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:
Mar. 30, 2004
Filed:
Sep. 10, 2002
Takahisa Yamamoto, Yamaguchi, JP;
Sumio Okuno, Yamaguchi, JP;
Toshiaki Makino, Yamaguchi, JP;
Yoshihiko Ina, Yamaguchi, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A front end portion is disposed on the front end of a car body. The floor thereof consists of extruded hollow members that constitute a shock absorber . The shock absorber is divided into an upper shock absorber and a lower shock absorber . Annealed extruded hollow members are used to form the hollow member . The hollow members are disposed so that their direction of extrusion corresponds to the longitudinal direction of the car body. The hollow members are divided longitudinally into two portions by a plate . At the width-direction ends of member , the face plates and are welded onto plates . Upon receiving impact load, members fold up into concertinas, absorbing the impact force. Since members are separated by a plate, they deform evenly and continuously into concertinas instead of being bent in half, capable of absorbing a large energy.