Testing interface for railroad signal relays
US6963202B2 · kind B2 · utility
3Cited by
6References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 31, 2002 |
| Grant date | Nov 8, 2005 |
| Priority date | — |
| Expiry date | Oct 4, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/3278
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A testing interface provides rapid, temporary connections to individual signal relays used in railroad signal systems when testing is required, and otherwise permits normal operation of railroad signal vital circuits through its connections. A connectivity block provides contacts that are used to isolate the relay from its application circuit and provide connectivity to the relay coils for testing when a connection paddle is inserted into the block. The interface allows fully automated or manual testing of installed relays without requiring removal from the relay rack.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.