Safety system for continuously checking the integrity of a railway train
US6698847B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 27, 2002 |
| Grant date | Mar 2, 2004 |
| Priority date | — |
| Expiry date | Nov 27, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB61L15/0081
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
The system comprises an electric line which extends along the train, and head apparatus and tail apparatus connected to the ends of the line. The head apparatus comprises a DC voltage supply operable to apply to the line a DC voltage of predetermined value and a detector operable to generate an alarm upon loss of a given signal on the line. The tail apparatus comprises a generator of the said signal coupled to the line and a DC/DC converter the input of which is connected to the line and the output of which is connected to the signal generator to provide to this latter a supply voltage derived from that generated by the first supply device of the head apparatus. The system is such that an interruption of the train capable of causing interruption to the said line is able to cause deactivation of the signal generator of the tail apparatus, which can be detected and signaled by the detector of the head apparatus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.