, Kobe, JP;
Mie Tachibana, Kakogawa, JP;
Kenichi Watanabe, Kakogawa, JP;
Masao Kinefuchi, Kobe, JP;
Tomokazu Nakagawa, Kobe, JP;
Takunori Yamaguchi, Kobe, JP;
Mie Tachibana, Kakogawa, JP;
Kenichi Watanabe, Kakogawa, JP;
Kobe Steel, Ltd., Kobe-shi, JP;
Abstract
A bumper structure which as a whole has a reduced weight and which has sufficient buckling strength. A bumper structure has a box-like outer shape constituted of a front flange (), a rear flange (), an upper web (), and a lower web () which consist of a steel material. An intermediate web () consisting of a material other than the steel material is disposed between the upper web () and the lower web (). If the Young's modulus of the steel material is E, the density of the steel material is ρ, the Young's modulus of the material which forms the intermediate web () is E, and the density of the material which forms the intermediate web () is ρ, the bumper structure satisfies E/ρ<E/ρ.