LandOfFree - US Patents - Listing for Boring or penetrating the earth,Bit or bit element

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

Asymmetric insert for inner row of an earth boring cutter

Boring or penetrating the earth – Bit or bit element – Specific or diverse material

Asymmetrical PDC cutter

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

Asymmetrical rotary cone bit

Boring or penetrating the earth – Bit or bit element – Impact or percussion type

Attachment geometry for non-planar drill inserts

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

Attachment means for drilling equipment

Boring or penetrating the earth – Bit or bit element – Specific or diverse material

Attack tool insert with polycrystalline diamond layer

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

Auger bit

Boring or penetrating the earth – Bit or bit element – Plural separable cutter elements

Auger bit

Boring or penetrating the earth – Bit or bit element – With helical-conveying portion

Auger construction

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

Auger cutter head

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

Auger drilling head

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

Auger head assembly and method of drilling hard earth formations

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

Auger head assembly and method of drilling hard earth formations

Boring or penetrating the earth – Bit or bit element – With helical-conveying portion

Auger planter

Boring or penetrating the earth – Bit or bit element – With helical-conveying portion

Auger planter

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

Auto-coupling tool for drill-pipes

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

Automatic wear compensating seal device

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

Axial-vortex jet drilling system and method

Boring or penetrating the earth – Bit or bit element – Specific or diverse material

Axisymmetric cutting element