发明名称 Sound dampening housing for rock drill
摘要 The invention relates to a sound dampening housing (7) for a rock drill which moves along a feed beam in a longitudinal direction thereof, the sound dampening housing (7) being attachable to the feed beam (6) of the rock drill on its both sides so that together with the feed beam (6) the sound dampening housing constitutes a substantially closed space. The sound dampening housing (7) is double-shelled, and an airspace is provided between its inner shell and its outer shell.
申请公布号 AU2008235376(B2) 申请公布日期 2011.07.28
申请号 AU20080235376 申请日期 2008.04.04
申请人 SANDVIK MINING AND CONSTRUCTION OY 发明人 HAAVISTO, ARI;PELTOLA, SEPPO
分类号 E21B7/02;B25D17/11;E21B15/04 主分类号 E21B7/02
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