Stabilizing high speed railway truck safety device
US4363277A · kind A · utility
11Cited by
6References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 13, 1980 |
| Grant date | Dec 14, 1982 |
| Priority date | — |
| Expiry date | May 13, 2000 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB61F5/22
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A safety device for a banking vehicle includes a pair of cylinders which extend to hold the superstructure in an upright position. The cylinders are hydraulically connected to an accumulator which provides a pressurized fluid reservoir. A valve controls flow from the accumulator to the cylinders. Upon detection of a failure in one of the vehicle systems the valve moves to a position in which fluid flows from the accumulator to extend the cylinders. A pilot operated check valve is positioned between the accumulator and the cylinders to hold the cylinders in the extended position until the failure is rectified.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.