Fuel level indicator for combustion tools
US6722550B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 9, 2003 |
| Grant date | Apr 20, 2004 |
| Priority date | — |
| Expiry date | May 9, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/50
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A combustion tool employing a replaceable pressurized fuel cell includes a fuel condition monitor system for monitoring and indicating fuel cell fuel condition. The fuel condition monitor system includes a fuel condition monitor for monitoring at least one of fuel cell pressure and fuel flow from the fuel cell, a control unit connected to the monitor for receiving fuel condition data sensed by the monitor, comparing the sensed data with preset values and determining fuel level in the fuel cell based on the determinations, a metering valve connected to the control unit, providing the exact amount of fuel based upon fuel cell condition, and an indicator connected to the control unit for providing an indication of fuel level. A method of monitoring and indicating combustion tool fuel cell condition includes providing a preset series of fuel cell condition values, monitoring fuel cell condition, obtaining fuel cell condition data, comparing the monitored data with preset values and determining whether there is sufficient fuel and providing a signal to an indicator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.