Hole saw assembly Patent #: 4148593
ApplicationNo. 06/916281 filed on 10/07/1986
US Classes:408/68, Ejector408/204, Having axial, core-receiving central portion408/206, And having stepped cutting edges408/703TREPANNING
ExaminersPrimary: Weidenfeld, Gil
Assistant: Bishop, Steven C.
Attorney, Agent or Firm
International ClassB23B 51/04 (20060101)
AbstractA hole saw accessory device that is used with a conventional drill chuck. The device includes a mandrel assembly that includes a tubular member and a locking assembly slidably mounted thereon. The locking assembly is locked against a ring member that is integrally built on one end of the tubular member. An arrowhead drill is used and the mandrel assembly is allowed to slide over a portion of the shank of the drill so that the slug of wood cut out by the conventional hole saw is easily ejected.