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.

Date of Patent:
Aug. 08, 2000

Filed:

Sep. 01, 1998
Applicant:
Inventors:

Tatsuo Kasuga, Wako, JP;

Hideaki Takaishi, Wako, JP;

Masayoshi Okamoto, Wako, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B60J / ;
U.S. Cl.
CPC ...
296205 ; 296189 ; 527351 ;
Abstract

A hollow frame member of an aluminum alloy for a vehicle body frame includes a front pipe portion. The front pipe portion has an annular end surface as a surface receiving a collision load at a front end thereof. In the front pipe portion, a cross sectional area is gradually increased from a base end toward the receiving surface, and a thickness is gradually decreased from the base end toward the receiving surface. Thus, the front pipe portion can be crushed early and stably from the receiving surface upon collision of the vehicle to enhance the collision energy absorbing efficiency.


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