Patent ID: 7270198

Claim:
A drilling tool assembly comprising: a steering system, a drilling motor, an orienter and, a drill bit, wherein said drilling motor includes a motor output shaft which provides output power to said drill bit; wherein said orienter includes a first non-rotatable housing and a second rotable housing; wherein said first non-rotatable housing surrounds a clutch mechanism and a speed reduction system; wherein said clutch mechanism transmits rotary power from said motor output shaft to said speed reduction system, said speed reduction system located between said clutch mechanism and said second rotatable housing; wherein said second rotatable housing includes a flexible coupling connecting said motor output shaft to an orienter drive shaft which is connected to said drill bit; wherein said second rotatable housing further includes a bent portion surrounding said orienter drive shaft; whereby when said clutch mechanism is actuated, rotary power from said motor output shaft is transmitted through said clutch mechanism, through said speed reduction system to rotate said second rotatable housing, while said orienter drive shaft continues to rotate said drill bit.