Large holesaw mandrel assembly

Details Large holesaw mandrel assembly Large holesaw mandrel assembly

2006-11-16

2009-02-10

Howell, Daniel W (Department: 3726)

Cutting by use of rotating axially moving tool

Tool or tool with support

Having axial, core-receiving central portion

C408S23900A

Reexamination Certificate

active

07488146

ABSTRACT:
A holesaw mandrel has a mandrel body with at least one bore, a pilot drill bit bore, and a first end coupled with the body. The first end is coupled with a driver. A second end extends from the body and includes a threaded spud. A sliding collar is axially movable on the mandrel body. The sliding collar includes at least one pin extending the bore in the mandrel body. A resilient member is positioned adjacent the threaded member to provide enhanced securement of the holesaw. The sliding collar is magnetized to prevent withdrawal of the pin from the holesaw. A positioning member is in the pilot drill bore to provide a desired orientation of the pilot drill bit.

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