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

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

Air jet earth-boring bit with non-offset cutters

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

Alternating inclinations of compacts for drill bit

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

Anti-balling drill bit

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

Anti-balling earth boring bit

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

Anti-mud packing seal gland

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

Anti-tracking earth boring bit with selected varied pitch...

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

Apparatus and method for a roller bit using collimated jets...

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

Arcuate-shaped inserts for drill bits

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

Arrangement for reducing seal damage between rotatable and stati

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

Asymmetric gage insert for an earth boring apparatus

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 – Rolling cutter bit or rolling cutter bit element

Asymmetrical rotary cone bit

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 – 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 – 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 – Rolling cutter bit or rolling cutter bit element

Bar trimmers on disk bit

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

Barrier coated granules for improved hardfacing material