Fluid delivery system for a fire apparatus
US11185728B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 13, 2018 |
| Grant date | Nov 30, 2021 |
| Priority date | — |
| Expiry date | Apr 16, 2039 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA62C27/00
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A fire apparatus includes a fluid delivery system having a water circuit, an agent circuit, and a ratio controller. The water circuit includes a water pump configured to pump water from a water source through the water circuit. The agent circuit includes an agent tank configured to store an agent, an agent pump configured to pump the agent through the agent circuit, and an agent metering valve positioned to variably restrict a flow of the agent therethrough. The ratio controller is positioned to receive the water and the agent. The ratio controller is configured to provide an agent-water solution to one or more outlets. The agent metering valve is a self-adjusting metering valve having a valve controller configured to adjust at least one of an orifice size and a valve position based on a water flow rate entering the ratio controller and a preselected agent-to-water ratio for the agent-water solution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.