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:
Oct. 21, 2008
Filed:
Sep. 02, 2005
Hideyuki Nakamura, Kudamatsu, JP;
Takashi Furukawa, Kudamatsu, JP;
Takashi Yoshida, Shunan, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
The invention provides a railway car with superior riding quality by improving the flexural rigidity of the car body structure while suppressing increase of body structure mass. A reinforcing plateis attached to a roof constructionon the side facing an inner side of the car body at a longitudinal center portion of a railway car body structurecomposed of a roof construction, a side construction, an underframeand an end construction. The range in which the reinforcing plateis adhered in the longitudinal direction of the railway car body structureis between two body bolsters, and the range in which the plateis adhered in the horizontal direction of the roof constructionis approximately half the length of the roof constructionin the horizontal direction. The thickness of the reinforcing plateis increased gradually as the height of the roof constructionin the vertical direction increases. According to this arrangement, the deformation of the roof constructionat the longitudinal center portion of the railway car body structure, which is excessive without the present arrangement, is suppressed, and the flexural rigidity of the railway car body structureis effectively improved. In other words, the bending vibration of the railway car body in the vertical direction can be suppressed, and a superior riding quality is provided.