| 摘要 |
An extractor for stuck drill bits. The extractor has an elongated main body with a bore at one end, the bore sized and shaped to fit over the shank of a drill bit. The drill bit shank has a cross section shape with a non-circular feature, such as a slot, a square, triangle, etc. The bore has a cooperative shape, and when engaged on the shank of the drill bit permits transfer of torque between the extractor and the drill bit. The extractor has a torque engaging surface, such as a hexagonal surface, on which a torque device such as a wrench can be engaged, and reverse torque thereby applied to extract a stuck drill bit.
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