Cross bearer arrangement for slotted center sill
US4630547A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 5, 1984 |
| Grant date | Dec 23, 1986 |
| Priority date | — |
| Expiry date | Apr 5, 2004 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB61D17/10
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A railway car underframe includes a center sill having a central section and opposite end sections. The sill includes spaced vertical walls, and upper and lower walls which are slotted 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 suspensions with two wheels are utilized. The sill also includes a separator in the form of a channel which includes flanges at its sides which are secured to the vertical walls of the sill. The separator extends substantially the length of the slots and is effective to resist lateral forces tending to buckle or permanently deform the sill during operation, while not adversely affecting the high torsional flexibility which is required in the sill structure. The railway car further includes a cargo or load bearer construction having cantilevered cross bearer members which include vertical webs with upper and lower flanges projecting outwardly from the sill. The cross bearers engaged with the central portion of the sil…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.