Core assembly in a coupler for a railway vehicle
US4143701A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 13, 1977 |
| Grant date | Mar 13, 1979 |
| Priority date | — |
| Expiry date | Jul 13, 1997 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22C9/103
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A novel core assembly is used in a sand mold for casting a hollow section in a coupler head extending beyond a horn line into a coupler shank of a coupler for a railway vehicle. The core assembly includes head and shank core members having face surfaces each including a recess surface and a projected surface arranged such that the recess surface in the head core receives the projected surface in the shank core. In a similar way, the recess surface in the shank core receives the projected surface in the head core to maintain the head and shank cores in an aligned abutting relation while supported in the sand mold. The face surfaces extend transversely to the coupler shank along a parting line spaced rearwardly of the plane containing the horn line of the coupler. The face surfaces are further characterized by a conically-shaped projection extending from one core member into a conically-shaped opening in the other core member to mechanically interconnect and align the two core members. The head and shank cores each includes concave side wall sections terminating at the face surfaces to produce cast protrusions in the hollow section of the coupler shank at the parting line between the…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.