POWER DRIVEN EARTH BORING DRILL

Brand	Owner (click to sort)	Address	Description
ENDURANCE	SMITH INTERNATIONAL, INC.	1310 Rankin Road Houston TX 77073	Power driven earth boring drill bit;
MARAUDER	SMITH INTERNATIONAL, INC.	1310 Rankin Road Houston TX 77073	Power driven earth boring drill bits for drilling earthen formations with oil and gas rigs;
TELEMAST	SCHRAMM, INC.	800 E. Virginia Ave. West Chester PA 19380	power driven earth-boring drill;
XRD	SMITH INTERNATIONAL, INC.	1310 Rankin Road Houston TX 77073	Power driven earth boring drill bit;
	Where the owner name is not linked, that owner no longer owns the brand

Technical Examples

In a method and device for boring or drilling, in particular percussion drilling or rotary percussion drilling, holes in soil or rock, wherein a borehole is formed by a percussive and/or rotary movement carried out by a drill bit (2) mounted on a drill rod assembly (3) and a jacket tube (6) coupled with the drill bit (2) is introduced into the borehole, it is provided that the jacket tube (6) is received in a socket (5) provided on the end facing away from the drill bit working surface, of an envelope tube (4) coupled with the drill bit (2), and that the jacket tube (6) is subjected to a percussive and/or compressive stress on its end facing away from the drill bit, whereby directionally precise boring or drilling is rendered feasible.