Rotary drilling head assembly

Details Rotary drilling head assembly Rotary drilling head assembly

E - Fixed Constructions

21

B

255/23

E21B 3/00 (2006.01) E21B 3/02 (2006.01) E21B 3/04 (2006.01) E21B 33/08 (2006.01) F16D 3/06 (2006.01) F16J 15/32 (2006.01)

Patent

CA 1046496

Abstract of the Disclosure A rotary drilling head assembly having a main body through which an axial bore is formed for sealingly receiving, in an axially rotatable and longitudinally slidable manner, a driving member therethrough, thereby enabling the driving member to be moved longitudinally respective to the head while it is being axially rotated by the turntable. An outflow passageway conducts fluid flow away from the head, while a second seal means controls fluid flow between the relative rotating parts of the assembly. -1a-

238538

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