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:
Jun. 21, 2005
Filed:
Feb. 26, 2002
Hiroyuki Doi, Tokai, JP;
Takashi Motoyoshi, Tokai, JP;
Tsutomu Takachi, Tokai, JP;
Masanobu Kawase, Toyota, JP;
Nobuyasu Yamada, Toyota, JP;
Hiroyuki Doi, Tokai, JP;
Takashi Motoyoshi, Tokai, JP;
Tsutomu Takachi, Tokai, JP;
Masanobu Kawase, Toyota, JP;
Nobuyasu Yamada, Toyota, JP;
Nippon Steel Corporation, Tokyo, JP;
Abstract
A structural member usable for a car capable of demonstrating excellent flexural strength and absorbed energy performance and, moreover, capable of realizing weight reduction and is a structural member for a car being formed with a high-tensile steel pipe having a material property of not less than 1,400 MPa in tensile strength and not less than 5% in elongation. The structural member has a closed section structure which is provided as the configuration of the cross section perpendicular to the direction of the longitudinal axis. The cross-sectional configuration satisfies the following expression when a is defined as the maximum length of said cross-sectional configuration in the longitudinal direction, when b is defined as the maximum length thereof in the direction perpendicular to said direction, when L is defined as the circumferential length thereof, and when t is defined as the wall thickness of the steel pipe,0.65≦0.75,0.014≦0.02and preferably, the structural member is disposed so that the longitudinal direction of the cross-sectional configuration of the structural member coincides with the direction of the collision of a car body when the structural member is attached to the car body.