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. 28, 2006
Filed:
Jun. 01, 2004
Thomas R. Berg, St. Louis, MO (US);
Nathan J. Reese, Troy, IL (US);
Jeffrey M. Ruback, Edwardsville, IL (US);
Thomas R. Berg, St. Louis, MO (US);
Nathan J. Reese, Troy, IL (US);
Jeffrey M. Ruback, Edwardsville, IL (US);
ASF-Keystone, Inc., Granite City, IL (US);
Abstract
An improved sideframe has a bolster opening configured to accept a variety of spring group and friction shoe assembly designs. The bolster opening is defined by a bottom section, a top compression member, and two opposing column members and has two column wear plates each secured to the opposing column members. The bottom section of the bolster opening defines a spring seat. The dimensions of the bolster opening of the sideframe allow for a variety of freight car truck suspension systems including the spring group, bolster and friction shoe used therewith.