Railroad coupler knuckle with external weight reducing features and method of forming the same
US10486719B2 · kind B2 · utility
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14References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 22, 2017 |
| Grant date | Nov 26, 2019 |
| Priority date | — |
| Expiry date | Nov 8, 2037 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB61G3/04
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A railroad coupler knuckler meets AAR contour requirements and it includes unique external weight reducing features that strategically reduce weight without compromising strength or fatigue life. The design of the railroad knuckle of the present invention allows for formation of the knuckle through forging or coreless casting techniques and thus allows for the use of a better grade of steel compared to AAR Grade E and such forged or cast knuckle will yield much higher fatigue life compared to cast knuckles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.