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

Boring or penetrating the earth – Bit or bit element – With bit guide or bore wall compacting device

Earth boring apparatus and method offering improved gage...

Boring or penetrating the earth – Boring without earth removal

Earth boring apparatus and method with control valve

Boring or penetrating the earth – Boring by directly applying heat to fluidize or comminute – Electrically produced heat

Earth boring apparatus employing high powered laser

Boring or penetrating the earth – Processes – Sampling of earth formations

Earth boring apparatus for geological drilling and coring

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

Earth boring assembly with drag pipe

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

Earth boring auger

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

Earth boring auger

Boring or penetrating the earth – With means movable relative to tool below ground to stop... – With undisturbed core receiver

Earth boring auger

Boring or penetrating the earth – Bit or bit element – Bit with leading portion forming smaller diameter initial bore

Earth boring bit

Boring or penetrating the earth – With relatively movable parts to facilitate cleaning without...

Earth boring bit

Boring or penetrating the earth – With relatively movable parts to facilitate cleaning without...

Earth boring bit

Boring or penetrating the earth – With storage means for bit lubricant carried by bit or shaft – With fluid pressure-actuated feed means

Earth boring bit and lubricator compensation therefor

Boring or penetrating the earth – With storage means for bit lubricant carried by bit or shaft – With fluid pressure-actuated feed means

Earth boring bit and lubricator/compensator therefor

Boring or penetrating the earth – Bit or bit element – Magnetized or with magnet

Earth boring bit for soft to hard formations

Boring or penetrating the earth – Bit or bit element – With fluid conduit lining or element

Earth boring bit having a replaceable, threaded nozzle with wren

Boring or penetrating the earth – With storage means for bit lubricant carried by bit or shaft

Earth boring bit packed lubrication system

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

Earth boring bit with air system access

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

Earth boring bit with bearing sleeve

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

Earth boring bit with convergent cutter bearing