Fixed-cutter drill bit assembly and method

Boring or penetrating the earth – Processes

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

175393, 175429, 175431, E21B 1046

Patent

active

055952526

ABSTRACT:
A drill bit assembly comprising a plurality of cutter units, with each cutter unit comprising a circumferentially forward, relatively blunt positioning cutter, followed by a fixed cutter having a relatively sharp cutting edge, with the cutting edge of the following cutter being positioned a predetermined distance below an operating position of the positioning cutter. Thus, the cutting depth of the following cutter is controlled by the positioning cutter locating the drill bit assembly against the hole end wall from which material is being cut. Also, additional fixed cutters can be provided in circumferential alignment in said cutting units, and liquid jet cutters can be used in combination with said cutting units.

REFERENCES:
patent: 3111179 (1963-11-01), Albers
patent: 3235018 (1966-02-01), Troeppl
patent: 3419220 (1968-12-01), Goodwin et al.
patent: 3542142 (1970-11-01), Hasiba
patent: 3838742 (1974-10-01), Juvkam-Wold
patent: 4073354 (1978-02-01), Rowley et al.
patent: 4174759 (1979-11-01), Arbuckle
patent: 4253533 (1981-03-01), Baker, III
patent: 4262757 (1981-04-01), Johnson, Jr.
patent: 4351401 (1982-09-01), Fielder
patent: 4391339 (1983-07-01), Johnson, Jr.
patent: 4397361 (1983-08-01), Langford, Jr.
patent: 4543427 (1985-08-01), Wang et al.
patent: 4558753 (1985-12-01), Barr
patent: 4718505 (1988-01-01), Fuller
patent: 4790394 (1988-12-01), Dickinson et al.
patent: 4823892 (1989-04-01), Fuller
patent: 4889017 (1989-12-01), Fuller et al.
patent: 4981184 (1991-01-01), Knowlton et al.
patent: 4991670 (1991-02-01), Fuller
patent: 5004056 (1991-04-01), Goikhman et al.
patent: 5027912 (1991-07-01), Juergens
patent: 5186268 (1993-02-01), Clegg
patent: 5238075 (1993-08-01), Keith et al.
patent: 5265685 (1993-11-01), Keith et al.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Fixed-cutter drill bit assembly and method does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Fixed-cutter drill bit assembly and method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fixed-cutter drill bit assembly and method will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-2319452

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.