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:
Nov. 04, 2008
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 capable of reducing the initial load without provision of a crushing bead and capable of achieving a sufficient amount of shock absorption with stable buckling behavior. The crash energy absorption member is formed from a tubular body which has a length L and a polygonal transverse cross-sectional shape with 2n corners due to having 2n ridge lines (wherein n is a natural number greater than or equal to 3) and 2n surfaces partitioned by these 2n ridge lines, and which absorbs impact energy by buckling when an impact load is applied to one end in the axial direction towards the other end, characterized in that some of the 2n ridge lines only exist in a region which extends from a position spaced by a distance h in the axial direction from the one end to the other end, and if the number of the remaining ridge lines which have a length L is m, the following equations are satisfied:×0.30   (1)4≦≦2×(−1).   (2)