| 摘要 |
<p>Snow removal apparatus has a housing open at its front end in which a central fan blower is mounted, Mounted to the housing forwardly of and flanking the central fan are a pair of vertically rotating clearing screws. Each of the screws is also provided with a deflector which is movable in a circular path concentric with the axis of rotation so as to provide a selectively postionable backing or rear wall therefor.</p> |
