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:
Jul. 25, 2000
Filed:
May. 13, 1998
Dale Monsell, Omaha, NE (US);
Other;
Abstract
An improved railroad car wheel truck assembly comprises four arcuate weight bearing surfaces, one above each axle bearing, providing a direct load path such that a light weight frame can be used, each weight bearing surface being received within a matching arcuate channel mounted on the underside of the rail car body, the channels having a greater arc length that the corresponding weight bearing surface such that the wheel truck is allowed to rotate relative to the rail car body, about a central pivot pin, the wheel truck assembly further comprising a two part spring assemblies for each wheel with long springs that are always under compression and shorter springs that are compressed only when the car is under a load, each wheel spring assembly having one long spring that urges a wedge between the wheel truck frame and wheel set axle holding saddle to urge the wheel set and axle into alignment.