Tool for enlarging hole

Details Tool for enlarging hole Tool for enlarging hole

B - Operations, Transporting

23

B

B23B 49/00 (2006.01) B23B 51/00 (2006.01) B23B 51/04 (2006.01) B27F 5/12 (2006.01) B27G 15/00 (2006.01)

Patent

CA 2257758

A tool for enlarging the size of an existing bore to a selected enlarged size. The tool has a drill sized to define the enlarged bore, and a guide having a cylindrical body sized so that the guide can be rotated in the existing bore. The guide and drill including cooperating structures for releasably interconnecting the guide and the drill with the guide and drill coaxially aligned whereby, with the guide releasable secured to the drill, the guide can be located within the original hole to guide the cutting action of the drill as it enlarges the original hole.

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