Double groove center sill
US4630546A · kind A · utility
10Cited by
3References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 18, 1983 |
| Grant date | Dec 23, 1986 |
| Priority date | — |
| Expiry date | Nov 18, 2003 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB61D17/10
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A railway car underframe includes a centersill having a central section and opposite end sections. The sill includes spaced vertical walls, and upper and lower walls which are slotted and in registry the length of the central section, and which form in cross section a spaced I-beam construction. The construction provides a sill having high torsional flexibility which is necessary to accommodate the railway car to track conditions tending to derail the car when single axle trucks with two wheels are utilized.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.