| 摘要 |
<p>FIELD: construction.SUBSTANCE: device for icicle, ice and snow removal from building roof edges includes flexible elastic band protruding beyond the roof edge and made in the form of a part of hollow cylinder. The band is a nonlinear relay element with two stable states. Band edges are attached to roof edge and to brackets mounted on a wall under the band by elliptic guiding slots with pins, made in the band. Permanent magnets facing each other with similar poles with a gap between them adjustable by shifting threaded bushing with a magnet on its end, mounted on a bracket, are attached to lower band surface and to brackets.EFFECT: enhanced operational reliability of roof.2 dwg</p> |
