Cutting by use of rotating axially moving tool – Tool or tool with support – Having axial – core-receiving central portion
Patent
1995-10-02
1997-07-29
Bishop, Steven C.
Cutting by use of rotating axially moving tool
Tool or tool with support
Having axial, core-receiving central portion
408703, B23B 5104
Patent
active
056516460
ABSTRACT:
A hole saw with wood removal feature comprised of a drill portion having a cylindrical engagement portion secured thereto. The cylindrical engagement portion has two projections on a lower surface thereof. The device includes a cylindrical hole saw portion having a planar upper end, an open lower end, and a cylindrical side wall therebetween. The planar upper end has a central aperture formed therethrough and a pair of small apertures being diametrically opposed from each other outside of the central aperture. The central aperture receives the drill portion therethrough with the two projections coupling with the pair of small apertures. The open lower end opens into a hollow interior cavity. The open lower end has a plurality of cutting teeth formed on an outer edge thereof. The cylindrical hole saw has an angular slot formed therein extending from the open lower end to a position beneath the planar upper end.
REFERENCES:
patent: 2978002 (1961-04-01), Ransom
patent: 3758221 (1973-09-01), Meshulam
patent: 3880546 (1975-04-01), Segal
patent: 5246317 (1993-09-01), Koetsch et al.
Banke George P.
Banke Michael P.
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