E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 10/60 (2006.01) E21B 7/06 (2006.01) E21B 7/18 (2006.01) E21B 47/01 (2006.01) E21B 47/022 (2006.01) E21B 47/12 (2006.01)
Patent
CA 2060091
17 Controllable drill head. Controllable drill head containing an elongated body (1) of which one end is meant to be attached to a bore pipe (2) and a spout element (5) which has been mounted in a turnable manner on the other, foremost end of the body (1), in and opposite an opening (4) in this body (1), characterized in that it contains an elongated, elastic, bendable element (6) which at one end carries the spout element (5) and which has been mounted in the body (1) in such a manner that when being in rest position it stretches out in the longitudinal direction of the body (1), but which is elastically bendable in the cross direction of the body (1) so as to alter the direction of the spout element (5) through bending, means (3) to stop the foremost end of the bendable element (6) with the spout element (5) in the forward direction without the element (6) bending through and to keep the spout element (5) from changing direction, and means (7) to exert a forward pressure on a part of the bendable element (6) which is situated further away from the foremost end of the body (1) than the foremost end of it which is stopped by said body (1) so as to provoke the bending through of the bendable element (6). Fig. 1.
Robic
Smet Marc J. M.
LandOfFree
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