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

Drill bit having an improved seal and lubrication method...

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

Drill bit having angled nozzles

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

Drill bit having angled nozzles for improved bit and well bore c

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

Drill bit having angled nozzles for improved bit and well bore c

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

Drill bit having canted seal

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

Drill bit having dual split bushings for cutter support and rete

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

Drill bit having hollow cylindrical body and a plurality of PCD

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

Drill bit having improved hydraulic action for directing drillin

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

Drill bit having offset roller cutters and improved nozzles

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

Drill bit having offset roller cutters and improved nozzles

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

Drill bit having offset roller cutters and improved nozzles

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

Drill bit having replaceable nozzles directing drilling fluid at

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

Drill bit including non-plugging nozzle and method for removing

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

Drill bit lubrication apparatus and method

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

Drill bit nozzle assembly and insert assembly including a...

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

Drill bit wear resistant surface for elastomeric seal

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

Drill bit with canted gage insert

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

Drill bit with covered ring nozzle retainer

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

Drill bit with cutter element having multifaceted, slanted...