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:
Aug. 10, 1999
Filed:
Apr. 11, 1997
Applicant:
Inventor:
Todd L Lydic, Johnstown, PA (US);
Assignee:
Johnstown America Corporation, Chicago, IL (US);
Primary Examiner:
Int. Cl.
CPC ...
B61D / ;
U.S. Cl.
CPC ...
105248 ; 105253 ; 105404 ;
Abstract
A lightweight hopper-type rail car provides for a smooth exterior surface so as to minimize aerodynamic drag thereon when the car is in motion. The railcar includes a cross ridge arrangement which greatly increases the fabrication efficiency of the car as well as providing a smooth interior surface so as to allow the maximum release of bulk material contained within the car.