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

Earth-boring bit with wear-resistant material

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

Earth-boring drill bit with enlarged junk slots

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

Earth-boring rotary drill bits including bit bodies having...

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

Earth-boring tools having features for affecting cuttings flow

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

Earth-burning bit having an improved hard-faced tooth structure

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

Eccentric rotary bit

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

Elastomeric seal assembly having auxiliary annular seal...

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

Enhanced circulation drill bit

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

Enhanced circulation drill bit

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

Enhanced cross-flow with two jet drilling

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

Excavation bit for a drilling apparatus

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

Expandable raise bit

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

Extended drill bit nozzle having extended retainer

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

Extended drill bit nozzle having side discharge ports

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

Extended nozzle and bit stabilizer and method of producing