Annular hole cutter

Details Annular hole cutter Annular hole cutter

1980-09-02

1982-03-30

Hinson, Harrison L.

Cutting by use of rotating axially moving tool

Tool or tool with support

Having axial, core-receiving central portion

408 59, 408224, 408703, B23B 4102, B23B 2710, B23B 5100

Patent

active

043221882

ABSTRACT:
An annular hole cutter having an inverted cup-shaped body provided with a plurality of circumferentially spaced teeth around its lower edge. Helical flutes extend upwardly between successive teeth and form around the outer periphery of the cutter a plurality of radially relieved lands, each having a circle ground narrow margin at the leading edge thereof. Each tooth has a plurality of radially and axially staggered cutting edges thereon.

REFERENCES:
patent: Re28416 (1975-05-01), Hougen
patent: 2444099 (1948-06-01), Hennessey, Jr.
patent: 2847885 (1958-08-01), Wagner
patent: 3130763 (1964-04-01), Schlosser et al.
patent: 3860354 (1975-01-01), Hougen
patent: 3977807 (1976-08-01), Siddall

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