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:
Feb. 23, 2010
Filed:
Jan. 27, 2006
Kenji Tamura, Takatsuki, JP;
Yoshiaki Nakazawa, Takarazuka, JP;
Michitaka Yoshida, Amagasaki, JP;
Katsutoshi Takagi, Aichi, JP;
Mitsutoshi Kano, Toyota, JP;
Kenji Tamura, Takatsuki, JP;
Yoshiaki Nakazawa, Takarazuka, JP;
Michitaka Yoshida, Amagasaki, JP;
Katsutoshi Takagi, Aichi, JP;
Mitsutoshi Kano, Toyota, JP;
Sumitomo Metal Industries, Ltd., Osaka, JP;
Toyoda Iron Works Co., Ltd., Aichi, JP;
Abstract
A crash energy absorption member is provided which has excellent crash energy absorbing properties with the ability of repeated buckling in a stable manner, a high average load at the time of collapse, and the maximum load which is within a range which does not break other members. It is a crash energy absorption member which preferably has a transverse cross-sectional shape of an octagon and which is intended for absorbing impact energy by buckling in the lengthwise direction into a shape of bellows when it receives an impact load. With respect to at least one side forming the transverse cross-sectional shape, when the angle formed by the two sides which adjoin the opposing ends of the one side is α, the relationship between the length L1 of the one side and the distance L2 between the two furthest ends of the two sides interposing the one side satisfies the following equation:0<1/2<1/{2×sin(α/2)+1}.