Rail road car and bearing adapter fittings therefor
US7775163B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 24, 2007 |
| Grant date | Aug 17, 2010 |
| Priority date | — |
| Expiry date | Sep 24, 2027 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB61F5/30
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A rail road freight car truck, which may be a Barber S2HD truck or other kind of truck, has a truck bolster and a pair of side frames, the truck bolster being mounted transversely relative to the side frames. The sideframes are mounted on a pair of wheelsets. The bolster may be resiliently sprung and may have friction dampers. Either the friction dampers or the sideframe column wear plates may have a non-metallic wear plate, or wear surface, which may be replaceable, and which may tend to exhibit non-stick slip, or reduced stick slip behaviour in use. Bearing adapters may be mounted on the bearings of the wheelsets, and resilient pad members may be mounted on the bearing adapters. The pedestal seats may sit over the resilient pads. There may be a discontinuity in the vertical load path between the pedestal roof and the bearing. The discontinuity in the vertical load path may tend to shed a portion of the vertical load to either side of the top rollers of the bearing races to a greater extent than if the vertical load path discontinuity were not present.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.