发明名称 |
AN ATTACHMENT FOR A PERCUSSIVE TOOL |
摘要 |
An attachment for a percussive tool comprises a plurality of parallel rows of teeth (10) formed along the edges of planar chisel blades (9) arranged to form a shape having rotational symmetry. The attachment is connected to a percussive tool and placed in contact with a wall (12). The tool causes percussive action of the attachment such that the chisel blades (9) form a plurality of parallel grooves (13) and ridges in the wall. The tool and attachment are then rotated through an angle and placed in contact with the wall (12) in a position overlaying the plurality of parallel grooves (13). This breaks up the ridges forming a hole (15) of a substantially uniform depth. The attachment is used to produce square holes suitable for installing wall boxes for light switches or power points.
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申请公布号 |
WO0108853(A1) |
申请公布日期 |
2001.02.08 |
申请号 |
WO2000GB02989 |
申请日期 |
2000.08.01 |
申请人 |
POWER & DESIGN LIMITED;KILPATRICK, JAMES |
发明人 |
KILPATRICK, JAMES |
分类号 |
B25D17/02;(IPC1-7):B25D17/02 |
主分类号 |
B25D17/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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