专利检索 ap:"Alexander Löffler" 第 1 页

1.

发明授权
Dust-proof element and a method of its use in an electrical hand-held tool and with a working tool 失效

公开(公告)号：US06551525B2

公开(公告)日：2003-04-22

申请号：US09802777

申请日：2001-03-09

申请人： Karl-Heinz Hofmann , Alexander Löffler

发明人： Karl-Heinz Hofmann , Alexander Löffler

IPC分类号： C09K322

CPC分类号： B25F5/00 , B08B17/06 , B08B17/065 , B23Q11/0042 , B23Q11/08 , B23Q11/0883 , B24B23/02 , B24B55/10 , Y10T408/96 , Y10T428/192

摘要： A dust-proof element for reducing creeping dispersion of dust along a free surface formed as one of locally limited dust trap element (5) and dust barrier (7) having a surface with an artificial pimpled microcrystalline structure with bumps and indentations having a size in a range from 5 to 100 &mgr;m and spaced from each other by a distance from 5 to 200 &mgr;m, and a method of protecting hand-held tools and working tools with the dust-proof element.