Boring or penetrating the earth – Bit or bit element – Rolling cutter bit or rolling cutter bit element
Patent
1974-09-16
1976-03-23
Brown, David H.
Boring or penetrating the earth
Bit or bit element
Rolling cutter bit or rolling cutter bit element
175334, 175337, 175345, 175376, 175378, E21B 924
Patent
active
039454479
ABSTRACT:
In boring apparatus of the type having cutters mounted for rotation about respective cutter axes in a frame which is in turn rotatable about a frame axis, each cutter having a body carrying teeth which in operation sweep a surface which is oblique to the axis of advance of the apparatus, that improvement wherein each cutter has selected tooth regions, preferably of alternating high and low tooth densities, spaced along the respective cutter axis, the tooth regions of the cutters are arranged in an ordered cycle progressing along the frame axis, and regions adjacent each other in the cycle are on different cutters and overlap each other along the frame axis.
REFERENCES:
patent: 930758 (1909-08-01), Hughes
patent: 1302058 (1919-04-01), Layne
patent: 2029770 (1936-02-01), Grant
patent: 2093603 (1937-09-01), Ellingsen
patent: 2122863 (1938-07-01), Howard et al.
patent: 2126145 (1938-08-01), Smith
patent: 2499630 (1950-03-01), Clark
patent: 2915291 (1959-12-01), Gulfelt
patent: 3018835 (1962-01-01), Kucera
patent: 3306379 (1967-02-01), Kloesel et al.
patent: 3306381 (1967-02-01), Garrett et al.
patent: 3419093 (1968-12-01), Lichte et al.
patent: 3726350 (1973-04-01), Pessier
patent: 3805901 (1974-04-01), Coski
patent: 3820613 (1974-06-01), White
patent: R27781 (1973-10-01), Garrett
Brown David H.
Rapidex, Inc.
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