Non-metallic body cutting tools

Details Non-metallic body cutting tools Non-metallic body cutting tools

1997-06-17

1999-02-02

Howell, Daniel W.

Cutting by use of rotating axially moving tool

Processes

Bit detachable

408144, 408204, 408230, 451542, B23B 3500

Patent

active

058655719

ABSTRACT:
A drill bit is provided with a cylindrical body portion fabricated from a plastic material. The body portion is fastened in concentric, end to end relation to a cylindrical cutter fabricated from a metallic material and having an array of cutting elements disposed thereon. The body portion and cutter are preferably tubular, wherein the cutting elements are disposed in an annular array, to facilitate core or crown drilling operations. The wall thickness of the tubular body portion may be increased relative that of the cutter to compensate for wear during drilling.

REFERENCES:
patent: 3382743 (1968-05-01), Trevathan
patent: 4393590 (1983-07-01), Pantzar
patent: 4821465 (1989-04-01), Tomlinson et al.
patent: 5069584 (1991-12-01), Obermeier et al.
patent: 5125774 (1992-06-01), Catenacci
patent: 5387059 (1995-02-01), Borzemsky
patent: 5408983 (1995-04-01), Sawluk
patent: 5411010 (1995-05-01), Mummenhoff
patent: 5454752 (1995-10-01), Sexton et al.
patent: 5611649 (1997-03-01), Matthias
patent: 5649796 (1997-07-01), Durney
"Laminated Diamond Blade Reduces Dry Sawing Noise" IPRI Sep./Oct. 1987, p. 19, Auther unknown.
"Coring Unconsolidated Sands In The Gulf Of Mexico" Drilling, Sep./Oct. 1988, pp. 33/35. by Jamie Wilcox.
"PTA Proves Its Worth In High-Volume Hardfacing Jobs" Welding Journal, Feb. 1996, pp. 34/40 by D. Raghu and R. Webber.

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