Over-speed protection device
US11603122B2 · kind B2 · utility
0Cited by
10References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 11, 2020 |
| Grant date | Mar 14, 2023 |
| Priority date | — |
| Expiry date | Feb 18, 2041 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB61L15/0081
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An SIL 4 over-speed protection device for a rail vehicle includes a first logical unit configured to be connected to a first power source, a first speed sensor and a first vital supervision circuit and a second logical unit configured to be connected to a second power source, a second speed sensor and a second vital supervision circuit. The first logical unit is configured to determine if the second logical unit is functioning properly and the second logical unit is configured to determine if the first logical unit is functioning properly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.