Knuckle for a railway car coupler
US8297455B2 · kind B2 · utility
31Cited by
23References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 21, 2009 |
| Grant date | Oct 30, 2012 |
| Priority date | — |
| Expiry date | Jul 3, 2030 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB61G3/04
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A knuckle for a railway coupler system is made without internal voids or cores. Instead, external pockets are formed on the front face and tail portion surface to reduce weight. The knuckle is formed by investment casting, which permits a pulling face to be provided without a draft angle or parting line typical of a cast part. As a result of these innovations, the knuckle according to the invention has an improved fatigue life.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.