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. 24, 2025
Filed:
Jul. 06, 2020
Hitachi, Ltd., Tokyo, JP;
Sota Kimura, Tokyo, JP;
Kyouji Takahara, Tokyo, JP;
HITACHI, LTD., Tokyo, JP;
Abstract
A bolster structure is capable of securing a prescribed space between a bolster and an underframe, maintaining the rigidity of the bolster structure, and reducing its weight and cost. The bolster structure is provided on an underframe constituting a floor of a railroad vehicle, and is formed by joining a plurality of shaped members having a multi-layer structure in which a width direction of the structure body is an extrusion direction. The plurality of shaped members include: shaped membersB andC having a region in which a part of layers on an underframe side is notched at a center of the structure body in the width direction; and shaped members including a fastening portion formed by notching a part of layers at both ends of the structure body in the width direction. A side beam of the underframe is fixed by the fastening portion.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile