| 摘要 |
<p>The present invention consists of a device for fitting security gratings in a simple way, without any complicated walling operations and with no need of skilled workers. It permits to place a grating by means of two guides parallel each other, which represent the base and the top of the grating. Since they are provided with telescopic parts at their ends, they suit any span to be protected, ensuring a perfect fitting. This device and its fitting process can get, by the realization of an industrial product, the same effects obtained by the realization of a handmade product, but a very low costs and with considerable saving of time in fitting.</p> |
