| 摘要 |
<p>The product is concerned with a tool for weed control and other heating applications for manual propulsion on trafficable surfaces. Unlike previously known manually propelled models for the above tasks, the product is fitted with a power supply unit as energy source for an electronic ignition/quenching means and a flame monitor, which ensures that the fuel supply is opened at the same time as it is ignited. The flame monitor ensures that there is no gas supply in the absence of a flame, and hence no risk of the escape of unburned gas.</p> |
