Hollow drilling tool

Details Hollow drilling tool Hollow drilling tool

1990-01-22

1991-12-03

Schwartz, Larry I.

Cutting by use of rotating axially moving tool

Tool having crystalline cutting edge

408144, 408204, 408207, 125 20, 175403, 175409, 175408, B23B 2720

Patent

active

050695843

ABSTRACT:
A hollow drilling tool is made up of an axially extending tubular carrier part, a cutting body at one end of the carrier part, and guide elements located in the axial direction of the carrier part between the cutting body and the carrier part. The radially outer surface of each guide element is in alignment in the axial direction of the carrier part with the radially outer surface of the cutting body. The guide elements guide the hollow drilling tool in a borehole formed by the cutting body.

REFERENCES:
patent: 3120286 (1964-02-01), Bridwell
patent: 3762828 (1973-10-01), Faber
patent: 3833077 (1974-09-01), Lavelle
patent: 4208154 (1980-06-01), Gundy
Longyear Advertisement, 1957.

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