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. 29, 2005
Filed:
Feb. 27, 2002
Sumio Okuno, Kudamatsu, JP;
Kazufumi Yamaji, Yamaguchi, JP;
Kentaro Masai, Kudamatsu, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
In a railway car body formed of hollow shape members, a hollow shape memberhaving a shock absorbing function is provided to the ends of a hollow shape memberconstituting an underframe, where impact load is most likely to be received. The hollow shape memberis positioned so that the longitudinal direction thereof is arranged along the longitudinal direction of the car body. When impact load is received, the hollow shape memberformed at the ends of the memberdeforms and collapses, thereby relieving the impact force. The present invention simply provides treatment to some areas of the hollow shape members that form the car body without changing the conventional railway car structure greatly, thus minimizing the impact load provided to the passengers upon collision, and improves the safety of the railway car.