Knuckle formed without a finger core
US8631952B2 · kind B2 · utility
15Cited by
152References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 8, 2012 |
| Grant date | Jan 21, 2014 |
| Priority date | — |
| Expiry date | May 8, 2032 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22C9/103
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A railcar coupler knuckle includes a tail section, a hub section, and a nose section. The tail, hub, and nose sections define internal cavities including (i) a kidney cavity, (ii) a pivot pin cavity, and (ii) a finger cavity. The kidney and pivot pin cavities are formed using at least one internal core during manufacturing of the coupler knuckle. The finger cavity is formed from a finger section of cope and drag mold portions of a mold used during manufacturing of the coupler knuckle, wherein the finger section of the mold defines the entirety of the finger cavity of the coupler knuckle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.