CARUSILLO, STEVE,LAMBERT, TREVOR J.,MARIETTA, JOSEPH O.,PETERS, STEPHEN
申请号：
CA3073178
公开号：
CA3073178A1
申请日:
2018.08.17
申请国别(地区):
CA
年份:
2019
代理人:
摘要：
A drill bit comprises a shank extending along an axis and an interface comprising at least one outermost drive portion spaced at a first interface distance from the axis. The drill bit further comprises a resilient arm extending from a proximal end of the shank. The resilient arm comprises an outer arm surface facing away from the axis and a retention surface facing toward a distal end of the shank. The retention surface may be radially aligned about the axis with respect to the outermost drive portion. The resilient arm is movable between: a first position where the outer arm surface is spaced from the axis at a first arm distance greater than the first interface distance, and a second position where the outer arm surface is spaced from the axis at a second arm distance less than or equal to the first interface distance.
