LandOfFree - US Patents - Listing for Boring or penetrating the earth

Boring or penetrating the earth – Bit or bit element – Rolling cutter bit or rolling cutter bit element

Taper lock removable stem for raise bit

Boring or penetrating the earth – With below-ground tool drive prime mover

Tapered friction bearing assembly

Boring or penetrating the earth – Automatic control – Of advance or applied tool weight

Targetable drill with pressure telemetering of drill parameters

Boring or penetrating the earth – Processes – Boring with specific fluid

Technique for damping oscillations in a drill string

Boring or penetrating the earth – Processes – Boring with specific fluid

Technique for damping oscillations in a drill string

Boring or penetrating the earth – Boring with explosion in inaccessible hole – Independent firing of plural charges

Technique for disarming and arming electrically fireable explosi

Boring or penetrating the earth – With tool shaft detail – Shaft carried guide or protector

Technique for drilling straight bore holes in the earth

Boring or penetrating the earth – Automatic control – Of boring means including a below-ground drive prime mover

Technique for providing an underground tunnel utilizing a powere

Boring or penetrating the earth – Automatic control – Of boring means including a below-ground drive prime mover

Technique for providing an underground tunnel utilizing a powere

Boring or penetrating the earth – Automatic control – Of boring means including a below-ground drive prime mover

Technique for providing an underground tunnel utilizing a powere

Boring or penetrating the earth – Processes – Boring curved or redirected bores

Technique for steering a downhole hammer

Boring or penetrating the earth – Automatic control – Of boring means including a below-ground drive prime mover

Technique for steering and monitoring the orientation of a power

Boring or penetrating the earth – With signaling – indicating – testing or measuring

Telemetry method for cable-drilled boreholes and method for carr

Boring or penetrating the earth – With tool shaft detail

Telescopable boring rod mechanism

Boring or penetrating the earth – With tool shaft detail – Axially telescoping shaft section

Telescopic bar of drill rig

Boring or penetrating the earth – Boring without earth removal – Drive point detached from shaft to form cased bore or with...

Telescopic drilling method

Boring or penetrating the earth – Processes

Telescopic kelly bar apparatus and method

Boring or penetrating the earth – With tool shaft detail – Axially telescoping shaft section

Telescopically extensible drill

Boring or penetrating the earth – With tool shaft detail – Axially telescoping shaft section

Telescoping casing joint for landing a casting string in a well