专利名称：Drill bit发明人：Steve Burn申请号：US12679430申请日：20080926公开号：US08545140B2公开日：20131001
专利附图：
摘要：A drill bit for drilling holes in wood or the like has a spade cutting element, athick elongate shaft and a shank adapted to be inserted into an SDS drill chuck. In apreferred embodiment, the shaft is provided with one or more ridges extending helicallyalong most of its length, to strengthen and stiffen the shaft and to direct drilling debris
away from the cutting element. The shaft has a diameter greater than or equal to that ofthe shank. The drill bit may be installed in and removed from the drill chuck more rapidlythan conventional wood bits, is more robust and is more convenient and reliable in use.
申请人：Steve Burn
地址：Northampton GB
国籍：GB
代理机构：Heslin Rothenberg Farley & Mesiti P.C.
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