Interlock feature for railcar cores
US8499819B2 · kind B2 · utility
12Cited by
8References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 20, 2011 |
| Grant date | Aug 6, 2013 |
| Priority date | — |
| Expiry date | May 20, 2031 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22C9/108
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A core assembly for casting a railcar coupler knuckle includes a first core and a second core. The first core includes a lug. A slot is defined in the second core. First and second positive stop surfaces are provided. The invention reduces core shifting during casting and therefore improves the strength and fatigue life of a coupler knuckle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.