Drill steel

Details Drill steel Drill steel

1985-09-26

1988-06-07

Novosad, Stephen J.

Boring or penetrating the earth

With tool shaft detail

175323, 408226, E21B 1000, B23B 3104

Patent

active

047490519

ABSTRACT:
A drill steel for percussion drilling has four longitudinally extending grooves for removal of cuttings. The grooves are shaped such that, in comparison with a hexagonal drill steel, there is obtained an enlarged space for cuttings and a less consumption of material with maintenance of the same resistance to bending.

REFERENCES:
patent: Re16061 (1925-05-01), Thurston
patent: 1666898 (1928-04-01), Hanson
patent: 2029447 (1936-02-01), Swain
patent: 2177300 (1939-10-01), Kellegrew
patent: 2217202 (1940-10-01), Gelpcke
patent: 2479698 (1949-08-01), Paguin
patent: 2733943 (1956-02-01), Nater
patent: 2895355 (1959-07-01), Kleine

Affiliated with

Also associated with

Rating

Drill steel does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Drill steel, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Drill steel will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-839270