Use of no-bake mold process to manufacture railroad couplers
US8485371B2 · kind B2 · utility
15Cited by
8References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 11, 2010 |
| Grant date | Jul 16, 2013 |
| Priority date | — |
| Expiry date | Feb 23, 2030 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22C9/22
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A railroad coupler assembly having at least a body and a knuckle both formed in a no-bake manufacturing process, the body and the knuckle having dimensional tolerances of distances between features that wear during operation that are about half those obtained from a body and a knuckle manufactured by a green sand process, resulting in increased fatigue life compared to the body and the knuckle manufactured by a green sand process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.