System and method for controlling toxic gas
US8286603B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 31, 2007 |
| Grant date | Oct 16, 2012 |
| Priority date | — |
| Expiry date | Jul 14, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2300/018
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A safety system for connection to a toxic gas detector and a toxic gas producing engine, and its operating method, includes an interrupt device coupled to connections to the detector and the engine. The interrupt device includes a toxic gas signal detecting circuit and a circuit for permitting starting of the engine. The detecting circuit activates the permitting circuit if the toxic gas signal represents a toxic gas concentration below a predetermined level. In one embodiment, the permitting circuit is activated if the safety system is healthy and fully functional.Similarly, a safety system for connection to a toxic gas detector and a toxic gas supply, and its operating method, includes an interrupt device coupled to connections to the detector and the toxic gas supply. The interrupt device includes a toxic gas signal detecting circuit and a circuit for permitting of flow from the toxic gas supply. The detecting circuit activates the permitting circuit if the toxic gas signal represents a toxic gas concentration below a predetermined level.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.